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SEALING DEVICE

  • US 3,827,700 A
  • Filed: 09/29/1972
  • Issued: 08/06/1974
  • Est. Priority Date: 10/01/1971
  • Status: Expired due to Term
First Claim
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1. Sealing device for preventing leakage of high-pressure gas between two relatively movable elements comprising at least two spaced and facing sealing members defining together with the movable elements a space for a non-gaseous medium, characterized in that a first sealing member contiguous to the high-pressure gas is displaceable under the action of the high-pressure gas towards a second sealing member contiguous to the low-pressure side and in that means coacting with the displaceable sealing member are adapted to impart to the medium confined in said space a resulting pressure higher than the pressure of the highpressure gas.

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