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. 02, 1993
Filed:
Apr. 03, 1991
Applicant:
Inventors:
William G Sheridan, Southington, CT (US);
Edward D Reiskin, West Hartford, CT (US);
Assignee:
Otis Elevator Company, Farmington, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B66B / ; B66B / ;
U.S. Cl.
CPC ...
187105 ; 187109 ;
Abstract
The governor ropes on an elevator are actuated by an emergency tripping system when motion away from a landing zone of the car is detected while the car doors remain open. If the elevator controller receives a 'door open' signal and a 'car moving out of landing zone' signal concurrently, a solenoid tripper is actuated which causes the governor rope blocks to set on the governor ropes thereby activating the car's emergency brakes. Conventional governor actuation systems can be retrofitted with the solenoid tripper of this invention.