Abstract: This invention relates to device comprising a plurality of movable electrically conductive contacts each having at least one contact surface. The contacts are movable in guide paths in response to application of forces to the contact surfaces. Elastomeric biassing means engage the contacts and bias the contacts to oppose forces applied to the contact surfaces. The elastomeric biassing means preferably comprises a moulded element of elastomeric material bonded to the contacts and restraining the contacts from leaving the guide paths. The contact surfaces can then be provided on one side of said element and terminals for connection to electrical leads can be provided by the contacts at the opposite side of the element.

Abstract: This invention relates to a locking device having a latching element movable between a locking position and an inoperative position, operating means for moving the latching element, a blocking member movable to a blocking position for mechanically preventing the latching element from moving to its inoperative position. According to the invention, a plurality of thermally responsive elements are arranged or are individually bendable to form thermally responsive holding means for adopting a holding condition to temporarily hold the blocking member in the blocking position and, preferably, also to form thermally responsive safety means for normally adopting an inoperative condition.