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:
Nov. 21, 2000
Filed:
Nov. 30, 1998
Robert Gregory Fuller, Coventry, GB;
Lucas Industries, plc, Solihull, GB;
Abstract
A solenoid-controlled valve assembly comprises a solenoid (1) for controlling operation of a spool valve (2), and the solenoid is contained within a solenoid body (3). The spool valve comprises a spool (40) working in a bore (41, 42) in a spool housing (12), and the housing is, in turn, sealingly received in a spool body (10). The housing (12) may be of differential area and may be sealingly received in a complementary stepped bore (11) in the spool body, with the housing arranged in such a manner that when subjected to equal pressures over different area a resultant force tends to urge the housing in a given direction. In a modification the housing (12) may be resiliently biased away from the spool body (10) and relatively towards the solenoid (1) by a resilient member such as an annular ring (70) of elastomeric material, or a spring washer (71).