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. 08, 2008
Filed:
May. 20, 2005
Applicant:
Philipp Angst, Zug, CH;
Inventor:
Philipp Angst, Zug, CH;
Assignee:
Inventio AG, Hergiswil, CH;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B66B 1/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and system for supervising the safety of an elevator having a car driven by a drive within a hoistway wherein a travel parameter (X,X″,X') of the car is sensed and continually compared with a similarly sensed travel parameter (X′) of the drive. If the comparison shows a large deviation between the two parameters, an emergency stop is initiated. Otherwise one of the travel parameters (X,X″X′; X′) is output as a verified signal (X;X′). The verified signal is then compared with predetermined permitted values. If it lies outside the permitted range then an emergency stop is initiated.