B - Operations – Transporting – 66 – B
Patent
B - Operations, Transporting
66
B
340/105, 364/23
B66B 1/28 (2006.01) B66B 1/46 (2006.01) B66B 3/00 (2006.01) B66B 5/02 (2006.01) H03K 17/96 (2006.01)
Patent
CA 1178724
Attorney's docket 7086 CAN INVENTOR: THOMAS ITEN INVENTION: CONTACT-CONTROLLED CAPACITIVE SWITCHING APPARATUS ABSTRACT OF THE DISCLOSURE A contact-controlled capacitive switching means utilized as a floor or cabin calling transmitter for lifts or the like is designed such that travel or drive commands for the lift are prevented from being generated by the action of heat or, if generated, from being further transmitted to a lift control system. Therefore, a thermal circuit breaker is interconnected between an actuating element, such as a contact button and a coupling member connected to an input of an oscillator. The thermal circuit breaker may be mounted directly at the contact button or at a mounting plate carrying the contact button. A further thermal circuit breaker is interconnected between an output of the switching means and a connection terminal of a signal transmitting line of the lift control system.
414875
Ag Inventio
Johnson & Hicks
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