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:
Dec. 29, 1998
Filed:
Sep. 12, 1997
Hiroshi Saito, Nara, JP;
Nichias Corporation, Tokyo, JP;
Abstract
A separate plate for a control valve used in an automatic transmission having an excellent sealing property is provided, independently of smoothness and rigidity of sealing surfaces. The separate plate comprises a metal plate and one or two sealing portions, each of which consists of a foam rubber layer 80 .mu.m to 500 .mu.m thick, formed on one or two surfaces thereof. Each of the one or two seal portions consists of a foam rubber layer reinforced with inorganic fiber, organic fiber or an unwoven cloth. Or it may has a two-layered structure consisting of a not yet foamed rubber layer 90 .mu.m to 300 .mu.m thick, whose rubber hardness defined by JIS SHORE A is 40 to 95, and a foam rubber layer 80 .mu.m to 200 .mu.m thick or a foam rubber layer 80 .mu.m to 200 .mu.m thick reinforced with inorganic fiber, organic fiber or an unwoven cloth.