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:
Feb. 19, 1985
Filed:
Aug. 30, 1983
Tac H Nguyen, Denville, NJ (US);
Alan L Husson, Hackettstown, NJ (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
Methods and apparatus for providing a desired terminal slowdown speed pattern as an elevator car approaches a terminal floor in the terminal slowdown zone. Markers are fixedly spaced in the zone, with their spacing being a direct function of their distance from the terminal floor. The markers are detected as the elevator car proceeds past them towards the terminal floor, and a train of signals T are produced having values responsive to the marker-to-marker time, i.e., the elapsed time between successive detections of markers. The velocity V of the elevator car is also detected, and the terminal slowdown speed pattern is provided as a function of the product of V and T, as scaled by a constant which includes the square root of the desired deceleration rate.