B - Operations – Transporting – 66 – B
Patent
B - Operations, Transporting
66
B
B66B 1/14 (2006.01) B66B 1/46 (2006.01) H01H 3/12 (2006.01) H03K 17/96 (2006.01) H03K 17/965 (2006.01)
Patent
CA 2128447
ABSTRACT OF THE DISCLOSURE An electronic push button assembly, used as a call and signal generator in elevator controls and installed, via rear surface attachment, in a service control station or indicator board at floor stops and in elevator cars, consists of a push button guide, carrier plate, optical acknowledgement means and an electronic portion, wherein the mechnical portion of the push button assembly includes a plunger element, guided and limited for movement by an illuminated ring plate which, by means of an elastic pressure cap, pressure activity t pressure sensitive resistnace FSR when the push button assembly is activated, with the change in resistance of the FSR, resulting from the mechanical pressure, produces a potential change within a voltage divider whereby, via a trigger/preamplifier, a switching transistor is activated and in turn switches on a corresponding load, a potential separation being utilized by the load, via a contact to complete the acceptance switching circuit, with the basic mechanical construction permitting differing variations relative to design and function.
Sandhou Surjit S.
Shea Timothy S.
Ag Inventio
Riches Mckenzie & Herbert Llp
LandOfFree
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