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:
Sep. 18, 1990
Filed:
Jun. 15, 1989
Applicant:
Inventors:
Robert T Burton, Leamington Spa, GB;
Phillip A Taft, Solihull, GB;
Assignee:
Lucas Industries Public Limited Company, Brimingham, GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60T / ; B60T / ;
U.S. Cl.
CPC ...
303115 ; 303113 ; 303116 ;
Abstract
In an hydraulic anti-skid braking system (FIG. 1), a valve controlling the flow of braking fluid to a brake actuator is actuated by a pulse-driven stepper motor in response to signals emanating from a skid sensor. In a practical arrangement (FIG. 3), a motor under the control of a microprocessor actuates a pressure dump valve via an eccentric mechanism upon the appearance of a skid signal at the sensor, in order to de-pressurize the actuator, and also drives a pump which assists in re-pressurizing the system when the skid signal ceases.