Patent ID: 6502828
Filing Date: 2003-01-07
Classification: F15B,F16J

Abstract:
An accumulator comprising:a shell having a rigid closed end portion and an open end; a cover member fixed to the open end of the shell so as to provide a housing; an operating member provided in the housing; the operating member having a rigid end member and a bellows with two ends, said one end of the bellows being secured to the cover member, and the other end of the bellows being secured to the end member, the housing has an interior which is divided by the bellows and the end member into an internal gas chamber and an external pressure chamber; an end seal for sealing between the closed end portion and the operating member, the end seal having a seal member mounted on the closed end portion, the seal member being made of an elastic material and having a seal lip which is to be pressed by a fluid pressure so as to seal the end member of the operating member when the end member of the operating member comes into contact with the closed end portion; and the operating member further includes a slide member which slidably moves in the housing for guiding parallel movement of the rigid end member when the bellows expands and contracts.