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The Inventio Ag patent solves the following problem:
The invention relates to an electronic push button or push button assembly for use as a call or signal generator, especially in the elevator control, for installation, with rear face greeting, a service station or sign board on the floor and the elevator car with a push button guide, carrier plate, means for optical acceptance or recognition, and an electronic part.
Our analysis of this patent is as follows:
Inventio Ag’s patent US 5477942 A deals with Push button assembly.
An electronic push button assembly, which is used as a call and signal generator control elevator and installation, through the back face greeting, a service station or a sign board on the floor and stops the elevator vehicles, comprising guiding a push button, a carrier plate, an optical recognition device and an electronic part, where the mechanical part of the push button assembly includes a plunger element, guided and limited movement through an illuminated ring plate, with an elastic pressure on the cap, the pressure activates a FSR pressure sensitive resistance when the push button activation assembly, with changes against the FSR, resulting from mechanical pressure, a potential change in a voltage divider which, by a factor / preamplifier, a switch transistor activate and instead move to a corresponding burden, a potential separation used in the load, through a contact, completing the receive circuit transfer, with the basic mechanical construction allow various differences relative to design and function.
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