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US 4,309,039 AGranted
Continuous self-locking spiral wound seal
AssigneeThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration
InventorStephen C. Irick
Life of this patent
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Abstract
A spiral wound seal for effecting a seal between two surfaces. The seal consists of a strip of gasket material wound into a groove machined into one of the surfaces. The gasket strip is wider than the groove is deep such that a portion of the gasket material protrudes from the groove. The seal is effected by clamping the second surface onto the first surface and thereby compressing the protruding gasket material.
Claims14
A spiral wound seal comprising:
- a first member having a surface with a groove cut therein;
- a second member having a surface adjacent to said first surface;
- a continuous strip of gasket material having a width greater than the depth of said groove, spirally wound into said groove and protruding therefrom;
- and
- clamping means to hold said second surface against said strip with sufficient force to effect a seal between said first surface and said second surface.
2 more elements
A method of forming a seal comprising:
- providing a first surface having a groove;
- providing a second surface adjacent to said first surface;
- providing a strip of gasket material having a width greater than the depth of said groove;
- spirally winding said strip into said groove;
- providing clamping means to engage said second surface against said strip and said strip against said first surface between said strip and said second surface;
- and
- applying sufficient force to said strip to effect a seal between said first and second surfaces.
4 more elements
Dependencies are inferred from the claim text.