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:
Apr. 20, 1999
Filed:
Jul. 11, 1997
Ali Bozorgzadeh, Springfield, MA (US);
Troy R Chicoine, Granby, CT (US);
Frank E Dyer, Enfield, CT (US);
John J Faup, Simsbury, CT (US);
Jesse R Richter, West Hartford, CT (US);
Frank P Morrisino, East Longmeadow, MA (US);
Wayne L Virkler, Vernon, CT (US);
Otis Elevator Company, Farmington, CT (US);
Abstract
Microprocessor-based car door locking system includes an electromechanical door lock for elevator car doors having a latch-type rotary solenoid to move a plunger into locked and unlocked positions. In the locked position, the plunger engages a bracket mounted on the elevator car door. The door lock also includes a controller that integrates the door lock into the elevator system and provides failure management for the door lock. The door lock of the present invention does not require power during either the locked or unlocked state.