Abstract: Safety edge switch (1) for power-driven equipment or power-driven doors, sliding equipment and so forth of vehicles, with a hollow profile made of an elastomeric material and having a mounting profile (2) and a shell part (3), in which hollow profile there is an internal body (4), the internal body part (4) and the shell part (3) having electrically conductive zones that, upon mutual contact, initiate a switching pulse that can be led to an interpretation unit. The mounting profile (2) is made electrically conductive and is electrically conductively connected to the internal body part (4) or the shell part (3).

Abstract: Electrical contact mat (2) with at least two plates (2a, 2b) arranged at a spacing from each other in the at-rest condition, which plates are fabricated in particular from rubber or polymers and made electrically conductive by the admixture of conductive substances such as carbon black, graphite, metal powder and the like, the spacing being established by one or more nonconductive spacers, and with a device for closed-circuit protection, which is operatively connected with the plates (2a, 2b), the spacers being designed as a substantially inelastic interlayer (2c), which has openings of such size that the inner surfaces of the plates (2a, 2b) make mutual contact when the contact mat (2) is under compressive load and thus form the switch of a tactile sensor (1) of the device for closed-circuit protection, the sensor (1) having an electrical connection (3) in parallel with the contact mat (2).

Abstract: A safety contact or switch hose having a plurality of electrically conductive projections which generate a switching pulse when coming into contact with one another.

Abstract: Electrical contact mat (2) with at least two plates (2a, 2b) arranged at a spacing from each other in the at-rest condition, which plates are fabricated in particular from rubber or polymers and made electrically conductive by the admixture of conductive substances such as carbon black, graphite, metal powder and the like, the spacing being established by one or more nonconductive spacers, and with a device for closed-circuit protection, which is operatively connected with the plates (2a, 2b), the spacers being designed as a substantially inelastic interlayer (2c), which has openings of such size that the inner surfaces of the plates (2a, 2b) make mutual contact when the contact mat (2) is under compressive load and thus form the switch of a tactile sensor (1) of the device for closed-circuit protection, the sensor (1) having an electrical connection (3) in parallel with the contact mat (2).

Abstract: Safety edge switch for power-actuated devices such as roller gates, roller grilles, lifting platforms and working platforms as well as for securing movable objects and machines having a hollow elastic profile, which exhibits, at least on its inner side, surfaces that are electrically conductive by virture of admixtures of conductive substances, such as carbon black, graphite and metal powder, mutual contact of the electrically conductive surfaces leading to a switching pulse. The hollow body exhibits in the interior at least two strip-like, electrically conductive projections and at least one opposing surface, likewise electrically conductive, guided along the hollow body, by which means contacting between the electrically conductive surfaces is improved. The use of multiple electrically conductive projections insures adequate electrical contact between the conductive projections and the opposed conductive surface even when the operating force is applied from various directions.

Abstract: A safety edge switch for power-actuated devices such as roller gates, roller grilles, etc., and lifting platforms, working platforms and the like, as well as for the guarding of machines or spaces, for example as safety flooring, with a hollow rubber profile (1) within which there is a knife-edge rib (5), the surface of the rib and the opposing surface of the hollow rubber profile being made electrically conductive and the mutual contact of the surfaces leading to a switching pulse. The requisite conductivity of the hollow rubber profile is achieved by virtue of the fact that the rib (5) and the main part of the hollow rubber profile (1) are made wholly electrically conductive, the conductivity arising through the admixture of conductive substances such as carbon black, graphite, metal powder and the like. The rib and the main part of the hollow rubber profile are insulated from each other by virtue of the fact that ordinary nonconductive rubber is present between these parts.