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. 09, 1991
Filed:
Feb. 12, 1988
Applicant:
Inventors:
John Jones, Essington, GB;
Rinaldo G Uccellini, Wolverhampton, GB;
Assignee:
Yale Materials Handling Limited, Wolverhampton, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60K / ; B62D / ;
U.S. Cl.
CPC ...
180 651 ; 180142 ; 180 791 ; 290-9 ; 290 45 ; 388815 ;
Abstract
An electrically propelled vehicle with hydraulic power steering supplied from an electricaly driven pump includes a sensor for sensing any voltage generated in the traction motor of the vehicle, for example, when it is coasting, and after comparing this generated voltage with a reference voltage a sensor for signalling the actuation of the power steering pump when the generated voltage exceeds the reference voltage.