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. 07, 2000
Filed:
Mar. 01, 1999
Hiroya Gotoh, Higashimatsuyama, JP;
Riichirou Sugimoto, Higashimatsuyama, JP;
Jidosha Kiki Co., Ltd., , JP;
Abstract
There is provided a master cylinder in which a large quantity of working fluid can be supplied rapidly, the air bleeding takes less time in the manufacturing process, and satisfactory performance can be provided when traction control is operated. For the master cylinder MC, a first supply passage 19 for supplying a working fluid from a working fluid reservoir to a pressure chamber 9 through a working fluid supply port 20a, supply passages 22, 23 and 24, and a working fluid supply port 5b formed in a piston 5, a second supply passage 50 is formed in parallel with the first supply passage directly between the working fluid supply port 20a and the pressure chamber 9, and a check valve 51 is disposed in the second supply passage 50. When the pressure in the pressure chamber 9 is lower than the pressure of the working fluid reservoir, the check valve 51 is opened, thereby allowing the working fluid to flow to the pressure chamber 9, and when the pressure in the first pressure chamber 9 is higher than the pressure of the working fluid reservoir, the check valve 51 is closed, thereby inhibiting the flow of the working fluid from the pressure chamber 9 to the working fluid reservoir.