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, 2003
Filed:
May. 02, 2002
Applicant:
Inventors:
Assignee:
Otis Elevator Company, Farmington, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B66B 1/34 ;
U.S. Cl.
CPC ...
B66B 1/34 ;
Abstract
Transport system ( ), comprising a controller, a drive motor and a safety switch ( ) that is connected to a safety-related part ( ) of the transport system ( ) and is able to distinguish between a safe state of the transport system ( ) and an unsafe state of the transport system ( ), where the safety switch is connected to the controller in order to interrupt the power to the drive motor in an unsafe state, characterized by the fact that the safety switch ( ) is realized so that it is able to also detect a warning state in addition to the safe state and the unsafe state.