Title: Sealed reservoir for brake master cylinder

Abstract: In a sealed fluid reservoir for a hydraulic brake master cylinder, inlet and outlet check valves are compactly assembled with a reservoir cap to constantly seal brake fluid stored in the reservoir against the surrounding air. The inlet and outlet check valves are selectively opened in response to rise or drop of the level of fluid in the reservoir to ensure smooth fluid supply to the brake master cylinder.

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Inventors: Nogami, Tomoyuki (Toyota, JP)
Tsubouchi, Kaoru (Toyota, JP)

Application Number: 712862
Filing Date: 1976-08-09
Publication_date: 1979-01-30
Assignee: Toyota Jidosha Kogyo Kabushiki Kaisha (Toyota, JP); Aisin Seiki Kabushiki Kaisha (Kariya, JP)
Primary Class(es): 137/558 60/535, 60/545, 60/592, 137/493.8, 137/588, 220/203.11
Other Classes:
US Patent Ref:

1758671	May, 1930	Loughead et al.	60/586.
2622762	Dec, 1952	Parsons	220/209.
3138173	Jun, 1964	Hartman	137/493.
3302658	Feb, 1967	De Frees	137/493.
3421606	Jan, 1969	Cadiou	137/493.
3654956	Apr, 1972	Tsubouchi	60/585.
3831801	Aug, 1974	Rodgers	137/493.
3968897	Jul, 1976	Rodgers	220/204.
3983894	Oct, 1976	Sheppard	137/493.

Other Refs: 2261762983085

Jun, 1974	DE
Feb, 1951	FR

Primary Examiner: Cohen, Irwin C.
Assistant Examiner:
Attorney: Stevens, Davis, Miller & Mosher