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. 16, 2002
Filed:
Nov. 06, 1997
Mark S. Thompson, Tolland, CT (US);
James T. Beals, West Hartford, CT (US);
Philip H. McCluskey, Manchester, CT (US);
David W. McKee, Somers, CT (US);
Michael C. Lang, Naugatuck, CT (US);
Fred J. Lussier, Hebron, CT (US);
Joseph A. L. LeDoux, Plantsville, CT (US);
Dat T. Nguyen, West Hartford, CT (US);
Paul Bennett, Waterbury, CT (US);
Otis Elevator Company, Farmington, CT (US);
Abstract
An elevator safety brake for stopping an elevator car is provided with a brake shoe having a molybdenum alloy friction surface for contacting an elevator guide rail surface to provide a stopping force. The molybdenum alloy contains 99.4 weight percent molybdenum, 0.5 weight percent titanium and 0.1 weight percent zirconium. The friction surface of the brake formed from the alloy exhibits a consistent high friction and low wear suitably accommodating high speed, high load elevators installed in very tall buildings.