Master cylinder comprising a helical resupply groove

Details Master cylinder comprising a helical resupply groove Master cylinder comprising a helical resupply groove

2011-08-02

2011-08-02

Lazo, Thomas E (Department: 3745)

Power plants

Pressure fluid source and motor

Pulsator

C060S588000, C060S589000

Reexamination Certificate

active

07987671

ABSTRACT:
Brake master cylinder (10) for a motor vehicle, of the type which comprises a substantially axial body (12) inside a bore (14) of which is slideably mounted at least one axial piston, of the type in which the bore (14) comprises two seals, front and rear, interposed between the piston and the bore (14), characterized in that it comprises at least one wide groove (66, 68) which is formed in the bore (14) in front of a groove (70, 72) for retaining the front seal, which extends at least in part around the piston, and which communicates with said retaining groove (70, 72) and the hole in the piston, in order to allow resupplies to occur with a high flow rate.

REFERENCES:
patent: 4429531 (1984-02-01), Spielmann
patent: 6848257 (2005-02-01), Bacardit et al.
patent: 2004/0128995 (2004-07-01), Bacardit et al.
patent: 2005/0115237 (2005-06-01), Tsubouchi et al.
patent: 2007/0068154 (2007-03-01), Bernadat et al.
FR0703599 Search Report and Written Opinion.

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