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:
Oct. 13, 1998
Filed:
Nov. 06, 1997
Michael C Lang, Naugatuck, CT (US);
Dat T Nguyen, West Hartford, CT (US);
Samuel C Wan, Simsbury, CT (US);
Richard J Ericson, Southington, CT (US);
Paul Bennett, Waterbury, CT (US);
Joseph A LeDoux, Plantsville, CT (US);
Fred J Lussier, Hebron, CT (US);
Philip H McCluskey, Manchester, CT (US);
David W McKee, Somers, CT (US);
James T Beals, West Hartford, CT (US);
Mark S Thompson, Tolland, CT (US);
Anthony Cooney, Unionville, CT (US);
Otis Elevator Company, Farmington, CT (US);
Abstract
An elevator safety brake is provided comprising two cantilevers, a pivot, a spring, and a hold-off-engagement linkage. In one embodiment, the hold-off-engagement linkage is comprised of two upper struts, and two lower struts. When it is desired to slow or stop the elevator via the safety brake, the lower struts move from a first position in which the lower struts are substantially in alignment with one another and the cantilevers are in an open position, to a second position in which the lower struts are not substantially in alignment with one another and the cantilevers are in a closed position. When the cantilevers are in the closed position, the spring exerts a force via the cantilevers on the guide rail in order to decelerate the elevator.