Abstract: A dental torque ratchet head and driver handle (8) is formed with a chamber (12a) between first (30) and second (32) pivotably mounted handle members which receives a plastic insert (14) formed in a configuration selected so that the insert fractures at a selected torque to thereby ensure the application of a precalibrated level or torque to an abutment or prosthetic screw of an implant. A solid metal insert (14') can be used to convert the tool to a straight ratchet tool.

Abstract: A tool (10,10',10") for forming and applying an adjustable, selected angle to one or more pieces (8) of building material such as sheet rock, plywood, paneling or the like is shown comprising a first leg (12,12',12") having a longitudinally extending slot (34,54) pivotably attached to a second leg (20) with a connecting link (30) pivotably attached to the second leg and slidably and lockably attached in the slot (34,54) of the first leg (12,12',12")

Abstract: A helical threaded bone tap (10,10',10") for preparing a surgical osteotomy with a defined thread configuration to allow for the insertion of a screw design implant. Incorporated into the tap are four cutting flutes (22) equally spaced, radially, to each other which allow for the removal of bone chips formed during the cutting of the thread. To better assist in this process, cutting flutes (22) are formed with a helical twist to draw the chips outward as the as the osteotomy is being tapped. Distal to the helical threaded bone tap (18) is a driving head having a polygonal configuration (26) and/or a latch type configuration (32) to allow these taps to be driven, respectively, by hand with a ratchet or by using a surgical drilling unit.

Abstract: A coaxial contact assembly (10,10', 10") has a cylindrical ground plunger (30) which is fixedly attached to the ground conductor (1b) of a coaxial cable (1,1') through a ground sleeve (28) and mounted in a test head support (4) for sliding movement therein. An inner contact plunger barrel (18) is fixedly attached to the signal conductor (1a) of the coaxial cable either through a signal sleeve (16) for a replaceable inner contact assembly, or directly for a dedicated unit. An inner contact plunger (20) received in the plunger barrel has a contact portion (20c) biased outwardly to extend a selected amount beyond the ground plunger (30) in a given direction by a first spring member (24) while a second spring (36) biases the ground plunger outwardly in the given direction to a preset location.

Abstract: A mounting device (10) is shown particularly adapted for adjustably mounting vectorless test heads for circuit board components and the like to be tested for processing faults of component pin connections with traces of a circuit board in which the components are mounted. A U-shaped bracket (18) is lockably received on a rail (2) and has first and second projections (18d,18e) slidably received through a respective slot (16c,16d) of a leg (16) of a T-shaped member (12). The base leg (14) of the T-shaped member (12) is connected to one end of a pin member (24) which slides through a bore (18p) in one arm (18b) of U-shaped bracket (18) and is threadingly received in a threaded bore (18n) of the other arm (18a) of the U-shaped bracket (18). Rotational movement of the pin member (24) causes T-shaped member (12) to move in a Z direction to permit precise locating of a test head (30) mounted on the base leg (14).

Abstract: A plurality of ice cream cone nesting sites (14) are formed on the base wall (12,12') of a carrier (10,10'). Each nesting site is formed by a nesting wall configured as a truncated cone with its diameter decreasing as the distance from the base wall increases. The bottom wall is spaced above a supporting surface on which the carrier may be placed by feet (22,22') extending downwardly from the bottom wall to facilitate grasping and handling. A lip (28) may be formed around the outer perimeter of the bottom wall to provide spill containment and to enhance gripping of the carrier.

Abstract: A self-locking and threaded bone tack screw device (10) for fixing and retaining tissue grafts and synthetic membranes directly to a maxillofacial bone graft site. The tack has an oversized cylindrical dome shaped head (14) for retaining the tissue and synthetic membrane to the bone graft site and a hexagonal recess (14a) for easy insertion and removal of the device. The tip of the device incorporates a sharp pin point (12a) to easily pierce the tissue and membrane and initially penetrate into the bone graft site. A locking flange (12c) locks into the bone graft site in a single direction. A self-tapping screw thread (12f) is provided for driving the pin point tip into the bone graft site. Incorporation of the self-locking pin point tip in series with the self-tapping thread allows the hexagonal tool driven bone tack to be easily inserted and removed from the graft site without compromising its fixation.

Abstract: Electrical contact material made from intimate mixtures of silver powder and a powder of a second phase material is shown in which the powder of the second phase material is milled to produce a selected grain distribution of approximately 90% less than 7-10 microns, approximately 50% between 2 and 5 microns and approximately 10% less than 0.8 to 1.0 microns. The powder of the second phase material is added to a silver salt solution, ammonium hydroxide and hydrazine hydrate to form a precipitate of second phase material particles covered with silver. For applications in which the particles need to be free flowing the particles are compacted together without any binder, broken into chunks and milled to provide granules. In one embodiment homogeneously doped tin oxide particles are disclosed in which tin oxide and the oxide of the dopant are dissolved in nitric acid to produce finely dispersed tin oxide and dopant oxide. The oxides are calcined and ground to the selected grain size distribution.

Abstract: A bone particle collecting unit (30) has first (32) and second (34) interfitting housing members capturing a cylindrical screen basket assembly (64). Bone particle containing effluent from a surgical site is received through a port (40) in the first housing member (32) into the screen basket assembly (64). Suction is applied from a port (56) in the second housing member (34) to remove liquid which passes through the screen basket assembly. The screen basket assembly (64) includes a disc (66) which frictionally receives one end of a cylindrical screen (70) with the other end o the screen received about a rib (42) formed in the first housing member (32). Disc (66) of the screen basket assembly is received on guide ribs (58) to seat the assembly in the second housing member (34).

Abstract: A head protector (10, 10') is shown in certain embodiments, having a plurality of rupturable, closed, pressurized, fluid filled cells (20) each having a rupturable common wall with a low pressure, empty cell (22) between first and second liners (14,16) and with optional cloth inner (18) and outer liners (12). In a second embodiment one or more layers of cushioning material has spaced apart, generally uniformly sized, closed fluid cells (24) intended to withstand selected levels of impacts without rupture. In other embodiments (40, 40', 40", 40'") a cushioning layer of open cell, visco- elastic resin is used with or without a load spreading outer layer of cross-linked, closed cell resin. Fabric covers (46,50) are shown for encapsulating the protector using openable/closable fasteners (48,52).

Abstract: A water balloon target game for bursting a water filled balloon above a game participant includes a frame of base support members (30, 32), a front and a side participant protector screen (36,38), a plurality of water balloon support members (12, 12a, 12b), a water balloon support seat (14), and an impact activating balloon bursting device (20) with an associated connecting rod (24) which mounts a cocking pin (22) at one end and a target (26) at an opposite end exterior of the frame. The base support members surround a conventional seat (not shown) and provide attachment for the protector screens by hook clips (34) at the front and target sides of the frame. The balloon support seat (14), of a predetermined size and adapted to support a variety of sizes of water balloons, is connected to the balloon support members and is centered above the seat which is occupied by the game participant. In operation, the balloon bursting device is cocked and a filled water balloon is placed on the balloon support seat.

Abstract: A maxillofacial anchoring and distracting system (10) is shown for lengthening the alveolar and small craniofacial skeletal bones by distraction osteogenesis. The distraction system includes a base plug (12), an internally and externally threaded anchoring screw body (14), a distraction jack screw (16) and healing screw (18). The base plug is press-fit into an osteotomy and acts as a baseplate to resist and transfer force received from the distraction jack screw to the subperiosteal corticotomy callus. The application of distraction force to the subperiosteal corticotomy via the distraction jack screw is resisted coronally by the anchoring screw body. Once the desired monofocal distraction osteogenesis has been completed, the maxillofacial anchoring and distraction system can be removed and easily replaced with an optimal length endosseous dental implant.

Abstract: A converter assembly for converting a dental implant having a threaded bore is shown having a cylindrical converter pin (22) with one end portion (24) threaded for reception in the threaded bore of the inplant. An opposite end portion (26) is formed with a locking taper which is receivable in a bore (34) of an abutment member (30) having a matching locking taper.

Abstract: A unitary cover (32,32') for placement over a baseboard heater is shown having an offset portion (40) with a series of spaced apertures (42) for convection and a front panel with a J-shaped section (45,46,48) at the bottom thereof which cooperates with a tab (36) formed on a top platform (34) for snapping on to a baseboard heater housing. According to one embodiment the cover is adaptable to different sized baseboard heater housings by removable portions of upper and lower J-shaped sections (46) or the entire J-shaped section (48). Further, individual short portions of the J-shaped bights and short legs are removable to accommodate brackets, trim accessories and the like. A modified cover (32") has an additional tab (37) which cooperates with the tab (36) formed at the rear of platform (34") for snapping engagement with the top portion of the baseboard heater housing.

Abstract: Electrical contact material made from intimate mixtures of silver powder and a powder of a second phase material is shown in which the powder of the second phase material is milled to produce a selected grain distribution of approximately 90% less than 7-10 microns, approximately 50% between 2 and 5 microns and approximately 10% less than 0.8 to 1.0 microns. The powder of the second phase material is added to a silver salt solution, ammonium hydroxide and hydrazine hydrate to form a precipitate of second phase material particles covered with silver. For applications in which the particles need to be free flowing the particles are compacted together without any binder, broken into chunks and milled to provide granules. In one embodiment homogeneously doped tin oxide particles are disclosed in which tin oxide and the oxide of the dopant are dissolved in nitric acid to produce finely dispersed tin oxide and dopant oxide. The oxides are calcined and ground to the selected grain size distribution.

Abstract: A continuous particle treating system (10) is shown having an elongated treatment chamber (12) with a slurry supply network (14) connected to the inlet end (12a) of the chamber and an outlet network (16) connected to the outlet end (12b) of the chamber. The supply network includes a loading char (24) coupled to a slurry container (18) forming a main circulation loop and a by-pass conduit (32) connected in parallel with the loading chamber forming a by-pass loop with the slurry container. High pressure liquid (36) is used to pressurize the treatment (12) and at selected times during an operational cycle, the loading chamber (24). A plurality of valves (V1-V7) are interconnected and sequenced to maintain slurry circulation at all times and to intermittently separate the loading chamber (24) from the circulation path and to pass on the slurry in the loading chamber into the treatment chamber (12).

Abstract: A two part abutment system (50,50' and 64,64',64") is shown for use with a root member (10) implanted in the alveolar bone (16) particularly suited for use when the root member (10) is not positioned sufficiently deep within the the bone to thereby expose portions of the root member. The abutment member (50,50') is formed with a root member shoulder receiving seat in communication with a bore having at least a portion with a non-circular surface. A post (64,64',64") having a non-circular head (66) having a shape conforming to that of non-circular portion of the bore and a shank (68) extending therefrom is received through the bore into the socket (28) of the root member (10). Suitable locking means such as cement is used to fix the abutment to the root member. An adaptor (70, 70') is shown for converting a root member (74) having a threaded bore (72) for use with the two part abutment system of the invention.