Abstract: Apparatus and methods for facilitating insertion and maximizing resiliency, reliability and conductivity of button contacts in button board type circuit interconnectors.

Abstract: Connectors are provided for propagation of electrical signals in a plurality of closely spaced propagation paths, such as between circuits connected to conductive pads of circuit boards, each circuit presenting a certain characteristic impedance at a pad connected thereto. For example, each connector includes a plurality of resilient and electrically conductive signal-propagating interconnect means having opposite ends engageable with conductive pads on a pair of the circuit boards. The interconnect means are supported by insulating means of a support structure which also provides conductive ground means in adjacent relation to the conductive interconnect means. The conductive ground means are arranged for connection to grounding elements of the circuit boards.

Abstract: A sheetmetal fastener device to be inserted into and mounted on the interior of a slotted hollow support member. The clip is self-retained and capable of supporting a cable strap or similar means which in turn will maintain one or more elongated objects, such as cables or conduits, in fixed relation to the support member.

Abstract: A pulley is provided with a bi-ended, hollow tube bearing, bracket mounting assembly. The bearing tube is slit from one end to the other, and one of the lips thus formed is displaced inwardly in chordal relationship to the balance of the bearing along all or a portion of the bearing axial length. This displaced lip catches drippings from a lubricant-impregnated bushing, and returns them to the bushing.