Title:
Marine panel hanging assembly
United States Patent 3899989
Abstract:
A marine panel hanging assembly for hanging marine panel sections in spaced relationship with the inside surface of a ship's hull, in one embodiment, utilizing a metallic bulkhead stiffener already in place in which first and second insulator plates are clamped around the bulkhead stiffener and held in place by first and second clamp plates to which are attached via screws thereto in a non-metal to metal heat transfer relationship. Another embodiment for utilization with metallic bulkheads consists of a primary contact insulator against the bulkhead to which is attached a metallic saddle having a saddle insulator in contact with a backwall thereof and a metallic nut plate in contact therewith which in turn has an insulative bolt plate ahead of it. The nut plate being displaced from the saddle assembly and the panels being attached directly to the sliding bolt plate resulting in no metal to metal heat transfer. A third embodiment is for utilization with a bulkhead which is accessible from each side and utilizes an insulator on each side of the bulkhead with a bore through the bulkhead to which is attached a tubular clamp screw insulator. A clamp screw is passed through both insulators with a clamp plate on the faces of each insulator to hold the entire assembly together, the clamp plate acting as a nut plate with threaded apertures therein for screwing wall panels thereto.
US Patent References:
Insulated boat construction
Hussman - February 1935 - 1991675
INSULATED METAL WALL STRUCTURE
Manias - October 1969 - 3474583
STORAGE CONTAINERS FOR LIQUIDS
Hamilton - March 1973 - 3719302
DOUBLE WALL CARGO TANK HAVING INSULATING SECONDARY BARRIER
Bridges et al. - May 1974 - 3811593
Insulated boat construction
Hussman - February 1935 - 1991675
INSULATED METAL WALL STRUCTURE
Manias - October 1969 - 3474583
STORAGE CONTAINERS FOR LIQUIDS
Hamilton - March 1973 - 3719302
DOUBLE WALL CARGO TANK HAVING INSULATING SECONDARY BARRIER
Bridges et al. - May 1974 - 3811593
Application Number:
05/405017
Publication Date:
08/19/1975
Filing Date:
10/10/1973
View Patent Images:
Export Citation:
Assignee:
National Building Industries (National City, CA)
Primary Class:
Other Classes:
114/74A, 52/481.100
International Classes:
B63B3/68; E04B2/74; B63B3/00; B63B3/68
Field of Search:
114/84,74A 52/403,483,395
Primary Examiner:
Blix, Trygve M.
Assistant Examiner:
Basinger, Sherman D.
Claims:
I claim
1. A panel hanging assembly for coupling insulative panels to a vertically disposed metallic member comprising:
2. The panel hanging assembly of claim 1 wherein:
3. The panel hanging assembly of claim 1 wherein:
1. A panel hanging assembly for coupling insulative panels to a vertically disposed metallic member comprising:
2. The panel hanging assembly of claim 1 wherein:
3. The panel hanging assembly of claim 1 wherein:
Description:
BRIEF DESCRIPTION OF THE INVENTION
The present invention relates to a marine panel hanging assembly, and more particularly to a marine panel hanging assembly having minimal or no metal to metal heat transfer between the hull or bulkhead and the panel.
According to the invention, a marine panel hanging assembly is provided for hanging non-combustible insulative wall panels in a spaced relationship with a metallic hull or bulkhead on a ship. The space requirement is for fireproofing and hence a minimum heat transfer becomes extremely desirable which is the general purpose of the instant invention. In one embodiment for hanging panels in spaced relationship with the metallic hull, the in-place hull stiffener is utilized for attaching the panel hanging assembly. Here a pair of insulative blocks is placed on each side of the hull stiffener member and clamped around the hull stiffener member by a clamp screw passing through metallic clamp plates on each side of the insulative blocks. The clamp plates are spaced from the metallic hull stiffener and the front clamp plate has tapped screw holes for attaching wall panels thereto via panel screws. This arrangement results in no metal to metal heat transfer between the mounting screws of clamp plate to which the wall panels are attached and the metallic hull, thereby maximizing heat insulation.
A second embodiment for attachment to bulkheads accessible from each side lines in placing an insulative block on each side of the bulkhead with a tubular insulator passing through the bulkhead and partially through at least one of the insulative blocks with a clamp. A clamp plate is then placed on the outer exposed faces of the insulative blocks with a clamp screw passed through the clamp plates and the tubular insulator for clamping the entire assembly to the bulkhead. The panels can then be hung on the clamp plates via threadable engagement with a panel screw and the clamp plates themselves, again resulting in no metal to metal path for heat transfer between the panels and bulkhead.
A third embodiment is utilized in hanging panels on a bulkhead having only one accessible side. In this embodiment, an insulative block is placed against the bulkhead with a metallic saddle attached via saddle bolts passing through the saddle and engaging a tapped hole in the bulkhead. The saddle has a channel for receiving a second insulative block after which a bolt plate insulator carrying a nut plate is placed within the channel, the nut plate and bolt plate carrying panel screw holes for threadably engaging a panel with the nut plate.
An object of the present invention is the provision of an improved marine panel hanging assembly.
Another object of the invention is the provision of a marine panel hanging assembly which has minimal heat transfer characteristics.
A further object of the invention is the provision of a marine panel hanging assembly utilizing in-place hull stiffeners.
Yet another object of the invention is the provision of a marine panel hanging assembly for utilization with bulkheads accessible from only one side.
A still further object of the invention is the provision of a marine panel hanging assembly for hanging panels in substantially parallel relationship with the curved portion of a ship's hull; and
Yet another object of the invention is the provision of a marine panel hanging assembly which is inexpensive to manufacture and extremely convenient and adaptable in use.
Other objects and many of the attendant advantages of the present invention will be readily appreciated as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings in which like reference numerals designate like parts throughout the Figures thereof and wherein:
FIG. 1 is a perspective view of a typical marine panel installation environment;
FIG. 2 is a top view of a typical prior art panel hanging assembly;
FIG. 3 is a top view of another prior art assembly;
FIG. 4 is a perspective view of a preferred embodiment of the present invention as applied to a ship's metallic hull;
FIG. 5 is a top view partially sectioned of the embodiment of FIG. 4;
FIG. 5A is a perspective view partially broken away of a modification of FIGS. 4 and 5;
FIG. 6 is a sectional view of a modification of FIG. 5 as applied to a curved portion of a metallic hull;
FIG. 7 is a perspective view partially sectioned of another embodiment of the present invention as applied to a bulkhead accessible from both sides;
FIG. 8 is a perspective view partially sectioned of a further embodiment of the present invention as applied to a bulkhead accessible from one side only;
FIG. 9 is a perspective view of a modification of FIG. 8;
FIG. 10 is a perspective view partially broken away of a modification of the embodiment of FIGS. 4 and 5;
FIG. 11 is a top view partially sectioned of the embodiment of FIG. 10; and
FIG. 12 is a top view partially sectioned of a modification of the embodiment of FIGS. 10 and 11.
DETAILED DESCRIPTION OF THE DRAWING
Referring to FIG. 1, a section of a metallic hull is shown at 11 having a metallic hull stiffener 12 welded thereto at 13. Stiffener 12 has a face section 14 to which is attached wall panels 16 and 17 via panel screws 18 and 19.
Referring to FIG. 2, a typical prior art panel hanging technique is shown having a hull 11 with a hull stiffener 12 welded thereto at 13. A hanging bracket 21 is welded to the face section 14 of stiffener 12 at 22. Panels 16 and 17 are attached to hanging bracket 21 via threaded screws 18 and 19.
Referring to FIG. 3, another prior art technique is shown where a steel hull shown at 11 has hull stiffener 12 welded thereto at 13. Insulative block 23 is held against face portion 14 of stiffener 12 via panel screws 18 and 19 passing through panel sections 16 and 17 and insulative block 23 and held in threadable engagement with face portion 14.
Referring to FIGS. 4 and 5, steel hull 11 has hull stiffener 12 welded thereto at 13 with face portion 14 sandwiched between insulative blocks 26, 27, 28 and 29. Insulative blocks 26, 27, 28 and 29 are held in abutting relationship with face portion 14 of hull stiffener 12 via clamp plates 31 and 32. Clamp plates 31 and 32 are held in a clamping relationship with the insulative blocks 26, 27, 28 and 29 and face portion 14 of reinforcer 12 via clamp screw 33 and clamp nut 34. Clamp plate 31 has a pair of panel screw holes 36 and 37 in abutting relationship with panel screw holes 38 and 39, respectively, of wall panels 16 and 17.
Referring to FIG. 5A, panels 16A and 17A are shown coupled to clamp plate 31A via clamp plate screw 40 being in threadable engagement with threaded aperture 35 of clamp plate 31A. Clamp washer 40A is carried within mating circular recesses in panels 16A and 17A.
Referring to FIG. 6, a curved metallic hull portion 11A is shown with a metallic reinforcer 12 welded thereto at 13. Metallic reinforcer 12 has a face portion 14 in parallel relationship with the centerline (not shown) of the hull. Here, bevelled insulative blocks 41, 42 and 43 are clamped around face portion 14 of metallic hull reinforcer 12 in the same manner via clamp plates 31 and 32, clamp plate screw 33, and clamp plate nut 34. Wall panels 16 and 17 are held via panel screws 44 and 46 in threadable engagement with clamp plate 31. Panels 16 and 17 are held via the bevelling of insulative blocks 41 and 42 and 43 in a general parallel relationship with metallic hull section 11A.
Referring to FIG. 7, a bulkhead section 51 is shown having an aperture (not shown) therein which receives tubular clamp screw insulator 52. Tubular clamp screw insulator 52 is recessed within insulative blocks 53 and 54 which are held against bulkhead 51 via a clamp screw 56 on the face of a front clamp plate and panel nut plate 57 via a clamp screw 58 passing through front clamp plate 57, insulative block 54, tubular clamp screw insulator 52, insulative block 53 and back clamp plate 58. Front clamp plate 57 has panel screw holes (not shown) substantially identical with panel screw holes 59 and 61 and front clamp plate 57.
Referring to FIG. 8, a bulkhead 62 is shown having a insulator block 63 in abutting relationship therewith. A saddle plate 64 has a pair of saddle tabs 66 and 67 with saddle bolts 68 and 69 therein passing through insulative block 63 and in threadable engagement with bulkhead 62. Saddle bracket 64 has an upper saddle skirt 71 and a lower saddle skirt 72 dimensioned for receiving insulative block 73. Upper saddle skirt 71 and lower saddle skirt 72 are also dimensioned for slidably receiving insulative block 74 and nut plate 76 carried within a recess 77 in the back surface of insulative block 74. Insulative block 74 has panel screw holes 78 and 79 therein and a raised face area for direct contact with panels.
Referring to FIG. 9, insulative block 63 is clamped to a bulkhead (not shown) via bolts 68A and 69A in saddle 64A. The upper saddle skirt 71A has an insulator holding screw hole 75A and a lower saddle skirt 72A has an insulator holding screw hole 75B.
Referring to FIGS. 10 and 11, a modification of the embodiment in FIGS. 4 and 5 is illustrated. Here the hull stiffener 12A is T-shaped instead of L-shaped. The marine panel hanging assembly itself is symmetrical with insulative blocks 26A, 27A and 28A, symmetrically disposed around face 14A of hull stiffener 12A and between front clamp plate and nut plate 31A and back clamp plates 32A. Here two clamp screws 33 and nuts 34 are utilized.
Referring to FIG. 12, a modification of the embodiment of FIGS. 10 and 11 is shown utilizing a J-shaped front clamp plate 31B necessitating a variation of insulative blocks 28B, 29A and 29B.
OPERATION
Referring back to FIG. 1, it can be seen that wall panels 16 and 17 are spatially disposed from metallic hull section 11 which is required for fireproofing. In this typical embodiment, the wall panels 16 and 17 are attached by panel screws 18 and 19 and the general appearance will be the same whether the prior art is utilized or the instant invention.
FIG. 2 illustrates a typical prior art method of hanging the panels where a panel hanging bracket 21 is welded at 22 to face portion 14 of an in-place hull stiffener 12 which is welded at 13 to hull 11. The disadvantage here, of course, is that there is a direct metal to metal transfer between hull 11 and the backs of panels 16 and 17.
Referring to FIG. 3, bracket 21 has been replaced with an insulative block 23 with hanging screws 18 and 19 in threadable engagement with apertures in face portion 14 in stiffener 12. The main disadvantage here lies in the direct heat transfer from panels 16 and 17 to hull 11 through stiffener 12 and panel screws 18 and 19.
Referring to FIGS. 4 and 5, one embodiment of the present invention is utilized whereby the face portion 14 of hull stiffener 12 is sandwiched in between a plurality of blocks 26, 27, 28 and 29 and held in place by clamp screws 33 and clamp nut 34 passing through clamp 31 and 32. Clamp plate 31 is bent around one side of the assembly. Clamp plate 31 actually forms a panel nut plate and is threadably engaged with panel screws passing through panel screw holes 38 and 39 in panels 16 and 17 and is in threadable engagement with holes 36 and 37 in front clamp plate 31. Here it can be seen that there is no metal to metal heat transfer between hull and wall panels 16 and 17.
Referring back to FIG. 5A, separate clamp plate screws have been replaced by one clamp plate screw 40. The clamping surface now becomes the inside surface of clamp washer 40A which allows for relative movement (such as by material contraction) of panels 16A and 17A without destroying coupling integrity.
Referring back to FIG. 6, the structure is identical to the embodiments of FIGS. 4 and 5 with the exception of the angle or bevelled insulative blocks 41, 42 and 43 to angle front clamp plate 31 with respect to face portion 14 of hull reinforcer 12 for the purpose of bringing wall panels 16 and 17 in a more parallel relationship with a curved section of hull 11A. Here it is pointed out that the existing or in-place hull stiffeners 12 are normally mounted in this manner with face portion 14 in parallel relationship to the centerline of the ship and not to the hull portion at which it is attached.
Referring to FIG. 7, a bulkhead 51 is shown which is accessible from both sides allowing insulative blocks 53 and 54 to abut bulkhead 51 on each side thereof. Here the front clamp plate 57 covers insulative block 54 and is held in place via clamp screw 56 passing through clamp plate 57, insulative block 54, tubular clamp screw insulator 52, which passes through bulkhead 51 and the insulative block 53 on the other side of bulkhead 51 and its clamp plate 58. In this embodiment, each clamp plate forms a panel nut plate to which panels are mounted via panel mounting screws in threadable engagement with panel mounting screw holes 59 and 61 in clamp plate 57 for example. The same arrangement is on clamp plate 58 for hanging panels on the other side of bulkhead 51. Here it is pointed out that there is no metallic heat transfer path between bulkhead 51 and panels to be hung therefrom due to the tubular clamp screw insulator 52.
Referring to FIG. 8, a marine panel hanging assembly for utilization with a bulkhead accessible from one side only is shown, the bulkhead being the section shown as 62. In this embodiment a primary insulative block 63 is in abutting contact with bulkhead 62 and is held thereto via a saddle bolt 68 passing through saddle tab 66 of saddle 67 and insulative block 63. Bolt 68 is in threadable engagement with a tapped hole in bulkhead 62. A second insulative block is received by saddle 64 between upper and lower skirts 71 and 72, respectively, and a third insulative block 74, which is actually a bolt plate, carries a nut plate 76 in recess 77 which is then slidably received by saddle 64 with the nut plate 76 in abutting relationship with the second insulative block 73. Nut plate 76 has projections to bend over insulative block 73 to capture the entire assembly. The panel is then hung on bolt plate 74 via panel screws in panel screw holes 78 and 79 and in threadable engagement with apertures in nut bolt plate 76 (not shown). Here a heat transfer path is broken by raised face area on plate 74 spatially displacing panels from a prospective contact area of the wall panel with saddle 64.
Referring to FIG. 9, the operation is exactly the same as FIG. 8 except the saddle tabs 66 and 67 have been eliminated and saddle bolts 68A and 69A pass through apertures in the backwall of saddle 64A.
Referring back to FIGS. 10, 11 and 12, it can be seen that metal to metal heat paths between hull 11 and panels 16 and 17 have been eliminated as in the embodiment of FIGS. 4 and 5.
It should be understood, of course, that the foregoing disclosure relates to only a preferred embodiment of the present invention, and that it is intended to cover all changes and modifications of the example of the invention herein chosen, for the purposes of the disclosure, which do not constitute departures from the spirit and scope of the invention.
The present invention relates to a marine panel hanging assembly, and more particularly to a marine panel hanging assembly having minimal or no metal to metal heat transfer between the hull or bulkhead and the panel.
According to the invention, a marine panel hanging assembly is provided for hanging non-combustible insulative wall panels in a spaced relationship with a metallic hull or bulkhead on a ship. The space requirement is for fireproofing and hence a minimum heat transfer becomes extremely desirable which is the general purpose of the instant invention. In one embodiment for hanging panels in spaced relationship with the metallic hull, the in-place hull stiffener is utilized for attaching the panel hanging assembly. Here a pair of insulative blocks is placed on each side of the hull stiffener member and clamped around the hull stiffener member by a clamp screw passing through metallic clamp plates on each side of the insulative blocks. The clamp plates are spaced from the metallic hull stiffener and the front clamp plate has tapped screw holes for attaching wall panels thereto via panel screws. This arrangement results in no metal to metal heat transfer between the mounting screws of clamp plate to which the wall panels are attached and the metallic hull, thereby maximizing heat insulation.
A second embodiment for attachment to bulkheads accessible from each side lines in placing an insulative block on each side of the bulkhead with a tubular insulator passing through the bulkhead and partially through at least one of the insulative blocks with a clamp. A clamp plate is then placed on the outer exposed faces of the insulative blocks with a clamp screw passed through the clamp plates and the tubular insulator for clamping the entire assembly to the bulkhead. The panels can then be hung on the clamp plates via threadable engagement with a panel screw and the clamp plates themselves, again resulting in no metal to metal path for heat transfer between the panels and bulkhead.
A third embodiment is utilized in hanging panels on a bulkhead having only one accessible side. In this embodiment, an insulative block is placed against the bulkhead with a metallic saddle attached via saddle bolts passing through the saddle and engaging a tapped hole in the bulkhead. The saddle has a channel for receiving a second insulative block after which a bolt plate insulator carrying a nut plate is placed within the channel, the nut plate and bolt plate carrying panel screw holes for threadably engaging a panel with the nut plate.
An object of the present invention is the provision of an improved marine panel hanging assembly.
Another object of the invention is the provision of a marine panel hanging assembly which has minimal heat transfer characteristics.
A further object of the invention is the provision of a marine panel hanging assembly utilizing in-place hull stiffeners.
Yet another object of the invention is the provision of a marine panel hanging assembly for utilization with bulkheads accessible from only one side.
A still further object of the invention is the provision of a marine panel hanging assembly for hanging panels in substantially parallel relationship with the curved portion of a ship's hull; and
Yet another object of the invention is the provision of a marine panel hanging assembly which is inexpensive to manufacture and extremely convenient and adaptable in use.
Other objects and many of the attendant advantages of the present invention will be readily appreciated as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings in which like reference numerals designate like parts throughout the Figures thereof and wherein:
FIG. 1 is a perspective view of a typical marine panel installation environment;
FIG. 2 is a top view of a typical prior art panel hanging assembly;
FIG. 3 is a top view of another prior art assembly;
FIG. 4 is a perspective view of a preferred embodiment of the present invention as applied to a ship's metallic hull;
FIG. 5 is a top view partially sectioned of the embodiment of FIG. 4;
FIG. 5A is a perspective view partially broken away of a modification of FIGS. 4 and 5;
FIG. 6 is a sectional view of a modification of FIG. 5 as applied to a curved portion of a metallic hull;
FIG. 7 is a perspective view partially sectioned of another embodiment of the present invention as applied to a bulkhead accessible from both sides;
FIG. 8 is a perspective view partially sectioned of a further embodiment of the present invention as applied to a bulkhead accessible from one side only;
FIG. 9 is a perspective view of a modification of FIG. 8;
FIG. 10 is a perspective view partially broken away of a modification of the embodiment of FIGS. 4 and 5;
FIG. 11 is a top view partially sectioned of the embodiment of FIG. 10; and
FIG. 12 is a top view partially sectioned of a modification of the embodiment of FIGS. 10 and 11.
DETAILED DESCRIPTION OF THE DRAWING
Referring to FIG. 1, a section of a metallic hull is shown at 11 having a metallic hull stiffener 12 welded thereto at 13. Stiffener 12 has a face section 14 to which is attached wall panels 16 and 17 via panel screws 18 and 19.
Referring to FIG. 2, a typical prior art panel hanging technique is shown having a hull 11 with a hull stiffener 12 welded thereto at 13. A hanging bracket 21 is welded to the face section 14 of stiffener 12 at 22. Panels 16 and 17 are attached to hanging bracket 21 via threaded screws 18 and 19.
Referring to FIG. 3, another prior art technique is shown where a steel hull shown at 11 has hull stiffener 12 welded thereto at 13. Insulative block 23 is held against face portion 14 of stiffener 12 via panel screws 18 and 19 passing through panel sections 16 and 17 and insulative block 23 and held in threadable engagement with face portion 14.
Referring to FIGS. 4 and 5, steel hull 11 has hull stiffener 12 welded thereto at 13 with face portion 14 sandwiched between insulative blocks 26, 27, 28 and 29. Insulative blocks 26, 27, 28 and 29 are held in abutting relationship with face portion 14 of hull stiffener 12 via clamp plates 31 and 32. Clamp plates 31 and 32 are held in a clamping relationship with the insulative blocks 26, 27, 28 and 29 and face portion 14 of reinforcer 12 via clamp screw 33 and clamp nut 34. Clamp plate 31 has a pair of panel screw holes 36 and 37 in abutting relationship with panel screw holes 38 and 39, respectively, of wall panels 16 and 17.
Referring to FIG. 5A, panels 16A and 17A are shown coupled to clamp plate 31A via clamp plate screw 40 being in threadable engagement with threaded aperture 35 of clamp plate 31A. Clamp washer 40A is carried within mating circular recesses in panels 16A and 17A.
Referring to FIG. 6, a curved metallic hull portion 11A is shown with a metallic reinforcer 12 welded thereto at 13. Metallic reinforcer 12 has a face portion 14 in parallel relationship with the centerline (not shown) of the hull. Here, bevelled insulative blocks 41, 42 and 43 are clamped around face portion 14 of metallic hull reinforcer 12 in the same manner via clamp plates 31 and 32, clamp plate screw 33, and clamp plate nut 34. Wall panels 16 and 17 are held via panel screws 44 and 46 in threadable engagement with clamp plate 31. Panels 16 and 17 are held via the bevelling of insulative blocks 41 and 42 and 43 in a general parallel relationship with metallic hull section 11A.
Referring to FIG. 7, a bulkhead section 51 is shown having an aperture (not shown) therein which receives tubular clamp screw insulator 52. Tubular clamp screw insulator 52 is recessed within insulative blocks 53 and 54 which are held against bulkhead 51 via a clamp screw 56 on the face of a front clamp plate and panel nut plate 57 via a clamp screw 58 passing through front clamp plate 57, insulative block 54, tubular clamp screw insulator 52, insulative block 53 and back clamp plate 58. Front clamp plate 57 has panel screw holes (not shown) substantially identical with panel screw holes 59 and 61 and front clamp plate 57.
Referring to FIG. 8, a bulkhead 62 is shown having a insulator block 63 in abutting relationship therewith. A saddle plate 64 has a pair of saddle tabs 66 and 67 with saddle bolts 68 and 69 therein passing through insulative block 63 and in threadable engagement with bulkhead 62. Saddle bracket 64 has an upper saddle skirt 71 and a lower saddle skirt 72 dimensioned for receiving insulative block 73. Upper saddle skirt 71 and lower saddle skirt 72 are also dimensioned for slidably receiving insulative block 74 and nut plate 76 carried within a recess 77 in the back surface of insulative block 74. Insulative block 74 has panel screw holes 78 and 79 therein and a raised face area for direct contact with panels.
Referring to FIG. 9, insulative block 63 is clamped to a bulkhead (not shown) via bolts 68A and 69A in saddle 64A. The upper saddle skirt 71A has an insulator holding screw hole 75A and a lower saddle skirt 72A has an insulator holding screw hole 75B.
Referring to FIGS. 10 and 11, a modification of the embodiment in FIGS. 4 and 5 is illustrated. Here the hull stiffener 12A is T-shaped instead of L-shaped. The marine panel hanging assembly itself is symmetrical with insulative blocks 26A, 27A and 28A, symmetrically disposed around face 14A of hull stiffener 12A and between front clamp plate and nut plate 31A and back clamp plates 32A. Here two clamp screws 33 and nuts 34 are utilized.
Referring to FIG. 12, a modification of the embodiment of FIGS. 10 and 11 is shown utilizing a J-shaped front clamp plate 31B necessitating a variation of insulative blocks 28B, 29A and 29B.
OPERATION
Referring back to FIG. 1, it can be seen that wall panels 16 and 17 are spatially disposed from metallic hull section 11 which is required for fireproofing. In this typical embodiment, the wall panels 16 and 17 are attached by panel screws 18 and 19 and the general appearance will be the same whether the prior art is utilized or the instant invention.
FIG. 2 illustrates a typical prior art method of hanging the panels where a panel hanging bracket 21 is welded at 22 to face portion 14 of an in-place hull stiffener 12 which is welded at 13 to hull 11. The disadvantage here, of course, is that there is a direct metal to metal transfer between hull 11 and the backs of panels 16 and 17.
Referring to FIG. 3, bracket 21 has been replaced with an insulative block 23 with hanging screws 18 and 19 in threadable engagement with apertures in face portion 14 in stiffener 12. The main disadvantage here lies in the direct heat transfer from panels 16 and 17 to hull 11 through stiffener 12 and panel screws 18 and 19.
Referring to FIGS. 4 and 5, one embodiment of the present invention is utilized whereby the face portion 14 of hull stiffener 12 is sandwiched in between a plurality of blocks 26, 27, 28 and 29 and held in place by clamp screws 33 and clamp nut 34 passing through clamp 31 and 32. Clamp plate 31 is bent around one side of the assembly. Clamp plate 31 actually forms a panel nut plate and is threadably engaged with panel screws passing through panel screw holes 38 and 39 in panels 16 and 17 and is in threadable engagement with holes 36 and 37 in front clamp plate 31. Here it can be seen that there is no metal to metal heat transfer between hull and wall panels 16 and 17.
Referring back to FIG. 5A, separate clamp plate screws have been replaced by one clamp plate screw 40. The clamping surface now becomes the inside surface of clamp washer 40A which allows for relative movement (such as by material contraction) of panels 16A and 17A without destroying coupling integrity.
Referring back to FIG. 6, the structure is identical to the embodiments of FIGS. 4 and 5 with the exception of the angle or bevelled insulative blocks 41, 42 and 43 to angle front clamp plate 31 with respect to face portion 14 of hull reinforcer 12 for the purpose of bringing wall panels 16 and 17 in a more parallel relationship with a curved section of hull 11A. Here it is pointed out that the existing or in-place hull stiffeners 12 are normally mounted in this manner with face portion 14 in parallel relationship to the centerline of the ship and not to the hull portion at which it is attached.
Referring to FIG. 7, a bulkhead 51 is shown which is accessible from both sides allowing insulative blocks 53 and 54 to abut bulkhead 51 on each side thereof. Here the front clamp plate 57 covers insulative block 54 and is held in place via clamp screw 56 passing through clamp plate 57, insulative block 54, tubular clamp screw insulator 52, which passes through bulkhead 51 and the insulative block 53 on the other side of bulkhead 51 and its clamp plate 58. In this embodiment, each clamp plate forms a panel nut plate to which panels are mounted via panel mounting screws in threadable engagement with panel mounting screw holes 59 and 61 in clamp plate 57 for example. The same arrangement is on clamp plate 58 for hanging panels on the other side of bulkhead 51. Here it is pointed out that there is no metallic heat transfer path between bulkhead 51 and panels to be hung therefrom due to the tubular clamp screw insulator 52.
Referring to FIG. 8, a marine panel hanging assembly for utilization with a bulkhead accessible from one side only is shown, the bulkhead being the section shown as 62. In this embodiment a primary insulative block 63 is in abutting contact with bulkhead 62 and is held thereto via a saddle bolt 68 passing through saddle tab 66 of saddle 67 and insulative block 63. Bolt 68 is in threadable engagement with a tapped hole in bulkhead 62. A second insulative block is received by saddle 64 between upper and lower skirts 71 and 72, respectively, and a third insulative block 74, which is actually a bolt plate, carries a nut plate 76 in recess 77 which is then slidably received by saddle 64 with the nut plate 76 in abutting relationship with the second insulative block 73. Nut plate 76 has projections to bend over insulative block 73 to capture the entire assembly. The panel is then hung on bolt plate 74 via panel screws in panel screw holes 78 and 79 and in threadable engagement with apertures in nut bolt plate 76 (not shown). Here a heat transfer path is broken by raised face area on plate 74 spatially displacing panels from a prospective contact area of the wall panel with saddle 64.
Referring to FIG. 9, the operation is exactly the same as FIG. 8 except the saddle tabs 66 and 67 have been eliminated and saddle bolts 68A and 69A pass through apertures in the backwall of saddle 64A.
Referring back to FIGS. 10, 11 and 12, it can be seen that metal to metal heat paths between hull 11 and panels 16 and 17 have been eliminated as in the embodiment of FIGS. 4 and 5.
It should be understood, of course, that the foregoing disclosure relates to only a preferred embodiment of the present invention, and that it is intended to cover all changes and modifications of the example of the invention herein chosen, for the purposes of the disclosure, which do not constitute departures from the spirit and scope of the invention.