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:
Feb. 05, 1980
Filed:
Jan. 09, 1978
Applicant:
Inventor:
Alistair G Taig, South Bend, IN (US);
Assignee:
Bendix Westinghouse Limited, Chippenham, GB;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F15B / ; F01C / ; F01B / ;
U.S. Cl.
CPC ...
9137 / ; 92121 ; 92136 ;
Abstract
An hydro-mechanical torque amplifier such as a power steering unit for road vehicles. In the prior art, torque amplifying hydraulic pressure was applied to the linear part of a ball-screw geared to the output shaft such that all power went through meshing gear teeth, necessitating robust construction thereof. In the present invention, torque amplifying hydraulic pressure is applied to a vane motor on the output shaft such that hydraulic power does not pass through gear teeth, enabling a lighter and less costly construction.