Abstract: Wire terminal clamp having a wire receiving means situated in a surface, a wire clamping member and a means for moving the wire clamping member across the surface, so that when the wire clamping member is moved in one direction a wire end can be clamped and when the wire clamping member is moved in an opposite direction any wire end that is clamped can be released.

Abstract: A controller including a processor is coupled to a transceiver head pair respectively operative as a transmitter and as a receiver of infrared energy to controllably project a beam of infrared energy therebetween through a projected region. The controller is operative to de-sensitize the beam against potential electrically interferring effects present along the beam path. Plural alarm thresholds are operator selectable to provide enhanced confidence detection, and particularized signal indications are provided to readily and quickly identify possible alarm and trouble conditions.

Abstract: A modular transceiver head including cooperative cover and base members operable as a transmitter or as a receiver of infrared energy. A controller including a processor is coupled to a transceiver head pair respectively operative as a transmitter and as a receiver of infrared energy to controllably project a beam of infrared energy therebetween through a protected region. The controller is periodically operative in a self-test mode to reduce the intensity of the projected-beam to simulate a smoke condition. Plural alarm thresholds are operator selectable to provide enhanced confidence detection, and particularized signal indications are provided to readily and quickly identify possible alarm and trouble conditions.

Abstract: A modular transceiver head including cooperative cover and base members operable as a transmitter or as a receiver of infrared energy. The cover member includes a window defining a comparatively wide field of view in azimuth and in elevation. An optical train including a gimbaled specular member that is mounted to the base member readily allows both rough and fine adjustment of the pointing direction of the specular member anywhere within the field of view of the cover member window. A controller including a processor is coupled to a transceiver head pair respectively operative as a transmitter and as a receiver of infrared energy to controllably project a beam of infrared energy therebetween through a protected region. The controller is operative to de-sensitize the beam against potential electrically interfering effects present along the beam path. The controller is periodically operative in a self-test mode to reduce the intensity of the projected-beam to simulate a smoke condition.

Abstract: Apparatus and technique for providing series electrical connection between a conductor and an electrical component or unit in a rapid and automatic manner without the necessity for manual manipulation or preparation of the conductor. A pair of spaced walls are provided each containing a pair of wire-guiding slots through which a wire can be looped, with the loop end extending outside one of the walls. A pair of insulation displacement connectors is provided between the walls with wire receiving grooves in alignment with the slots in the spaced walls. A knife edge is provided between one of the walls and the connectors. A cover or other element is fitted over the walls and, during closure, causes the wire to be forced into the connector grooves to make electrical connection with the respective connectors, and also causes severing of the loop end of the wire by the knife edge, thereby to provide a series electrical connection.

Abstract: An optically-based coded card identification system is provided in which a card having an access code defined by adjacent differently-polarized elements used in a transmissive or reflective mode is interrogated through a deep red or near infrared transmissive filter as the card is pased by a source of illumination. The use of polarization coupled with the adjacency of the differently-polarized elements makes the code nearly invisible to the naked eye, with the code being made more invisible due to the low visible light transmission of the filter on the face of the card. In one embodiment, coding for the cards is provided by overlying layers of material polarized in different directions, with portions of the layers provided with offset apertures so that light through an aperture in one layer is polaried by an unapertured portion of the adjacent layer immediately thereunder.