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:
Aug. 21, 1990
Filed:
Nov. 17, 1988
Applicant:
Inventor:
Anthony W Harrison, Birmingham, GB;
Assignee:
Lucas Industries Public Limited Company, Birmingham, GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60T / ; B60T / ;
U.S. Cl.
CPC ...
303115 ; 303113 ; 303116 ;
Abstract
An hydraulic braking system includes a primary pressure source connected to a brake actuator and operable by a force input device, a fluid displacer actuated by an electrical stepper motor operated by a controller in response to action of the force input device, as sensed by a sensor, whereby fluid displaced from the displacer is added to that displaced from the primary pressure source for application to the brake actuator. By suitable programming of the controller, servo-assistance and/or quick-fill modes can be produced by the displacer and wheel-slip correction and anti-skid facility can be provided.