High temperature engine and seal
This patent describes an apparatus for sealing a cylinder of the type having a closed end and an open end and an interior surface therebetween to a movable piston of the type having a face end and a rod end. The piston is movable over a specific length of the cylinder. This apparatus consists of an extension skirt located substantially on the perimeter of the rod end of the piston and extending away from the face end of the piston the skirt extension has an exterior surface in close proximity to the interior surface of the cylinder. An elastomeric pressure seal is retained in the interior surface of the cylinder, contacting the exterior surface of the extension skirt at a point spaced apart from the face end of the piston at least a distance adequate to prevent heat at the surface of the piston face end from being excessively transferred by conduction to the pressure seal.
- Assignee:
- NOV; EDB-86-101929
- Patent Number(s):
- US 4574590
- OSTI ID:
- 5899959
- Resource Relation:
- Patent File Date: Filed date 10 Sep 1984
- Country of Publication:
- United States
- Language:
- English
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