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. 18, 2009
Filed:
Sep. 03, 2004
Gary Copsey, Gien, FR;
Gary Copsey, Gien, FR;
Otis Elevator Company, Farmington, CT (US);
Abstract
A detector of foreign objects, and particularly fingers, between the doors and the contiguous walls of landing and car openings in an elevator with glass car and landing doors includes a light beam emitter and a receiver. The emitter, which is located near an opening frame edge of the car, emits a light beam that extends transversally across the car and landing glass doors from the vertical car opening frame edge to the opposite vertical landing frame edge. The receiver, which receives the emitted light beam, is adapted to detect any obstacle to the light beam and to order the simultaneous halt and reversal, as required, of the car and landing doors.