Abstract: An electrical connector is provided for electrically interconnecting the conductive terminals of a flat electrical circuit-bearing structure such as a circuit board with a backplane or the like. The connector includes a housing having a slot, into which the flat electrical circuit-bearing structure is inserted, and a carrier mounted for reciprocal movement in the slot to move the flat structure as it is inserted. A contact strip mounted on the carrier moves with the carrier and also is movable transversely thereof by a cam action to engage the flat structure's conductive terminal as the flat electrical structure is inserted. A resilient portion of the contact strip extends from the carrier to another portion fixed in the housing and urges the carrier outwardly of the slot and into abutment with the inserted electrical element.

Abstract: A low pressure selector for communicating therethrough fluid from the lower pressure source of a pair of pressure sources includes a housing with input ports for connection to the pressure sources and an output port. A piston member is mounted within a cavity, advantageously formed by walls of the housing, for reciprocating movement therein in response to pressure supplied from the pair of pressure sources to the input ports. Sealing members provided on the piston member cooperatively operate with the walls of the housing cavity and the piston member, to effectuate communication of fluid from the lower pressure source to the output port. The low pressure selector is advantageously employed in a vehicle pneumatic brake system to communicate the fluid from the lower pressure source of first and second sources of supply pressure of the system to a low pressure responsive monitor which warns the operator of the vehicle of a drop in supply pressure from either source below a preset minimum.