Abstract: A socket having an array of terminals adapted for insertion into a burn-in board is adapted to interconnect respective pins of a high pin density integrated circuit package to the terminals. The socket includes a lid with an array of holes for receiving the pins and registering the pins with underlying terminal openings and a cam mechanism actuable to move the lid relative to the terminals to cause the pins to make contact with the terminals within the openings. Mounting of the package on the socket and insertion of the pins into underlying terminal openings is accomplished with zero insertion force applied to the pins. Actuation of the cam mechanism causes the pins to contact respective terminals without deforming the pins.
Abstract: A door latch includes an elongated stationary case and a latch bolt mounted to reciprocate longtudinally in the case between outwardly extended and inwardly retracted positions. The latch bolt is driven between the two positions by a driver mechanically connected to the latch bolt and longitudinally movable within the case under control of first and second cams. The rotation of either cam will cause the driver to move against the force of a helical spring in direction to pull the latch bolt to an inwardly retracted position. A pushbutton key is mounted to a sidewall of the case and movable in direction into and out of the case to lock one of the cams against rotation. A pin, integral with and extending radially from said key, is received by a camming means on the other cam whereby rotation of the other cam will move the pin in direction to retract the key from the first mentioned cam. A detent in the case is held in position by the helical spring to frictionally engage the outer surface of the key.
Abstract: Improved storage apparatus for electric extension cords and the like that includes a reel for storing a power cord or pig tail, a second drum for storing the extension cord, and that further includes level wind apparatus which uniformly locates the extension cord on the second drum whereby long cords can be stored in a relatively small space without tangling.
Abstract: Disclosed are solderable fastener devices for mounting heat sinks and electronic device packages on circuit boards. The fastener includes at least one mounting member extending to the circuit board and adapted for soldering thereto. The mounting member spaces the fastener, heat sink and electronic device package above the surface of the circuit board. The fastener further includes attachment means for gripping the heat sink and attaching it to the fastener. Securing means are provided for affixing the electronic device package to the heat sink and the fastener above the surface of the circuit board.
Abstract: Unitary heat sink apparatus for use in removal of heat from a heat generating component is disclosed which includes a heat sink body formed by extrusion. Parallel fins extend outwardly a first predetermined distance for the heat sink body and are separated by a first predetermined number of grooves of a first predetermined depth and width. The ratio of the height of the fins to the width of the grooves is approximately four to one. The first predetermined number of parallel grooves are gang sawed to a second predetermined depth to provide a second and greater predetermined height to the parallel fins such that the new ratio of the second predetermined height of the fins to the width of the parallel grooves is increased to at least six to one. In another embodiment, the heat sink is then rotated ninety degrees and a second predetermined number of grooves are gang sawed at right angles across and through the parallel fins to provide a predetermined number of pins extending outwardly from the heat sink body.
Abstract: Unitary heat sink apparatus for use in removal of heat from a heat generating component is disclosed which includes a heat sink body formed by extrusion. Parallel fins extend outwardly a first predetermined distance from the heat sink body and are separated by a first predetermined number of grooves of a first predetermined depth and width. The ratio of the height of the fins to the width of the grooves is approximately four to one. The first predetermined number of parallel grooves are gang sawed to a second predetermined depth to provide a second and greater predetermined height to the parallel fins such that the new ratio of the second predetermined height of the fins to the width of the parallel grooves is increased to at least six to one. In another embodiment, the heat sink is then rotated ninety degrees and a second predetermined number of grooves are gang sawed at right angles across and through the parallel fins to provide a predetermined number of pins extending outwardly from the heat sink body.
Abstract: An electrically heated hose for providing heat only to the section of hose which contains an electrically conductive liquid therein includes a plurality of resistance heating elements positioned between inner and outer layers of electrically insulative material defining the hose wall and arranged to sectionalize the hose into individual independently heatable sections. Each heating element has a first terminal connected to a power source and a second terminal connected to at least one of a plurality of spaced electrically conductive members disposed on the inner layer and exposed to any electrically conductive liquid conveyed by the hose. A continuous electrical conductor exposed to any liquid in the hose extends along the entire length thereof in spaced relation to the plurality of conductive members and is connected the power source.
Abstract: Disclosed are methods and apparatus for effecting a selected pattern of fluid flow wherein a first fluid is caused to flow along the surface of a body and a second fluid is caused to flow out of a plurality of holes in the surface of the body. The holes are arranged in a pattern so that the flow of the second fluid creates a baffle to change the direction of flow of the first fluid. The pattern is a grouping of holes wherein the grouping may be a straight line or a helix around a tubular body. The holes are rectangular in cross-section to form a fan-shaped pattern in the fluid passing through the holes. The longitudinal axis of each hole does not intersect the center of adjacent holes.
Abstract: The leads of surface-mountable electronic device packages are protected against damage from inadvertent bending by storage in a two-piece cradle. A plurality of peripheral ribs interdigitate with the leads to maintain preferred lead orientation leaving the free end of each lead exposed for electrical contact from outside the cradle.
Abstract: A hand-held, motor-driven erasing machine which operates directly from the nominal wall outlet voltage and comprises a generally tubular housing having a front portion and a rear portion which are releasably attached together. A chuck tube is mounted for rotational movement within the generally tubular housing. A DC permanent magnet motor is operatively disposed within the generally tubular housing and includes a wire-wound armature surrounding and attached to the chuck tube, a commutator whose brush surface is positioned at a right angle with respect to the rotational axis of the DC motor, a permanent magnet assembly operatively surrounding the wire-wound armature. A rectifier device is operatively connected to receive the AC voltage from the wall outlet and provide a DC output to the DC motor. A switch assembly is operatively connected between the output of the rectifier device and the DC motor.
Abstract: Disclosed are methods and apparatus for controllably locking a shaft to a bearing surface moveable thereupon to permit or prevent axial movement of the bearing with respect to the shaft. In one embodiment an axially extending flap is formed in the shaft which is activated by a wedge to expand the diameter of the shaft and thereby lock the shaft to the surrounding bearing surface. In another embodiment a slot is formed in the bushing surrounding the shaft and the internal diameter of the bushing decreased with a wedge screw to lock the bushing to the shaft.
Abstract: A method and apparatus for providing serialization of printed circuit boards and flex circuits during the normal process of manufacture of the boards and circuits is disclosed and includes a print module which prints the serializing information on the surface of the photoresist material with a fluid, which blocks the passage of ultraviolet radiation, before the photoresist material is exposed to ultraviolet radiation through the photomask. If a negative-acting photoresist material is used, the serializing information is reverse printed on the surface of the negative-acting photoresist material. If a positive-acting photoresist material is used, the serializing information is printed on the surface of the positive-acting photoresist material.
Abstract: A bed tent with a base portion snugly fitted around a mattress and a canopy portion connected to the base portion along its lower periphery is supported in an upright position over the mattress to provide an enclosure having a bottom surface area substantially coextensive with the surface area of the mattress and an opening for ingress and egress.
Abstract: A motor vehicle is disclosed including an apparatus for preventing theft of a spare tire, including a tire rim forming an aperture, a spare tire mounted on the rim, a bracket, sling or cable lift for securing the spare tire and rim, a metal shaft securely affixed to the motor vehicle, a metal strap looping metal shaft, a shackle engaging the rim and both ends of the strap by passing through an aperture formed near each end of the strap and the aperture formed by the rim, and a locking device for locking onto both ends of the shackle.
Abstract: Alignment apparatus for receiving, aligning and retaining the pin connectors of an electronic component package in predetermined relationship is used to maintain proper alignment of the pin connectors with preformed holes or mounting pads on a printed circuit board or the like when the sub-assembly of a heat sink and an electronic component package is mounted on a printed circuit board or the like.
Abstract: A hub assembly comprising a driver telescoped within a driven member is disclosed. A plurality of elastomeric members are disposed between the driving and driven members within mating parallel semi-circular grooves in the opposed surfaces of the driving and driven members of the hub.