Expansible chamber devices – Relatively movable working members – Interconnected by linkage having relatively movable members
Patent
1991-08-28
1992-09-01
Look, Edward K.
Expansible chamber devices
Relatively movable working members
Interconnected by linkage having relatively movable members
921701, 60562, F01B 100
Patent
active
051429659
ABSTRACT:
The master cylinder piston retaining member (90, 190) comprises either a flexible, ribbed bellows type member (190) or a nonflexible member (90) attached at one end of the master cylinder (10) in order to retain the primary piston (30) within the master cylinder (10). A cartridge master cylinder (10) having an end member (18) attached at one end (16) and retaining a sleeve member (20) within the bore (14), includes a pair of pistons (30, 40) with one piston (30) biased by a top hat construction (50) comprising one member (52) telescopically and slidable received within the other member (54) and having a spring (55) extending therebetween so that the maximum expansion of the spring (55) is limited. The primary piston (30) of the master cylinder (10) is positioned within an opening (26) of the end member (18). The piston retaining member (90, 190) is seated at one end within the end member (18) in order to be attached therewith and at the other end includes a radially inwardly extending flange (91, 191) which engages an axial end (31) of the primary piston (30) in order to limit by a predetermined amount the position of the primary piston (30) relative to the master cylinder (10). The piston retaining member (b 90, 190) enables a previously used top hat construction for the secondary piston (40) to be replaced with merely a spring (56).
REFERENCES:
patent: 3166908 (1965-01-01), Chouings
patent: 3266383 (1966-08-01), Cairns
patent: 4249381 (1981-02-01), Gaiser
patent: 4527395 (1985-07-01), Gaiser et al.
patent: 4745751 (1988-05-01), Gaiser
Allied-Signal Inc.
Decker Ken C.
Look Edward K.
Lopez F. Daniel
Palguta Larry J.
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