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:
May. 09, 1989
Filed:
May. 22, 1987
Edward N Fuller, Manchester, MI (US);
Gary A Willi, Ann Arbor, MI (US);
Kelsey-Hayes Company, Romulus, MI (US);
Abstract
A control valve for an anti-lock brake system includes a one-piece valve body having an inlet opening in one end and an outlet opening in an opposite end. The valve body is provided with four other openings extending into the body and defining separate associated chambers for respectively receiving an isolation valve assembly, a pressure differential switch assembly, a dump valve assembly and an accumulator assembly. The inlet, outlet, and the four internal chambers are connected by appropriate internal passageways. The control valve is used to selectively hold, dump, or reapply brake fluid pressure to selected wheel brakes to prevent lock-up of the associated wheels.