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. 21, 2014
Filed:
Sep. 07, 2007
Applicants:
Zbigniew Piech, Wolcott, CT (US);
Wojciech Szelag, Poznan, PL;
Inventors:
Zbigniew Piech, Wolcott, CT (US);
Wojciech Szelag, Poznan, PL;
Assignee:
Otis Elavator Company, Farmington, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16F 9/53 (2006.01);
U.S. Cl.
CPC ...
Abstract
An elevator brake assembly includes a braking fluid for providing a braking force. A first magnet provides a first magnetic field that influences the braking fluid to provide the braking force. The second magnet selectively provides a second magnetic field that controls how the first magnetic field influences the braking fluid to control the braking force.