Power plants – Pressure fluid source and motor – Pulsator
Reexamination Certificate
2008-03-18
2008-03-18
Lopez, F. Daniel (Department: 3745)
Power plants
Pressure fluid source and motor
Pulsator
C277S441000
Reexamination Certificate
active
11523191
ABSTRACT:
A master cylinder (1) having a bore (3) fitted with at least one piston (4, 5) and at least one seal (19, 20, 21, 22). The seal (19, 20, 21, 22) is partially stiffened by a reinforcement member (25). In order to retain the piston (4,5) in the bore (3) a groove (31) is located on a circumference of the piston (4,5) against which the sealing member (25) bears with the piston (4,5) in a rest position to retain the piston (4,5) in bore (3).
REFERENCES:
patent: 4945728 (1990-08-01), Coleman
patent: 5163692 (1992-11-01), Schofield et al.
Bernadat Olivier
Beylerian Bruno
Bourlon Philippe
Nen Yannick
Lopez F. Daniel
McCormick Jr. Leo H.
Robert & Bosch GmbH
Taylor Sarah
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