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:
Nov. 11, 1980
Filed:
Apr. 27, 1979
Tsuyoshi Satoh, Inazawa, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A plurality of identical signal delay elements are disposed within a hoistway one for each landing floor and cascade connected to a signal generator. Each delay element is located at its position where a signal from the signal generator appears at its output with a time delay corresponding to the associated floor. The delayed signal is detected by a signal detector disposed on an elevator car stopped on or traveling past any of the floor. A time delay measurement device counts clock pulses occurring between the detected signal and the signal from the signal generator to determine a time delay between both signal and therefore the floor on which the elevator car stops, or past which it is traveling.