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:
Apr. 13, 2004
Filed:
May. 13, 2002
Applicant:
Inventors:
Miles P. Lamb, Chester, NJ (US);
William J. Rafferty, Oak Ridge, NJ (US);
Assignee:
Inventio AG, Hergiswil, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B66B 9/04 ;
U.S. Cl.
CPC ...
B66B 9/04 ;
Abstract
A hydraulic power unit for use in conjunction with an elevator construction having an elevator car operably connected to a pair of hydraulic rams comprises a chassis having a floor and a sidewall forming a hydraulic fluid sump region. The hydraulic rams are mounted to the floor in the sump region. A hydraulic fluid reservoir is supported by the chassis, which also supports a pump/motor unit for the rams. Leveling feet mounted to the chassis allow the power unit to accommodate a variety of conditions in the hoistway pit.