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. 09, 2020
Filed:
Jun. 06, 2017
Applicant:
Otis Elevator Company, Farmington, CT (US);
Inventor:
Bin Wang, Tianjin, CN;
Assignee:
OTIS ELEVATOR COMPANY, Farmington, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B66B 13/24 (2006.01); B66B 5/00 (2006.01); B66B 13/16 (2006.01); B66B 5/02 (2006.01); B66B 13/14 (2006.01); B66B 1/26 (2006.01);
U.S. Cl.
CPC ...
B66B 13/245 (2013.01); B66B 5/0031 (2013.01); B66B 5/0062 (2013.01); B66B 5/027 (2013.01); B66B 13/14 (2013.01); B66B 13/16 (2013.01); B66B 1/26 (2013.01); B66B 5/005 (2013.01);
Abstract
The present invention provides a maintenance safety apparatus for an elevator system and a method for operating the same, and belongs to the technical field of elevators. The maintenance safety apparatus of the present invention comprises a safety switch, a door lock device, a linkage control assembly and a linkage locking assembly. The maintenance safety apparatus of the present invention is very simple to operate and is capable of ensuring the safety of the staff entering a hoistway for performing maintenance operations.