Elevator call button/annunciator assembly and circuit

Abstract

A vibration-resistant elevator call button/annunciator assembly comprises: a switch housing defining an interior cavity and apertures opening into the cavity; a switch mounted in the housing; a switch actuating member movably disposed in the cavity; a resilient member for urging the actuating member into an unactuated position in the cavity; and, a light module for illuminating the actuating member mounted through a wall of the housing. The light module preferbly snap fits in an aperture in the housing, the wedge-based lamp being press fitted into a receptacle in the module. An electrical circuit for utilizing the modular assembly as an elevator call button/annunciator assembly comprises: a voltage stepdown transformer having a primary winding adapted for coupling to an AC mains supply and having a secondary winding for developing an output voltage at a first level; a switch coupled to the secondary winding; and, a lamp mounted in a switch housing and coupled to the switch for illuminating a call button/annunciator responsive to actuation of the switch, the lamp having a voltage rating greater than the first level. The switch may be actuated by engagement of the call button. The lamp may be a T-3 1/4 wedge-based lamp, having a voltage rating greater than the output voltage lelvel.

Dependencies are inferred from the claim text.