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:
Jan. 01, 1980
Filed:
Nov. 04, 1977
Applicant:
Inventors:
Takashi Fujii, Toyota, JP;
Atsushi Ohmi, Anjo, JP;
Tomoyuki Nogami, Toyota, JP;
Takaaki Ohta, Okazaki, JP;
Assignees:
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, JP;
Primary Examiner:
Int. Cl.
CPC ...
F15B / ;
U.S. Cl.
CPC ...
137572 ; 60586 ; 60592 ; 220208 ; 220209 ;
Abstract
A sealed type hydraulic reservoir including a check valve for normally preventing communication between a sealed chamber in which brake fluid is stored and the surrounding atmospheric environment. The check valve allows atmospheric air to flow into the sealed chamber only when the pressure in the chamber drops below atmospheric level. A second check valve may be included for allowing air flow only out of the sealed chamber when the pressure in the chamber rises above atmospheric level.