The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 02, 1982
Filed:
Jun. 10, 1980
Wing C Quan, Waldwick, NJ (US);
Richard H Ludwig, West Caldwell, NJ (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
An elevator system having a notching floor selector which is notched or advanced by notching signals developed as the elevator car moves through the hoistway, to cause the selector to store information relative to the actual position of the elevator car. The notching signals also actuate first and second counters, one of which operates a non-volatile memory. The memory count is compared with the count on the remaining counter, and when they are not equal a reset operation is initiated which includes resetting the notching floor selector and counters to represent a predetermined terminal floor, and the generation of auxiliary notching signals, all without moving the elevator car. When the memory and counter have the same count, the auxiliary notching signals are terminated, and the floor selector system is back in synchronism with the actual position of the elevator car.