Fluid-pressure and analogous brake systems – Pulsation neutralizers
Patent
1993-08-17
1995-02-21
Graham, Matthew C.
Fluid-pressure and analogous brake systems
Pulsation neutralizers
138 30, B60T 1704
Patent
active
053909895
ABSTRACT:
In an accumulator housing for brake system fluid pressure a resilient bulb has a portion expandable by fluid pressure inserted in a sleeve which prevents radial expansion of the expandable bulb and allows only expansion of the end wall thereof toward the bottom wall of a bore in the housing in which the sleeve is inserted. This expansion of the end wall only is enhanced by a coating of lubricant on the inside surface of the sleeve. A pair of discs inside the bottom of the sleeve are normally maintained in contact between the end wall of the expandable bulb and bottom wall of the bore by disc springs connected therebetween with bosses on the respective discs extending toward each other through the inner bores of the springs and terminating in spaced apart stop surfaces. The stop surfaces move into abutment with each other on expansion of the end wall under pressure to prevent further compression of the springs and further expansion of the bulb thus prolonging the life of both members.
REFERENCES:
patent: 2132952 (1938-10-01), Hewitt
patent: 3430660 (1969-03-01), Mitton
patent: 4188073 (1980-02-01), Ishikawa et al.
patent: 4571009 (1986-02-01), Jones
patent: 5036879 (1991-08-01), Ponci
patent: 5058961 (1991-10-01), Mergenthaler et al.
patent: 5074625 (1991-12-01), Jones
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