Accumulator piston having multiple elastomeric seals

Details Accumulator piston having multiple elastomeric seals Accumulator piston having multiple elastomeric seals

1993-12-07

1994-11-15

Denion, Thomas E.

Expansible chamber devices

Piston

Side wall portion includes peripheral axially extending...

92243, 92248, 92249, 92261, 277212F, 277178, 138 31, F16J 700, F16L 5504

Patent

active

053637445

ABSTRACT:
An accumulator piston is formed as a two-piece plastic molding for simplifying its construction and for cost reduction and weight reduction purposes. The piston has a radially stepped construction in which each step includes a radial flange carrying an annular elastomeric sealing element. The sealing elements have deformable, resilient lips which slidably engage the side surfaces of a stepped cylinder in which the piston reciprocates. One of the elastomeric sealing elements is molded to an annular insert member that is seated in an annular recess formed in one end of the main piston body. The two-piece piston construction facilitates installation and removal of mold cavity members relative to the respective elastomeric sealing elements such that the mold cavity members can be of simplified economical construction.

REFERENCES:
patent: 1797781 (1931-03-01), McCaughey
patent: 2764998 (1956-10-01), McCuistion
patent: 2808302 (1957-10-01), Bowerman
patent: 4214507 (1980-07-01), Hock et al.
patent: 4515378 (1985-05-01), Marshall
patent: 4521027 (1985-06-01), Marshall
patent: 4796895 (1989-01-01), Perkins
patent: 4892427 (1990-01-01), Ford
patent: 5022312 (1991-06-01), Rozek et al.

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