Power plants – Pressure fluid source and motor – Pulsator
Reexamination Certificate
2005-03-08
2005-03-08
Look, Edward K. (Department: 3745)
Power plants
Pressure fluid source and motor
Pulsator
C060S562000, C092S168000
Reexamination Certificate
active
06862884
ABSTRACT:
A master cylinder (10) for a vehicle hydraulic brake system has a housing (12), which has a bore (14), which extends along a longitudinal axis (A) and is sealingly closed at one end by an end wall forming part of the housing (12) of the master cylinder (10) and at the other, opposite end by a closure element (16). A piston (18), which is guided in the bore (14), extends in a sealing and axially displaceable manner through the closure element (16). A central valve (20) is formed on the piston (18) and enables a fluid connection between a fluid reservoir and a pressure chamber (28) delimited in the bore (14) by the end wall and the piston (18) and, in the non-actuated state of the piston (18), is held in open position by an abutment component (34) acting upon the closure element (16). The closure element (16) is formed by two annular, axially mutually adjoining parts (42, 44), which are releasably connected to one another and of which the first part (42) facing the bore (14) is made of an elastomer material and the second part (44) remote from the bore (14) is made of a rigid material. For easy and reliable assembly, the part (44) of the closure element (16) remote from the bore (14) has at least two compliant detent arms (57), which interact with a detent groove (66) formed in the housing (12).
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Cohen Rudolf
Goerlitz Frank
Gonzalo Leopoldo Palacids
Münz Christoph
Leslie Michael
Look Edward K.
Lucas Automotive GmbH
MacMillan Sobanski & Todd LLC
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