Abstract: A game which may be played by two or more persons includes a playing board and a pair of dice. The board comprises three concentric play areas, the outer two of which are divided into arcuate sections. The central play area designates a type of dice which is to be used with the particular game board. The various play areas are provided with indicia to indicate an appropriate payoff rate to be associated with that area. A number of variations of the game board are possible, each of which is to be played with particularly shaped dice.

Abstract: A low inertia synchronous induction motor for driving a daisy wheel printing element comprising a rotor assembly including an elongated motor shaft, a first laminated drum-shaped pole piece mounted concentrically on the shaft, second and third laminated cup-shaped pole pieces concentrically mounted on the shaft at either end of the drum-shaped piece and outwardly facing therefrom, a common number of axially-oriented, evenly spaced teeth formed on the respective circumferences of each of the pole pieces, the teeth of the second and third pole pieces axially aligned with each other and staggered with respect to the teeth of the first pole piece, a first washer-shaped, axially-magnetized, rare earth magnet mounted concentric with the shaft and sandwiched between the first and second pole pieces, and a second washer-shaped, axially-magnetized, rare earth magnet mounted concentric with the shaft and sandwiched between the first and third pole pieces so that its magnetic field is in opposition to the field of the f

Abstract: A slip ring for use in a high voltage system, such as a computerized axial tomography system, including the use of insulating gas, to fill a sealed cavity between a rotor and a stator to maintain the electrical integrity of the slip ring.

Abstract: A rotary coaxial assembly comprises an external and an internal socket which is lined with a conductive louvered band and which mates with an external and an internal pin. The fit between the sockets and the pins are such that a first coaxial cable which is attached to the external and internal sockets may rotate as a unit with respect to a second coaxial cable which is attached to the external and the internal pins.

Abstract: A slip ring for use in a high voltage system, such as a computerized axial tomography system, capable of coupling power in a 100-200 KV range at speeds up to 200 rpm, including the combined use of insulating fluid, dielectric barriers, Faraday shielding and semi-conductive material to maintain the electrical integrity of the slip ring.

Abstract: A socket wrench comprises a ratchet head which is removably held in an aperture in the forward end of a ratchet handle. A knurled drive ring allows the ratchet head to be used when detached from the handle and the handle itself is hollow and receives a tray which is dimensioned to hold a plurality of sockets. Access to the sockets is obtained by withdrawing the tray from the handle.

Abstract: A lightweight low reluctance rotor for a motor comprises a conductive pattern of a plurality of side-by-side coils formed on a flexible printed circuit board. The flexible board is rolled into a plural layer cylindrical drum and means are provided to interconnect non-adjacent coils to form a desired winding pattern.

Abstract: A slip ring mounted in a buoy is used to transmit power from a generating vessel to an offshore installation. The vessel is moored to the buoy and the slip ring acts as an electric swivel allowing the vessel to weathervane around the buoy as environmental conditions may require. The slip ring conducts high voltage three phase power and an open ring stack allows circulation of high dielectric insulating oil therethrough. The insulating oil allows the ring stack to have smaller dimensions than would be possible if an air dielectric were used. Access ports and viewing windows enable maintenance to be performed on the ring without removing the outer housing.

Abstract: This invention relates to a potentiometer with a digital display indicating the position of the potentiometer slider. In a known potentiometer of this type, a mechanical multidigit counter is mounted outside the potentiometer housing on the shaft carrying the slider. However, since the counter is mounted on the potentiometer shaft proper, the potentiometer must be inconveniently mounted in an apparatus at a point at which the counter can be read. Another disadvantage of the known potentiometer results from the fact that restrictions exist for the scale of the counter. The present invention provides a potentiometer of the above-specified type which is of simple design and is more versatile than known potentiometers. The advantage of the potentiometer according to this invention is that the display means can be mounted at a point remote from the potentiometer.

Abstract: A hexaflexagon or an interchangeable face device is made by first printing a desired pattern on both sides of a sheet of card stock. The printed sheet is then die cut to form a series of parallel rows of zigzag slots. The slotted sheet is then laminated on both sides with a clear, flexible sheet material such as mylar forming a sandwich. The sandwich is then cut to form rows of alternating triangles. A triangle row is then folded and the two end triangles of the row adhered together to form the hexaflexagon.

Abstract: A drumstick comprises a tip, a shank and a cap. The tip includes a light emitting diode and electrical leads connect the diode to a power source housed in a cavity formed between the shank and the cap. Threading the cap onto the shank effects a completed circuit including the power source and the diode. The motion of the lit stick tip enhances the rhythmic feelings contributed by the drummer to a musical group.

Abstract: The rpm of a rotary dresser wheel is maintained in a fixed ratio to the rpm of a grinding wheel. The rpm of the grinding wheel is increased to maintain the surface speed of the grinding wheel constant as the grinding wheel wears due to use.

Abstract: Disclosed is a butterfly valve comprising sealing means for a movable valve member in the form of a resilient high temperature destructible sealing ring and a resilient high temperature indestructible seating ring, both of which are normally preloaded into radial sealing engagement with the movable valve member. The high temperature destructible seating ring is the primary seal and the high temperature indestructible seating ring being a backup seal in one direction of flow and the high temperature indestructible seating ring is the primary seal in the opposite direction of flow. Upon destruction of the high temperature destructible seating ring, the high temperature indestructible seating ring is so retained and configured to provide bidirectional seating.

Abstract: A power connector for a printed circuit board comprises a plastic body and a conductive plate disposed on the top surface thereof. Conductive pin contacts pass through the body and are attached by solder to the conductive plate. The pins connect to the printed circuit board and a power lead may be coupled to the conductive plate by a screw.

Abstract: A cycle control for plastic injection molding machines. All time-responsive machine controls are eliminated by initiating or terminating machine functions in response to actual, physical properties experienced by the machine or by the plastic or in the mold, rather than in response to elapsed-time intervals. Means are provided for changing the injection pressure to the holding pressure when the pressure in the mold cavity reaches a predetermined pressure, means are provided for ending the holding pressure and initiating the cold/cure portion of the cycle in response to actual, physical conditions of the plastic in the mold, such as pressure or temperature, and means are provided for opening the clamp to eject the molded part and thus end the cold/cure portion of the cycle in response to actual, physical properties of the plastic in the mold, such as pressure or temperature. The machine cycle is thereby completely independent of time, and cycle time may be minimized.

Abstract: A game board comprises a plurality of adjacent irregularly shaped playing areas, each area having sides in common with at least three other areas. Each of two players, in alternate turns, places chips into areas which are unoccupied and which do not have a common side with an area which is already occupied by a chip belonging to the player then placing a new chip. When it is no longer possible for a player to place a chip according to the above rules, that player places his chip into an area which does have at least one side in common with an area which also contains his chip. After so placing a chip, the player removes his chips from all those areas which have a side in common with that area into which his chip has just been placed. The first player to have only one chip left on the board wins the game.

Abstract: A bidirectional butterfly valve comprising sealing means for a movable valve member in the form of a seating ring and retaining means therefor cooperatively configured to maintain bidirectional axial sealing engagement with the retaining means and radial sealing engagement with the movable valve member at normally encountered or cryogenic temperatures.

Abstract: A connector for terminating a flat cable comprises a contact support, a pressure member, and a strain relief. A metal clip on either end of the connector acts as a latch to maintain the three elements in a single package and to transmit the forces imposed by the strain relief directly to the contact support. A detent formed on the contact support provides a two-position catch for the latch. A protuberance formed on the clip bites into the end wall of the pressure member to prevent withdrawal of the clip from a slot formed in the pressure member and to allow displacement of the end wall in response to flexure of the clip.

Abstract: The driving stud of a socket wrench includes an aperture through which a detent protrudes to lock a socket thereon. A push bar mounted in the head of the socket wrench is notched to receive the detent and may be shifted to allow retraction of the detent and release of the socket. The notch is formed with a trough to prevent twisting of the push bar with respect to the axis of the aperture and to insure the proper seating of the detent on two surfaces of the trough.