Patents in Class 33/27.020

Matches 1 - 50 out of 92

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Match	Document	Document Title
1	6981328	Compass and ellipsograph for persons with manual limitations A safe, stable compass for making circles and ellipses, having a stable rotating platform with a variably adjustable arm that allows the device to be self-supporting upon a surface and to be easily...
2	6978550	Protractor and ruler combination A protractor and ruler combination includes a main ruler having a side formed with a protractor, a secondary ruler rotatably mounted on the main ruler, and an auxiliary ruler having a side secured...
3	6918720	Circle forming attachment for hand held power tool A circle forming apparatus ( 100 ) for a power tool and a method for using the apparatus provides for the formation of circles or circular apertures in a workpiece. A first arm ( 104 ) and second...
4	6886263	Auxiliary drafting instrument combination applicable to digital board Auxiliary drafting instrument combination applicable to digital board, including a base seat formed with at least one pivot hole; a compass having a pivot seat for pivotally connecting two legs, a...
5	6871406	Protective member for compass pins A protective member is provided for a compass device including two pivotably connected legs wherein one leg has a distal end including a projecting pin. This end also includes matching elongate...
6	6497051	Digital measuring device A measurement device having a pair of legs. Each leg has a measurement point and a fulcrum end, the fulcrum ends providing a pivot point for the legs so that the measurement points arcuately move...
7	6430819	Sport measuring apparatus A measuring apparatus for identifying the boundaries and indicia of a basketball court or street hockey rink, respectively. In a first embodiment, the measuring apparatus comprises the combination...
8	6363622	Multipurpose retractable tape measure A tape measure usable for positioning and repositioning an object on a vertical surface comprises a housing having a planar forward surface, a rearward surface spaced from the forward surface, and...
9	6311404	Retractable safety mechanism and compass and method of using the same A compass assembly, a system and a method of using the compass assembly are provided. The compass assembly has a removable marking device attached to one of the legs. The other leg contains a...
10	6276956	Dual point test probe for surface mount type circuit board connections An insulative caliper type pivotal mounting pivotally secures two elongate arms that at their free ends mount a pair of electrically conductive pointed contacts. Electrical conductors connected to...
11	6233835	Scribe/guide tool adapted for stair construction A scribe/guide tool used as a compass and to layout stair stringers. The tool is also used in conjunction with a straightedge or a rule to function as a compass, and is most often used in pairs. A...
12	6167628	Carpenter's gauge A carpenter's gauge for use as a marking gauge or a compass includes a compass bar, a pin carrier, and a marking instrument holder. The compass bar is an elongated bar having a slot formed along...
13	6003231	Compass with adjusting means A compass with an adjusting mechanism for adjusting the compass legs and for changing the distance between the compass points, wherein each compass leg includes a pivot bearing and an adjustment...
14	5979066	Compass The compass according to the invention comprises a compass top and two compass legs (1,2) mounted rotatably in the compass top, the compass top comprising two top-halves (3,4). Provided in each...
15	5894671	Compass with angle trisecting capability A new geometric instrument-compass for a practical use that allows the trisection of an arbitrary angle as well as retains its effective functionality for operations that can be performed by the...
16	5870830	Conic section compass Conic Section Compass (CSC) is a hand-held drawing device. It applies a mathematics concept. CSC can be used to draw circles, ellipses, parabolas, hyperbolas or make surface curvatures of these...
17	5630278	Circle compass A device for forming circles that includes a first member which is rotatably attached to a second member. The first and second members include a first peripheral section and a second peripheral...
18	5555630	Compass with safety pivot A compass (1) with safety pivot is disclosed for drawing arcs or complete circles on a surface without perforating it and in an absolutely safe manner for young users. The safety pivot of said...
19	5546663	Compass having a squat tip FIG. 1 shows a drawing instrument which is in chain dotted lines except for a lower portion of one leg of the instrument. The leg is formed generally of plastics and has a metal end piece provided...
20	5542185	Device for describing arcs The present invention is directed to a device for describing arcs. The device includes a pair of legs connected at a pivot joint. A shoe is disposed at the end of one leg to support the device and...
21	5115571	Reversible pen-caliper device and method A pen-caliper device includes a pen assembly having a pen barrel, a ballpoint ink cartridge in the barrel, and a mechanism engaging the ink cartridge and the barrel for advancing the ink cartridge...
22	4858326	Geometric instrument and method of making same A pair of compasses has legs articulated by a pivot pin. Each leg is of moulded plastics with a strengthening metal insert provided in each leg. Projecting circular parts of the inserts are...
23	4843719	Pair of measuring compasses In a two-legged pair of compasses the one leg (10) is provided with a measuring and mounting facility (40) which, at one of its ends (41), is linked to this leg (10) and which, at its other end...
24	4815881	Multi-purpose combination writing instrument A multi-purpose combination writing instrument which has an elongated core member with a hexagon cross section received in a correspondingly shaped pen tube consisting of a right and left members...
25	4734992	Drawing instrument A drawing instrument incorporates two substantially planar members each formed with a straight guide edge and a mechanism connecting the members to permit them to rotate relatively to one another...
26	4662076	Compass A compass, comprising a sliding rod with a handle at an upper end, and a drawing portion. A slider is slidably mounted on the sliding rod. Two links are pivotally connected to the slider and to the...
27	4622747	Cutting device and method for profiling sheet material The method includes the steps of placing one edge of a resilient sheet, such as vinyl, in adjacent relation with an irregular or nonlinear edge with which the material is to be mated or fitted....
28	4561184	School utensil and toy robot A school utensil and toy is provided which includes a support member, two leg members rotatably connected to the support member and two foot members rotatably connected to the leg members. At least...
29	4555852	Hand device for determining vehicle position A hand-held device for the determination of the momentary position of a vehicle, especially an airplane, moving at least approximately in a straight line and at about constant speed, has two...
30	4542587	Drawing compass apparatus Drawing compass apparatus includes an axis defining portion, a grip portion, and a fastening portion. The axis defining portion includes an elongated leg member, the leg member having a blunt end...
31	4358894	Compass pencil clamp A drawing compass having two legs is provided with a writing implement or pencil clamp in the form of a cylindrical band having a side opening. A longitudinally extending flexible rib is provided...
32	4327491	Holder for lead insert and needle for a compass An improved compass leg provided with a lower leg portion having an elongated cavity in which a pin or lead insert holder is received and secured by means of a threaded shaft attached to the holder...
33	4173076	Scriber-compass with spring-loaded center punch A scriber-compass comprises a pair of first and second arms pivotally connected together at first ends thereof and a threaded rod, having a thumb nut threadably mounted thereon, adapted to...
34	4163322	Compass with fine adjustment A compass is provided which includes a fine adjustment mechanism comprising lateral spreader bars attached to the respective compass legs and a central drive wheel meshing with the spreader bars....
35	4156313	Compass housing A compass housing of the type used for supporting a pair of adjustable compass legs in resilient contact with a spring clip. The housing includes a transverse cross-shaft as a bearing for the upper...
36	4150486	Drawing compass A drawing compass has mounted on a projecting stub an internally screw-threaded clamping nut which is for clamping a pencil, ball-point pen, or the like in place in the stub. The nut is held...
37	4146965	Drawing instrument A drawing instrument comprises a pair of die-cast limbs pivotally connected together to form an assembly at the inner ends thereof. A bow top has an interior hole and fork limbs having inside faces...
38	4120092	Plastic injection molded bow compass A bow compass, the parts of which are formed by a plastic injection molding process. The compass is provided with a fine adjustment by threaded means and also a quick adjusting coarse adjustment....
39	4106200	Marker compass A marker compass assembly including a leg of fixed length. A cross-arm is pivotally mounted to one end of the leg. The other end of the leg is structured to facilitate positioning at a desired...
40	4022651	Apparatus for laying pressure sensitive tape from a tape roll A tape laying device is illustrated having a vertical frame, a transverse pressure roll carried by the frame supporting same for rolling movement thereon, a tape roll support, a transverse guide...
41	3934343	Device for cutting circles Disclosed is a device for cutting circles and the like consisting essentially of an adapter for mounting on one leg of a compass and into which is threaded a blade holder provided with a blade.
42	3842508	DRAFTSMAN COMPASSES Draftsman compass having links pivoted at one end to the leg of the compass, respectively, and at the other end to one another through a pivotal connection guided in rectilinear grooves formed in...
43	3797119	DRAWING INSTRUMENT A drawing compass-like instrument for producing spiral-like curves in which a worm is positioned on one leg of the instrument and a worm gear is positioned on the other leg of the instrument, the...
44	3797117	COMPASS BALLPOINT PEN A compass ballpoint pen combination comprising a case having curved surfaces and defining an asymmetric compartment for receiving therein a ballpoint pen cartridge. The case forms a longitudinal...
45	3787980	COMPASSES WITH RELEASABLE POINTS A needle point or pencil point is releasably fastened to a leg or branch of compasses in a receptacle slotted transversely to the plane of relative movement of the two branches or legs, the...
46	3768166	DRAWING INSTRUMENTS A drawing instrument is provided with integral legs joined at one end which may be pinned together on a co-acting pivot center at the joined end and which may further include rotatable journal...
47	3745662	BOW COMPASSES A pair of bow-compasses having the upper ends of its legs assembled by a bow-shaped spring engaging notches formed externally of said ends, the inner faces of said legs comprising each a...
48	3683505	CIRCLE MAKER APPARATUS This invention is a marking device including a main support body; clamp members connected through connector means to the support body; and marking means mounted within the respective clamp members...
49	3664030	APPARATUS FOR MAKING ROTARY CUTTING DIES Apparatus for making dies for rotary cutting cylinders which is portable and has spaced circular mounting heads upon which a die board can be mounted for scribing, drilling, cutting, etc. One of...
50	3662468	PRECISION COMPASSES OR DIVIDERS Compasses or dividers having legs connected by a rod which engages the legs with right-handed and left-handed threads respectively and carries a knurled, central adjusting wheel are equipped with a...

Matches 1 - 50 out of 92

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