Power plants – Pressure fluid source and motor – Pulsator
Patent
1998-03-16
2000-03-14
Lopez, F. Daniel
Power plants
Pressure fluid source and motor
Pulsator
B60T 1126
Patent
active
060356367
ABSTRACT:
In the master cylinder of the present invention, a cylindrical portion of a grommet seal includes at least two outer sealing projections on an outer circumferential surface thereof, an inner sealing projection on an inner circumferential surface thereof at a position corresponding to a recess between the outer sealing projections, and an abutting portion adapted to abut against a positioning stepped portion provided in a supply fitting of a reservoir. When the supply fitting is inserted into the grommet seal fitted in a boss of a cylinder body, deformation of the inner sealing projection is relieved by a cavity constituted by the recess between the outer sealing projections. When a hydraulic pressure is applied to the cylindrical portion of the grommet seal, because the abutting portion of the grommet seal abuts against the positioning stepped portion of the supply fitting of the reservoir, the cylindrical portion is axially compressed, so that sealability of the sealing projections can be improved.
Ogiwara Takato
Sano Kenji
Lopez F. Daniel
Tokico Ltd.
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