Expansible chamber devices – Plural flexible wall working members
Patent
1981-02-23
1983-03-29
Hershkovitz, Abraham
Expansible chamber devices
Plural flexible wall working members
91533, 92 36, 92 44, 92 98D, 92165PR, F01B 1902
Patent
active
043779662
ABSTRACT:
In a servo booster for a vehicle braking system, of the kind having a tie rod for relieving the booster housing of braking reaction forces which extends through the movable wall(s) of the booster, the movable wall is sealingly connected to a wall of the housing by a bellows located substantially coaxially about the tie rod. The bellows has at least one integral reinforcing rib which completely encircles the tie rod. The rib resists ballooning of the bellows and also guides the bellows along the tie rod. In the case of a tandem booster having a stationary partition wall between a pair of movable walls, the interior of a bellows connecting the rear movable wall to the partition wall provides fluid communication between the chambers bounded by the rears of the movable walls. Fluid communication between the other two chambers is provided via a tubular member integral with the front movable wall and extending sealingly through the partition wall.
REFERENCES:
patent: 3350882 (1967-11-01), Leising
patent: 3413990 (1968-12-01), Gachet
patent: 4256016 (1981-03-01), Thomas
Lilley Eric M.
Parker David J.
Hershkovitz Abraham
Lucas Industries Limited
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