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. 13, 1993
Filed:
Jan. 08, 1992
Applicant:
Inventors:
Richard J Ericson, Southington, CT (US);
Michael Lang, Middletown, CT (US);
Assignee:
Otis Elevator Company, Farmington, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B66B / ;
U.S. Cl.
CPC ...
187 20 ; 188188 ;
Abstract
Movement of an elevator cab drive sheave is controlled by a multiple disc brake assembly which is operably connected to the output shaft and sheave of the elevator drive machine. The disc brake assembly can act as an upward or downward safety brake, and can also serve as the operating brake for normal operation of the elevator. The brake assembly can be fitted onto a substantially conventional existing elevator system, and its operation is not affected by any gear degradation in the machine drive gears.