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:
Aug. 03, 1982
Filed:
Dec. 27, 1979
Michael W Hmelovsky, Warehouse Point, CT (US);
Otis Elevator Company, Farmington, CT (US);
Abstract
An elevator system includes a microprocessor-based cab controller mounted directly on an elevator car, which controls the operation of the elevator door. Elevator door motion is commanded in response to the difference in actual door velocity from a desired, dictated door velocity in accordance with desired rates of acceleration and deceleration, and desired maximum velocity, acceleration and deceleration, the point at which deceleration is to begin, and a velocity at which decleration is to decrease. The disclosed invention provides a bench velocity, a final, slow velocity, by controlling the velocity at which deceleration is to decrease, so that the acceleration vs time of the profile exceeds the deceleration vs time of the profile by an amount resulting in the desired, final bench velocity. An exemplary elevator system, an exemplary microprocessor-based controller, and logic flowcharts for an overall door control program, illustrative of an environment of the invention, as well as details of the invention, are disclosed herein.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile