Abstract: An electrical contact is provided for receiving a pin contact therein. It includes a receptacle having an elongate spring member positioned therein. A pair of resilient tabs having downwardly projecting contact points define the upper portion of the receptacle. The elongate spring member includes a pair of upwardly extending contact points. A pin contact is inserted between the tabs and the spring member. A projection extending from a side wall of the receptacle limits the deflection of the spring member upon insertion of the pin contact. A plurality of electrical contacts as described above may be incorporated within an insulator to provide a connector.

Abstract: The present invention relates to a portable air pump apparatus that will take in air and cause it to flow through a lower chamber, direct it up and into a centrifugal impeller rotating in an upper chamber, concentrate its flow and dispell it at a greater than atmospheric pressure. The direction and concentration of the air flow taken in is accomplished by a cooperating network of curved baffles and sealed chambers.

Abstract: A scabbler apparatus having a conventional reciprocated rod is provided with a bit secured to a shank member. A compression spring is adapted to urge the shank and rod upwardly while motive means is provided to drive the rod, shank and bit toward the surface of concrete, rock and the like and against the bias of the spring. A protective retainer and an exclusionary means is provided. This exclusionary means may be a boot, a wiper ring and with or without a one-way valve means. The compression spring is retained at its lower end by a support shelf, usually an inwardly formed flange of the retainer. A washer or ring engages or is carried by the shank of the bit and engages the top end of the spring to urge the shank, the attached bit and the reciprocated rod upwardly.

Abstract: An elongated electrical connector, elongated insulator block for holding several of the connectors and a jig or tool for assembling the block and connectors to a printed circuit board. The connectors are each provided with an intermediate mounting boss or plate with an opening that matches an opening in the side of the elongated block. The jig includes a series of movable claws which extend into the connector openings to align the connectors and drive them into matching apertures of a printed circuit board.

Abstract: A hermaphrodite housing assembly containing a plurality of positions for supporting a plurality of electrical connectors, secured captively in respective halves of the assembly for mating contacts positioned in opposite portions of the assembly.