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:
Sep. 20, 2005
Filed:
May. 02, 2003
Applicants:
Philipp Angst, Zug, CH;
Urs Baumgartner, Merenschwand, CH;
Inventors:
Philipp Angst, Zug, CH;
Urs Baumgartner, Merenschwand, CH;
Assignee:
Inventio AG, Hergiswil, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B66B013/26 ;
U.S. Cl.
CPC ...
Abstract
A method for monitoring shaft doors of a elevator installation uses at least one contactlessly acting shaft door monitoring sensor to emit a beam of electromagnetic waves, wherein at least during specific detection phases the beam extends over several floors and is detected by a receiver. The beam is influenced by a shaft door panel not being completely closed and/or a shaft door lock not being disposed in the locking setting such that a disturbance signal is generated to the elevator control.