Master cylinder

Details Master cylinder Master cylinder

2006-04-25

2006-04-25

Look, Edward K. (Department: 3745)

Power plants

Pressure fluid source and motor

Pulsator

C060S562000

Reexamination Certificate

active

07032380

ABSTRACT:
A brake master cylinder includes a cylinder body having a circumferential groove formed therein. A primary cup is received in the groove and supported axially by a rear wall defined by the groove. A primary piston is inserted in the cylinder body in sliding contact with the primary cup. The rear wall has a radially inner surface formed with a plurality of grooves. A passage leading to a reservoir is provided in the rear of the grooves. The piston is formed with radial through holes corresponding to the grooves. When the piston is at the return end of its stroke, the pressure chamber defined in the cylinder body can communicate with the reservoir through the radial through holes, the grooves and the passage.

REFERENCES:
patent: 1943886 (1934-01-01), Carroll
patent: 4939901 (1990-07-01), Saalbach et al.
patent: 5617725 (1997-04-01), Yasuda
patent: 6463737 (2002-10-01), Inoue et al.
patent: 6467268 (2002-10-01), Nakano et al.
patent: 6694732 (2004-02-01), Tsubouchi
patent: 10-513413 (1998-12-01), None
patent: 2002-104162 (2002-04-01), None

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