Title:
Chair Apparatus
Kind Code:
A1


Abstract:
A portable chair includes a structure with a plurality of beam extensions that each have a first end, a second end, and a mid portion. The beam extensions form a paired “X” type crossing, wherein the beams are pivotally connected. Also included is a flexible panel having a periphery attached therebetween a pair of first ends, wherein the pair of first ends and panel are both adjacent to a surface. Further included is a flexible seat compartment having an outer margin attached therebetween a pair of the second ends. The chair has an open state with the panel drawn substantially taut setting a distance between the first ends, with the panel forming an increased area of contact with the surface, while the seat compartment has slack between the second ends. The chair also having a stowed state by beam extensions brought together from the panel and seat compartment collapsing.



Inventors:
Brunner, Paul Edward (Lakewood, CO, US)
Application Number:
12/348268
Publication Date:
07/02/2009
Filing Date:
01/02/2009
Primary Class:
International Classes:
A47D1/02
View Patent Images:
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Primary Examiner:
ALLRED, DAVID E
Attorney, Agent or Firm:
JACKSON ESQUIRE (Littleton, CO, US)
Claims:
1. A portable chair apparatus that is adjacent to a surface, said apparatus comprising: (a) a support structure that includes a plurality of beam extensions, each said beam extension having a longitudinal axis with a beam first end portion, a beam second end portion, and a beam mid portion positioned therebetween, said plurality of beam extensions form a paired “X” type crossing, wherein said beam extensions are pivotally connected to one another at a crossover point adjacent to each said mid portion in said “X” type crossing; (b) a flexible panel having a periphery portion that is attached therebetween a pair of said first end portions whose said beam extensions form said paired “X” type crossing, wherein said pair of first end portions and said flexible panel are both adjacent to the surface; and (c) a flexible seat compartment element having an outer margin that is attached therebetween a pair of said second end portions whose said beam extensions form said paired “X” type crossing, wherein operationally said portable chair apparatus has an open operational state with said flexible panel being drawn substantially taught thereby setting a distance between said first end portions, with said flexible panel forming an increased area contact with the surface, while said flexible seat compartment element has slack between said second end portions, said portable chair apparatus also having a stowed state wherein said plurality of beam extensions are brought together with each said longitudinal axis becoming more parallel by virtue of said flexible panel and said flexible seat compartment element collapsing.

2. A portable chair apparatus according to claim 1 further comprising a plurality of paired “X” type crossing sets of said beam extensions wherein said first end portions are all attached to said periphery and said second end portions are all attached to said outer margin.

3. A portable chair apparatus according to claim 2 wherein said first end portions are pivotally connected to one another as between each said paired “X” type crossing sets.

4. A portable chair apparatus according to claim 2 wherein said second end portions are pivotally connected to one another as between each said paired “X” type crossing sets.

5. A portable chair apparatus according to claim 2 wherein said first end portions are pivotally connected to one another as between each said paired “X” type crossing sets and said second end portions are pivotally connected to one another as between each said paired “X” type crossing sets.

6. A portable chair apparatus according to claim 1 wherein said flexible panel is constructed of a laminate including a sheet material with a broad flat reinforcing strap that is substantially taut as between said first end portions when said portable chair apparatus is in said open state.

7. A portable chair apparatus according to claim 2 wherein said flexible panel is constructed of a laminate including a sheet material with a plurality of broad flat reinforcing straps that are all substantially taut as between opposing said first end portions when said portable chair apparatus is in said open state.

8. A portable chair apparatus according to claim 1 further comprising a flexible accessories tray having an outer edge portion that is attached therebetween a pair of said mid portions.

9. A portable chair apparatus according to claim 8 wherein said flexible accessories tray further includes a drawstring positioned adjacent to said outer edge portion that is operational to further enhance a concave shape of said flexible accessories tray opposite of the surface for a purpose of helping to retain accessories.

10. A portable chair apparatus that is adjacent to a surface, said apparatus comprising: (a) a support structure that includes a plurality of beam extensions, each said beam extension having a longitudinal axis with a beam first end portion, a beam second end portion, and a beam mid portion positioned therebetween, said plurality of beam extensions form a plurality of paired “X” type crossing sets, wherein said beam extensions are pivotally connected to one another at a crossover point adjacent to each said mid portion in said “X” type crossing, furthermore each of said first end portions are pivotally connected to one another as between each said paired “X” type crossing sets and each of said second end portions are pivotally connected to one another as between each said paired “X” type crossing sets; (b) a flexible panel having a periphery portion, said panel constructed of a laminate including a sheet material with a plurality of adjacent broad flat reinforcing straps that are each taut as between each said first end portions that are substantially oppositely disposed from one another thus setting a distance as between an oppositely disposed said first end portions when said portable chair apparatus is in said open state wherein said straps are attached to said first end portions adjacent to said periphery, wherein said plurality of first end portions and said flexible panel are both adjacent to the surface, said panel forming a substantially rigid web area as between said plurality of first end portions facing the surface for enhanced open state chair stability with a soft state of the surface; and (c) a flexible seat compartment element having an outer margin that is attached therebetween to said plurality of second end portions to said margin, wherein operationally said portable chair apparatus has an open operational state with said flexible seat compartment element having slack between said second end portions, said portable chair apparatus also having a stowed state wherein said plurality of beam extensions are brought together with each said longitudinal axis becoming more parallel by virtue of said flexible panel and said flexible seat compartment element collapsing.

11. A portable chair apparatus according to claim 10 further comprising a flexible accessories tray having an outer edge portion that is attached therebetween a plurality of said mid portions.

12. A portable chair apparatus according to claim 11 wherein said flexible accessories tray further includes a drawstring positioned adjacent to said outer edge portion that is operational to further enhance a concave shape of said flexible accessories tray opposite of the surface for a purpose of helping to retain accessories.

Description:

RELATED PATENT APPLICATION

This application claims priority from U.S. provisional patent application Ser. No. 61/018,518 filed Jan. 2, 2008 by Paul Brunner.

TECHNICAL FIELD

The present invention relates generally to an apparatus, which is employed to provide support for a user to sit down. More specifically, the present invention relates to the field of portable seating apparatus for controlling the support and stability of when the seating apparatus is placed upon a soft surface such as soggy soil, sand, snow, and the like. Furthermore, the support and stability of the seating apparatus is improved by the present invention when any one or more of its plurality of support legs is disposed upon a softer surface portion than the other support legs that can potentially lead to the seating apparatus overturning, wherein this can be especially acerbated when the user individual who is seated in the chair may lean backward, forward, or to either side thereby causing uneven force loading on each support leg as against the soft surface further causing a single chair leg for example to embed or penetrate into the soft surface potentially causing the chair to topple.

BACKGROUND OF INVENTION

Portable seating apparatus are well known and popular being used for sporting events such as football games, soccer games, golf, tennis, and the like. Other uses include sports activities like hunting, fishing, camping, and other similar activities. The primary aspects of a portable seating apparatus are that they are light in weight to be easily transportable and easily expanded into an open state and stowed into a closed or transport state, which at the same time having a fairly rigid framework structure while the seating apparatus is in the open state (for seating by the user) for stability and comfort of the user. Although there are numerous configurations for effecting the structural transition from and to the open and closed states known in the prior art for portable seating apparatus, currently the technology and the market seem to favor the scissors style structure that is pivotally connected to the midpoint of the support legs wherein operationally the support legs move inward and outward laterally while the support legs remain substantially parallel during this inward and outward movement. Further, the support legs are fully extended outwardly to form the open state of the portable seating apparatus having typically a flexible panel that conforms to the seat bottom and seat back portion when the support legs are fully extended outwardly. In putting the portable seating apparatus into the closed or stowed state the support legs are moved toward one another while the flexible seat bottom and back panel fold to allow the support legs to come together putting the portable seating apparatus into its stowed state.

Given the above popular scissors type folding structure for portable seating apparatus description is also utilized in the present invention, the focus of the present invention of the portable seating apparatus is upon the interface of the support legs with the surface that is of varying levels of softness. In looking at the prior art in the area of novel support leg interfaces with a surface support enhancement of portable seating apparatus, starting with the older design having a rigid seat bottom frame and back frame that are pivotally connected to one another (having a single plane of movement to collapse the portable chair) that collapse toward being adjacent to one another to be in the closed or stowed state is shown in U.S. Pat. No. 4,915,335 to Miles, wherein disclosed is a lawn chair stabilizer that has detachable tabs removably engaged to the support leg frame structure, wherein the tabs are operational to somewhat increase the surface area contact size and enhance lateral or side to side stability only. However, noting that Miles requires that the support legs be rigid and at least two of the support legs to have a fixed relationship to each other, see FIGS. 9 through 15. Furthermore, Miles does not enhance the portable chair stability if the user individual leans either forward of backward, again see FIGS. 9 through 15. Continuing for a similarly situated portable chair that folds to a closed or stowed state much like Miles, is in U.S. Pat. No. 5,087,095 to McFate wherein disclosed is a recreational chair for use in a beach environment or more specifically for use on a surface of sand. The portable chair in McFate is accompanied by certain attachments that are useful for sunning on a sandy surface, wherein these attachments are also provided for allowing easy transport of the chair upon the back of the user; see the abstract and FIGS. 2 and 3 in particular. A plurality of pockets are included in McFate that include a closable pouch located along the bottom of the chair for storing a length of foldable material or tarp suitable for placing upon a beach sandy surface for the purpose of lying thereon. The tarp in McFate may comprise any suitable material such as lightweight canvas or the like that is easily foldable into the pouch when not in use, with the tarp having a length of approximately six to seven feet being utilized in order to accommodate either a male or female body when lying full length thereon, see column 3, lines 3-13. McFate, also anchors the support legs in a tent pole fashion by driving a tent type stake that flexibly connects to the support leg, while this arrangement provides for preventing the chair from blowing away, it does not protect against the support leg from sinking into the sand surface, see FIG. 4 in particular.

Further in the portable chair apparatus prior art, in what appears to be a combination of Miles and McFate, however, leaning more towards Miles is disclosed in U.S. Pat. No. 5,513,900 to Iglesias that includes a planar chair stabilizing device for rotatable attachment to the ground level, pivotally horizontally attaching to an extending leg member portion of a chair. The device in Iglesias includes a stabilizing base and a gripping member fixed to the base having a slit in the portion of the gripping member not fixed to the base provides access to a central opening sized and shaped to receive the horizontally extending leg member portion, however allowing the chair to have free movement and not resisting forward or backward leaning, being the same drawback as Miles. The gripping member in Iglesias is also sufficiently firm to grip and hold the leg member portion within the central opening and to hold the base parallel to the leg member portion during use of the chair, wherein the base, on installation of the device, extends sufficiently outward to the side of the chair to prevent tipping of the chair to the side during use, see column 1, lines 52-67. The gripping member in Iglesias is sufficiently flexible to permit installation of the device by inserting the leg member portion through the slit into the central opening, see FIG. 5, additionally as in Miles, Iglesias requires a fixed rigid relationship between at least two support legs thus further limiting the folding structure options available to place the chair into the closed or stowed state.

Moving forward in looking at the prior art that is somewhat similar to McFate in function by providing a portable chair holddown as against the wind, in U.S. Pat. No. 6,290,197 to Newton, disclosed is a portable hold down device having weight mass which is connectable to a portable object, such as a portable folding chair, for maintaining the portable chair in a substantially stable condition so that the wind will not move and/or blow the portable chair about, see FIG. 1 for attachment to a current scissors folding type of portable chair with continuously substantially parallel support legs and FIG. 6 for attachment to a previously popular rigid frame pivoting seat bottom and rigid frame back folding type portable chair structure. The portable hold down device in Newton includes a portable hold down assembly having a weight sufficient to maintain the portable object in substantially stable condition when the hold down assembly is connected to the portable object, see Column 1, lines 43-52. The first connector assembly in Newton is removably connectable to the portable chair frame whereby when the first connector assembly is connected the portable chair support leg structure, wherein the portable chair is maintained in a substantially stable condition as against wind and the like. A second connector assembly in Newton is supported by at least one of the hold down assemblies and the first connector assembly so as to be extendable outwardly therefrom with the second connector assembly is removably connectable to at least a portion of the portable chair having a different orientation than the portion of the portable object to which the first connector assembly is removably connectable, see FIG. 1 as previously described, with the attendant difficulty of attaching the weight. Thus as in McFate, Newton does not prevent the support legs of the portable chair apparatus from sinking into a soft surface, further, even though Miles and Iglesias do provide some increased surface area at the contact of the support leg on the surface, it is not much of an increase in surface area and does not provide for resistance against forward or backward movement of the individual user.

As an example of the previously discussed current scissors type of portable chair apparatus, wherein the support legs remain substantially parallel in going from the open state wherein the individual user can sit in the portable chair to the closed or stowed (transport) state and vice versa, see U.S. Pat. No. 6,505,885 to Tang that basically discloses the structural framework of the scissors mechanism, see in particular FIGS. 1 through 4 in going from the open state to the closed state. Note that in Tang, there are four small in area support leg rests that are adjacent to the surface, thus providing little support for the chair and individual user when the surface is a soft material, however, the focus in Tang is upon the scissors folding mechanism and not the surface contact supports. Also for a similar invention to Tang, see in U.S. Pat. No. 6,637,811 to Zheng, for a simpler version of Tang, Zheng however, using the scissors mechanism in a single axis of movement (laterally) and pivoting the support legs perpendicular to the lateral movement for a simpler design, while accomplishing the same function as Tang, albeit for a smaller portable chair.

What is needed is a portable chair apparatus that is adaptable to being functional upon a soft surface matter material, such as marsh type wet soil, snow, sand, and the like that can allow the individual user to sit comfortably and even potentially lean either backward or forward plus laterally side to side without fear of one chair leg sinking appreciably more than the other chair legs thereby upsetting the user who has to get out of the chair, remove the sunken leg from the surface matter and attempt to move the chair to another location with a harder more stable surface.

SUMMARY OF INVENTION

Broadly, the present invention is a portable chair apparatus that is adjacent to a surface, with the apparatus including a support structure that has a plurality of beam extensions, each beam extension having a longitudinal axis with a beam first end portion, a beam second end portion, and a beam mid portion positioned therebetween. The plurality of beam extensions form a paired “X” type crossing, wherein the beam extensions are pivotally connected to one another at a crossover point adjacent to each mid portion in the “X” type crossing. Further included in the portable chair apparatus is a flexible panel having a periphery portion that is attached therebetween a pair of the first end portions whose beam extensions form the paired “X” type crossing, wherein the pair of first end portions and the flexible panel are both adjacent to the surface. Also included in the portable chair apparatus is a flexible seat compartment element having an outer margin that is attached therebetween a pair of the second end portions whose beam extensions form the paired “X” type crossing. Operationally the portable chair apparatus has an open operational state with the flexible panel being drawn substantially taught thereby setting a distance between the first end portions, with the flexible panel forming an increased area of contact with the surface, while the flexible seat compartment element has slack between the second end portions while the portable chair apparatus is in the open state. The portable chair apparatus also having a stowed or closed state wherein the plurality of beam extensions are brought together with each longitudinal axis becoming more parallel by virtue of the flexible panel and the flexible seat compartment element collapsing.

These and other objects of the present invention will become more readily appreciated and understood from a consideration of the following detailed description of the exemplary embodiments of the present invention when taken together with the accompanying drawings, in which;

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 shows a perspective view of the portable chair apparatus in the open state with the flexible panel forming a substantially rigid web area that is adjacent to the surface;

FIG. 2 shows a perspective view of the portable chair apparatus in the partially stowed state, being halfway between the open state and the closed state with the flexible panel and the flexible seat compartment element partially collapsing;

FIG. 3 shows a perspective view of the portable chair apparatus in the closed or stowed state with the flexible panel and the flexible seat compartment element collapsing;

FIG. 4 shows a surface side view of the portable chair apparatus in the open state wherein predominately shown is the increased area contact of the flexible panel and the relationship of the beam extension pivotally connected first end portions;

FIG. 5 shows a perspective view of the portable chair apparatus in the open state with the flexible panel straps and sheet forming a substantially rigid web area that is adjacent to the surface;

FIG. 6 shows a perspective use view of a prior art version of the portable chair apparatus with the user sinking into the soft surface to their right side by virtue of the user's right side prior art chair legs embedding into the soft surface;

FIG. 7 shows a perspective use view of the prior art version of the portable chair apparatus with the user sinking into the soft surface to their left side by virtue of the user's left side prior art chair legs embedding into the soft surface;

FIG. 8 shows a perspective use view of the prior art version of the portable chair apparatus with the user sinking into the soft surface to their back side by virtue of the user's back side prior art chair legs embedding into the soft surface;

FIG. 9 shows a perspective use view of the prior art version of the portable chair apparatus with the user sinking into the soft surface to their front side by virtue of the user's left front prior art chair legs embedding into the soft surface; and

FIG. 10 is a perspective use view of the portable chair apparatus in the open state with the flexible panel forming a substantially rigid web area that is adjacent to the surface having a slight concave shape from contact with and downward force upon the soft surface from the combined weight of the user and the portable chair apparatus.

REFERENCE NUMBERS IN DRAWINGS

  • 30 Portable Chair Apparatus
  • 35 Support structure
  • 40 Beam extensions
  • 45 Longitudinal axis
  • 50 First end portion of beam extension 40
  • 55 Mid portion of beam extension 40
  • 60 Second end portion of beam extension 40
  • 65 Paired “X” type crossing of the beam extensions 40
  • 70 Pivotally connected beam extensions 40
  • 75 Crossover point of the beam extensions 40
  • 80 Pivotal connection of the first end portions 50
  • 85 Pivotal connection of the second end portions 60
  • 90 Flexible panel
  • 95 Periphery portion of the flexible panel 90
  • 100 Substantially taut condition of the flexible panel 90
  • 105 Setting distance as between the first end portions 50
  • 110 Increased area contact of the flexible panel 90 with the surface 230
  • 115 Laminate construction of the flexible panel 90
  • 120 Sheet material of the flexible panel 90
  • 125 Broad flat reinforcing strap of the flexible panel 90
  • 130 Substantially taut condition of the broad flat reinforcing strap 125
  • 135 Oppositely disposed first end portions 50 of the beam extensions 40 for the attachment of the strap 125
  • 140 Attachment therebetween of the flexible panel 90 and the first end portions 50
  • 145 Substantially rigid web area of the flexible panel 90
  • 150 Flexible seat compartment element
  • 155 Outer margin of the flexible seat compartment element 150
  • 156 Attachment of the outer margin 155 of the flexible seat compartment element 150
  • 160 Slack condition of the flexible seat compartment element 150
  • 165 Bringing together the plurality of beam extensions 40
  • 170 Longitudinal axes 45 of the beam extension 40 becoming more parallel
  • 175 Collapsing of the flexible panel 90 and the flexible seat compartment element 150
  • 180 Flexible accessories tray
  • 190 Outer edge portion of the flexible accessories tray 180
  • 200 Attachment of the outer edge portion 190 of the flexible accessories tray 180
  • 205 Drawstring of the flexible accessories tray 180
  • 210 Concave shape of the flexible accessories tray 180
  • 215 Accessories disposed within the flexible accessories tray 180
  • 220 Open operational state of the portable chair apparatus 30
  • 225 Closed or stowed operational state of the portable chair apparatus 30
  • 230 Surface
  • 235 Adjacent to the surface 230
  • 240 Soft state of the surface 230
  • 245 User
  • 249 Prior art portable chair apparatus
  • 250 User 245 and prior art portable chair apparatus 249 sinking into the soft surface 240

DETAILED DESCRIPTION

With initial reference to FIG. 1 shown is a perspective view of the portable chair apparatus 30 in the open state 220 with the flexible panel 90 forming a substantially rigid web area 145 that is adjacent to the surface 230 and FIG. 2 shows a perspective view of the portable chair apparatus 30 in the partially stowed state, being halfway between the open state 220 and the closed state 225 with the flexible panel 90 and the flexible seat compartment element 150 partially collapsing 175. Continuing, FIG. 3 shows a perspective view of the portable chair apparatus 30 in the closed or stowed state 225 with the flexible panel 90 and the flexible seat compartment element 150 collapsing 175 and FIG. 4 shows a surface side view of the portable chair apparatus 30 in the open state 220 wherein predominately shown is the increased area contact 110 of the flexible panel 90 and the relationship of the beam extension 40 pivotally connected 80 first end portions 50.

Next, FIG. 5 shows a perspective view of the portable chair apparatus 30 in the open state 220 with the flexible panel straps 125 and sheet 120 forming a substantially rigid web area 145 that is adjacent to the surface 230 and FIG. 6 shows a perspective use view of a prior art version of the portable chair apparatus 249 with the user 245 sinking into the soft surface 240 to their right side by virtue of the user's 245 right side prior art chair 249 legs embedding into the soft surface 240. Further, FIG. 7 shows a perspective use view of the prior art version of the portable chair apparatus 249 with the user 245 sinking into the soft surface 240 to their left side by virtue of the user's 245 left side prior art chair 249 legs embedding or sinking into the soft surface 240 and FIG. 8 shows a perspective use view of the prior art version of the portable chair apparatus 249 with the user 245 sinking into the soft surface 240 to their back side by virtue of the user's 245 back side prior art chair 249 legs embedding or sinking into the soft surface 240.

Next, FIG. 9 shows a perspective use view of the prior art version of the portable chair apparatus 249 with the user 245 sinking into the soft surface 240 to their front side by virtue of the user's 245 left front prior art chair 249 legs embedding or sinking into the soft surface 240. Further, FIG. 10 is a perspective use view of the portable chair apparatus 30 in the open state 220 with the flexible panel 90 forming a substantially rigid web area 145 that is adjacent 235 to the surface 230 having a slight concave shape from contact with and downward force upon the soft surface 240 from the combined weight of the user 245 and the portable chair apparatus 30.

Broadly the present invention, as best shown in FIGS. 1 through 4, is of a portable chair apparatus 30 that is positioned adjacent 235 to a surface 230, with the portable chair apparatus 30 including a support structure 35 that includes a plurality of beam extensions 40, each of the beam extensions 40 having a longitudinal axis 45 with a beam first end portion 50, a beam second end portion 60, and a beam mid portion 55 positioned therebetween. The plurality of beam extensions 40 form a paired “X” type crossing 65, wherein the beam extensions 40 are pivotally connected 70 to one another at a crossover point 75 adjacent to each of the mid portions 55 in the “X” type crossing 65. Further included in the portable chair apparatus 30 is a flexible panel 90 having a periphery portion 95 that is attached 140 therebetween a pair of the first end portions 50 whose beam extensions 40 form the paired “X” type crossing 65, wherein the pair of first end portions 50 and the flexible panel 90 are both adjacent to the surface 230. Also included in the portable chair apparatus 30 is a flexible seat compartment element 150 having an outer margin 155 that is attached 156 therebetween a pair of the second end portions 60 whose beam extensions 40 form the paired “X” type crossing 65. Noting that the portable chair apparatus as previously described could have only a single paired “X” type crossing 65, seeing use as a stool type chair, although the Figures show the portable chair apparatus 30 with a plurality of paired “X” type crossings 65.

Wherein operationally, the portable chair apparatus 30 has an open operational state 220, see FIG. 1 with the flexible panel 90 being drawn substantially taut 100 thereby setting a distance 105 between the first end portions 50, with the flexible panel 90 forming an increased area contact 110 with the surface 230, see FIG. 4, while the flexible seat compartment element 150 has a slack condition 160 between the second end portions 60. Continuing, the portable chair apparatus 30 also having a stowed state 225, see FIG. 3, wherein the plurality of beam extensions 40 are brought together 165 with each longitudinal axis 45 becoming more parallel 170 by virtue of the flexible panel 90 and said flexible seat compartment element 150 collapsing 175, see FIG. 2 for the transition between the open state 220 and the closed state 225. The preferred materials of construction for the beam extensions 40 and their associated pivotal connections 70, 80, and 85 are carbon steel that is coated with a weatherproof surface, alternative materials would include any material that has strength to support a heavy user 245 such as 250+ pounds and is weatherproof. The preferred material of construction for the flexible seat compartment element 150 is a heavy nylon type weaved fabric similar to a tarp material or any other material that is weatherproof, has strength to support a heavy user 245 such as 250+ pounds, and has some degree of flexibility.

As a further option for the portable chair apparatus 30, can further comprise a plurality of paired “X” type crossing sets 65 of the beam extensions 40 wherein the beam extension first end portions 50 are all attached to the flexible panel 90 periphery 95 and the beam extension second end portions 60 are all attached 156 to the outer margin 155 of the flexible seat compartment element 150, see FIG. 1. Also as an option on the portable chair apparatus 30 is to have the beam extension first end portions 50 pivotally connected 80 to one another as between each the paired “X” type crossing 65 sets, see FIG. 1. As an optional follow on to this the portable chair apparatus 30 can have the beam extension second end portions 60 being pivotally connected 85 to one another as between each paired “X” type crossing 65 sets, also see FIG. 1. Or as an option to combining the beam extension first end portions 50 pivotal connections 80 and the beam extension second end portions 60 pivotal connections 85 of the portable chair apparatus 30 such that the beam extension first end portions 50 are pivotally connected 80 to one another as between each paired “X” type crossing 65 sets and the beam extension second end portions 60 are pivotally connected 85 to one another as between each paired “X” type crossing 65 sets, also see FIG. 1.

Looking at more detail on the flexible panel 90 of the portable chair apparatus 30 wherein the flexible panel 90 is preferably constructed of a laminate 115 including a sheet material 120 with a broad flat reinforcing strap 125 that is substantially taut 100 as between the beam extension first end portions 50 when the portable chair apparatus 30 is in the open state 220, see FIGS. 4 and 5. Further, on the portable chair apparatus 30 for the flexible panel 90 optionally on the preferred materials of construction the flexible panel 90 can be constructed of a laminate 115 including a sheet 120 material as previously described, however, with a plurality of broad flat reinforcing straps 125 that are all substantially taut 100 as between opposing or oppositely positioned beam extension first end portions 50 when the portable chair apparatus 30 is in the open state 220, such that the flexible panel 90 plurality of straps 125 all have a substantially taut condition 130 from the attachments 140 of the straps 125 to the oppositely disposed 135 beam extension first end portions 50. Thereby the straps 125 setting the distance 105 that the first end portions 50 would spread apart by providing a “gauge” for the stopping point of the open state 220 of the portable chair apparatus 30, see again FIGS. 4 and 5. Note that this “gauge” of the flexible panel 90 means that the flexible seat component element 150 does not act as the “gauge” in setting the distance 105 that the first end portions 50 would spread apart, see FIGS. 4 and 5, as does the prior art portable chair apparatus 249, please see FIGS. 6 through 9, meaning that the only restriction in the prior art chair 249 is the flexible seat and back element 150 for holding the distance 105 that the first end portions 50 would spread apart. The preferred material of construction for the sheet 120 is a heavy nylon type weaved fabric similar to a tarp material or any other material that is weatherproof, has strength equal to or better than the unit psi loading as described below, and has some degree of flexibility. The preferred material of construction for the reinforcing strap 125 is a heavy nylon type weaved fabric similar to a cargo tie down strap or seat belt type material or any other material that is weatherproof, has good tensile strength of about 100 pounds force or more, and also has some degree of flexibility.

This additionally results in the flexible panel 90 forming a substantially rigid web area 145; see FIG. 5, as against the surface 230 which in turn increases the load bearing area of the portable chair apparatus 30 that is in contact with the surface 230, especially see FIG. 4. This is especially important when the surface is in a soft state 240, such as soggy soil, snow, sand, and the like, wherein a conventional portable chair leg would quickly sink into the surface causing extreme unbalance and discomfort for the individual user 245, wherein the substantially rigid panel 90 (when the portable chair apparatus 30 is in the open state 220) adds significant surface area for the load (being the combined weight of the chair 30 and the user 245) to in effect drop the high unit load of a prior art portable chair apparatus 249 footprint on the surface 230, see FIGS. 6 through 10, (typically in pounds per square inch-psi) of 25 psi for a conventional prior art portable chair 249 (assuming a 200 pound prior art chair 249 and user 245 combined weight and a total of 8 square inches of chair leg contact surface area adjacent to the surface 230) to less than 1 psi for the present invention 30 (assuming the same combined weight of 200 pounds and a total surface contact area 110 of about 262 square inches) due to the panel 90, thus making the present invention portable chair 30 more usable in a soft surface 240 situation by helping to prevent a portable chair leg first end portion 50 from excessively sinking into the soft surface 240 from the combined weight of the user 245 and the portable chair apparatus 30.

Note that the flexible panel 90 rigidity 145 is reinforced in several ways, first by the weight of the user 245 acting to increase the distance 105 as between the beam extension 40 first end portions 50 which acts to increase the taut 100 condition of the flexible panel 90, see FIGS. 1, 4, 5, and 10, plus secondly by the flexible panel 90 assuming a slightly concave profile on its side adjacent to the surface 230, see FIG. 10, wherein the beam extension first end portions 50 are somewhat embedded into the soft surface 240 deeper than the flexible panel 90 thus the flexible panel 90 will want to pull the beam extension first end portions 50 inward with movement toward one another 165, see FIG. 2, as the flexible panel 90 has a higher bearing load as being adjacent to the soft surface 240 with more contact force, however, this movement 165 will be resisted by the weight of the user 245 in the chair 30 and the beam extension first end portions 50 being semi embedded in the soft surface 240. This substantial rigidity of the flexible panel 90 is operational to maintain the increased surface area 110 to help prevent the portable chair apparatus 30 from sinking into the soft surface 240. This prior art chair 249 leg sinking into the soft surface 240 issue can also be exacerbated by the user 245 typically leaning to their right, left, forward, or backward in their normal use of the chair 249 which effectively can double the unit load in psi as between the chair leg contacting the soft surface 240 as previously discussed, see FIGS. 6 through 9, resulting in going from 25 psi to 50 psi which acts to worsen the prior art chair 249 leg sinking into the soft surface 240 situation.

As an added option, the portable chair apparatus 30 can further comprise a flexible accessories tray 180 having an outer edge portion 190 that is attached 200 therebetween a pair of the beam extension mid portions 55, see FIGS. 1 through 3, and 5. Continuing, on the portable chair apparatus 30 wherein the flexible accessories tray 180 can further include a drawstring 205 positioned adjacent to outer edge portion 190 that is operational to further enhance a concave shape 210 of the flexible accessories tray 180 that is disposed opposite of the surface 230 for the purpose of helping to retain accessories 215, which can be suntan lotion, drinks, snacks, keys, and the like, see FIG. 1. The preferred material of construction for the flexible accessories tray 180 is a nylon type weaved fabric similar to a tarp material or any other material that is weatherproof and has some degree of flexibility.

CONCLUSION

Accordingly, the present invention of a portable chair apparatus has been described with some degree of particularity directed to the embodiments of the present invention. It should be appreciated, though, that the present invention is defined by the following claims construed in light of the prior art so modifications the changes may be made to the exemplary embodiments of the present invention without departing from the inventive concepts contained therein.