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:
Jul. 06, 1999
Filed:
Jun. 28, 1996
Marc Frederic Chevilliard, Penang, MY;
Stephen Roberts, Penang, MY;
Gregory Milton O'Seep, Penang, MY;
Frederic Bruno Delmas, Penang, MY;
Lap Yick Lee, Luk Yeung Sun Chuen, HK;
Otis Elevator Company, Farmington, CT (US);
Abstract
A car door lock for locking elevator car doors when the elevator car is in transit and/or outside the door zone includes a solenoid activated lever that pushes a lock arm to open. The solenoid is activated in two phases to reduce associated noise. The car door lock includes an operator switch which signals the door controller that the door lock is opened and the elevator car door is free to be opened. The car door also includes a safety switch which signals the door controller that the elevator car door lock is closed.