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US 5,513,857 AGranted
Piston sealing ring having interlocking ends
AssigneeAisin Seiki Kabushiki Kaisha
InventorsTetsumi Watanabe, Yutaka Momose, Noboru Ohtani, Hiroyuki Katsuda
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Abstract
A sealing device for being mounted on a piston which is movably fitted within a cylinder, includes a sealing ring member having opposite end portions which are interlocked with each other along the circumferential direction of the sealing ring member, and an expanding device for expanding the radius of sealing ring member in the radial direction thereof.
Claims9
A sealing device mountable on a piston which is movably mounted within a cylinder, the sealing device comprising:
- a sealing ring member having opposite first and second end portions including projections extending in opposite directions relative to the axis of the piston when the sealing ring is mounted to the piston, said first end portion being initially spaced from said second end portion to form a gap and becoming interlocked with said second end portion when the gap becomes zero due to expansion of said sealing ring member in the radial direction of the sealing ring member resulting from reciprocal sliding movements of the sealing ring member along the cylinder;
- and
- expanding means for expanding the radius of said sealing ring member in a radial direction thereof.
Dependencies are inferred from the claim text.