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:
Jan. 31, 2012
Filed:
Feb. 25, 2005
Boris Traktovenko, Avon, CT (US);
Robin Mihekun Miller, Canton, CT (US);
James L. Hubbard, Iii, Kensington, CT (US);
Boris Traktovenko, Avon, CT (US);
Robin Mihekun Miller, Canton, CT (US);
James L. Hubbard, III, Kensington, CT (US);
Otis Elevator Company, Farmington, CT (US);
Abstract
An elevator machine () assembly useful in an elevator system () includes a motor frame () that supports a motor () for selectively rotating a motor shaft (). A brake () selectively applies a braking force to resist rotation of the motor shaft (). At least one load sensor () resists undesirable movement of the brake () and provides an indication of a load that results from applying the braking force. A disclosed example includes using a first resistive member () to resist movement of the brake () relative to the motor frame () when the load is below a threshold load and using a second resistive member () to resist movement when the load exceeds the threshold load.