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. 17, 2006
Filed:
Jan. 21, 2003
Applicant:
Hugo Birbaumer, Neuheim, CH;
Inventor:
Hugo Birbaumer, Neuheim, CH;
Assignee:
Bucher Hydraulics AG, Neuheim, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B66B 1/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
Apparatus for determining the position of an elevator car in an elevator shaft includes a resistance wire installed vertically in the elevator shaft, the wire having a first end supplied with an operating voltage and a second end supplied with a reference voltage; a voltage tap installed on the elevator car, the voltage tap having a contact which rides on the resistance wire between the ends; and a position sensing unit connected to the voltage tap by a measuring line.