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. 10, 2018
Filed:
Jun. 10, 2014
Applicant:
Thyssenkrupp Elevator Corporation, Atlanta, GA (US);
Inventor:
Michael Bray, Sandy Springs, GA (US);
Assignee:
ThyssenKrupp Elevator Corporation, Atlanta, GA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B66B 9/04 (2006.01);
U.S. Cl.
CPC ...
B66B 9/04 (2013.01);
Abstract
A hydraulic elevator system is operable to selectively raise and lower an elevator car. The system raises and lowers the elevator car by actuating a hydraulic jack. The system retracts a hydraulic jack that is fixed to an upper portion of the hoistway by pressurizing hydraulic fluid within the hydraulic jack via a hydraulic fluid pump. When retracting the hydraulic jack the elevator car travels upward. An accumulator usable with the system is operable to store energy during the downward travel of the elevator car for later use during the upward travel of the elevator car.