Accumulator

Details Accumulator Accumulator

2006-02-07

2006-02-07

Castellano, Stephen (Department: 3727)

Receptacles

Container attachment or adjunct

Expanding or contracting portion or component

C220S720000

Reexamination Certificate

active

06994228

ABSTRACT:
In an accumulator which is provided in a pipe of an equipment so as to temporarily accumulate a pressure within a piping flow passage or absorb a pulsation of a fluid pressure generated within the pipe by a pump or the like, in order to improve a durability against repeated bending and stretching motions of a bladder (3) under a low temperature environment not more than 0° C., and effectively prevent a cushion gas in a gas chamber from being reduced, the bladder (3) has a laminated structure, for example, constituted of a center elastic layer (321), a gas shielding layer (322) in an outer side thereof and an outer elastic layer (323) in a further outer side thereof, the center elastic layer (321), the gas shielding layer (322) and the outer elastic layer (323) are made of a polyamide resin, and the gas shielding layer (322) has a module of bending elasticity higher than that of the center elastic layer (321) and the outer elastic layer (323).

REFERENCES:
patent: 6058976 (2000-05-01), Le Rossignol
patent: 9-111064 (1997-04-01), None
patent: 2700594 (1997-10-01), None
patent: 10-246202 (1998-09-01), None
patent: 11-37102 (1999-02-01), None

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