Pressure fluid reservoir for vehicle brake systems

Details Pressure fluid reservoir for vehicle brake systems Pressure fluid reservoir for vehicle brake systems

1990-02-23

1991-07-16

Fidei, David T.

Pipes and tubular conduits

With pressure compensators

Variable capacity chambers

138 26, 92181R, 92181P, F16L 5504, F01B 3100

Patent

active

050316648

ABSTRACT:
A pressure fluid reservoir having at least an approximately vertically disposed cylinder with a displaceably guided divider piston therein. The piston divides a pressure fluid reservoir chamber of the cylinder, located below the piston from a gas chamber located above the piston. The divider piston has a hollow chamber, which is covered with respect to the gas chamber by a cap having an opening. The cap has a fluid seal for lubricating piston sealing rings. A riser pipe that begins at an opening in the cap extends as far as a bottom of the hollow chamber that contains fluid. In an expansion of a gas cushion located in the gas chamber in the riser pipe and in the hollow chamber, fluid is pumped through the riser pipe to the fluid seal, to regenerate it the fluid seal. The pressure fluid reservoir is particularly well suited to vehicle brake systems, where long functional reliability of a piston seal is crucial.

REFERENCES:
patent: 1959640 (1934-05-01), Peters
patent: 2930360 (1960-03-01), Yando
patent: 4043352 (1977-08-01), Simpson
patent: 4685491 (1987-08-01), Fulmer et al.

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