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:
Jun. 13, 2023
Filed:
Apr. 15, 2020
Otis Elevator Company, Farmington, CT (US);
Ralph S. Stripling, Berlin, DE;
Sven Knuth, Berlin, DE;
OTIS ELEVATOR COMPANY, Farmington, CT (US);
Abstract
An elevator systemis provided which comprises: a hoistwayaccessible by at least one hoistway door; at least one elevator carlocated in the hoistway; a hoistway door switchassociated with the at least one hoistway door; at least one inspection switch; at least one emergency stop switch; and an elevator controller. The elevator controlleris configured to monitor the hoistway door switch, the inspection switchand the emergency stop switchand to prevent inspection mode operation of the elevator caruntil at least one change of state is detected of each of the hoistway door switch, the inspection switchand the emergency stop switch