Abstract: A dielectric insert for retaining a plurality of electrical contacts in an electrical connector. The insert (10) includes passages (15) having therein opposing radially deflectable contact retaining fingers (11) integral with the insert (10). The free ends (12) of the retention fingers (11) face each other, thereby defining a cavity for captivating the enlarged portion (25) of a contact. The radially deflectable fingers (11) allow a contact to be inserted and removed from either end of an electrical connector (1).

Abstract: A gage for measuring concentricity between a bore and a countersunk valve seat, said gage having a stem for insertion into the bore and a partially-spherical surface (24) on a spindle member for engaging the valve seat. The spindle member is rotated through 180.degree. to obtain the measurement, while a pair of gaging circuits indicate respective clearances between an upper extension of the stem and the spindle member at the theoretical center of the partially-spherical surface.

Abstract: A pair of mateable units with polarizing means for controlling mateability of the units comprising a member rotatably mounted on each of the units one of the members having an extension of predetermined shape and the other member having a recess of predetermined complementary shape for receiving the extension on the one member. The members each have a slot in one end for receiving a screw driver to rotate the members to adjusted position without removing, resetting and reassembling small components.

Abstract: A connector with a plurality of filter contact terminals having a ground wafer molded from plastic material and plated with metal and having integral spring tines for engaging the filters on the contact terminals to provide an electrical connection. The ground wafer may be seated in a cup-shaped ring made of metal and including a series of integral spring members formed in its outer circumference for engaging the shell to provide good connections for the filters.

Abstract: An altitude compensated vacuum control system for regulating the vacuum servo mechanism of an internal combustion engine of the type having a distributor with a vacuum servo controlled advance mechanism incorporating a positive stop for maximum spark advance, a carburetor to provide a source of vacuum to operate said vacuum servo mechanism and a vacuum control valve assembly for regulating the vacuum servo mechanism of said distributor. The vacuum control valve assembly receives a spark port vacuum signal from the carburetor to maintain a predetermined vacuum spark advance as the engine begins to accelerate.