Machine element or mechanism – Elements – Gear casings
Patent
1997-09-12
1998-12-29
Luong, Vinh T.
Machine element or mechanism
Elements
Gear casings
4283191, 428131, F16H 5702
Patent
active
058529578
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.
REFERENCES:
patent: 4037009 (1977-07-01), Severinsen
patent: 4255482 (1981-03-01), Udagawa
patent: 4399174 (1983-08-01), Tanaka et al.
patent: 4485138 (1984-11-01), Yamamoto
patent: 4642951 (1987-02-01), Mortimer
patent: 4906501 (1990-03-01), Honma et al.
Luong Vinh T.
Nichias Corporation
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