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:
Jul. 15, 2008
Filed:
Sep. 22, 2003
Applicants:
Christoph Liebetrau, Menziken, CH;
Ruedi Stocker, Buchrain, CH;
Esben Rotboll, Zug, CH;
Inventors:
Assignee:
Inventio AG, Hergiswil NW, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B66B 5/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A safety device brakes an elevator car with a guide rail exhibiting an oblong guide flange. The safety device includes a base carrying a retaining element and an abutment with the guide flange positioned therebetween. A mechanism squeezes, when braking, a braking element blocking roller between the guide flange and the abutment. The mechanism, co-operating with an electromagnet, moves the braking element in a controlled way between different positions associated with different operating conditions of the safety device.