Sealing structure
AssigneeEagle Industry Co., Ltd.
InventorTatsuhiro ARIKAWA
Life of this patent
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Abstract
A seal structure is provided which enables a reduction in the number of components and an improvement of the stability in sliding of the seal portion or the backup ring portion. A sealing structure seals two members which move relative to each other, in which a seal portion or a backup ring portion placed between the two members and a bearing portion similarly placed between the two members are formed into an integral structure. The seal portion or the backup ring portion is integrally provided to one end portion in the axial direction or both end portions in the axial direction of the bearing portion having a cylindrical shape. The seal structure is used as a piston seal or a rod seal in hydraulic and pneumatic devices in which a piston is inserted into a shell or a cylinder tube.
Claims4
A sealing structure sealing two members which move relative to each other, the sealing structure comprising:
- a seal portion or a backup ring portion placed between the two members;
- and
- a bearing portion similarly placed between the two members, wherein
- the seal portion or the backup ring portion and the bearing portion are formed into an integral structure.
Dependencies are inferred from the claim text.