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:
Oct. 07, 2003
Jae-hyuk OH, Tolland, CT (US);
Robin Mihekun Miller, Ellington, CT (US);
Richard E. Peruggi, Glastonbury, CT (US);
Samuel Wan, Simsbury, CT (US);
Anthony Cooney, Unionville, CT (US);
Adriana Bacellar, Glastonbury, CT (US);
Pei-yuan Peng, Ellington, CT (US);
Jae-Hyuk Oh, Tolland, CT (US);
Robin Mihekun Miller, Ellington, CT (US);
Richard E. Peruggi, Glastonbury, CT (US);
Samuel Wan, Simsbury, CT (US);
Anthony Cooney, Unionville, CT (US);
Adriana Bacellar, Glastonbury, CT (US);
Pei-Yuan Peng, Ellington, CT (US);
Otis Elevator Company, Farmington, CT (US);
Abstract
A brake mechanism () for an elevator () is activated in response to an electronic control signal to prevent movement of an elevator car () under predetermined conditions. The brake mechanism is preferably a safety mechanism () and does not require a governor sheave, a governor rope, or a tension sheave. The safety mechanism in one disclosed example utilizes a solenoid actuator () and an electric motor () and gear box assembly () to move safety wedges () into engagement with a guide rail () to stop the elevator car (). The safety wedges () are held in a non-deployed position during normal elevator operation. If there is a power loss or if elevator car speed exceeds a predetermined threshold, an electronic control signal activates the safety mechanism () causing the solenoid to release, which causes the safety wedges () move in a direction opposite to that of a safety housing () mounted for movement with the elevator car (). Angled surfaces of the safety housing () force the safety wedges () into engagement with the guide rail (). The safety mechanism () can be selectively reset from a remote location.