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U.S. Department of Energy
Office of Scientific and Technical Information

Rotary piston engine

Patent ·
OSTI ID:5836012
An improved rotary piston engine is described, comprising, in combination: a housing having an internal chamber bounded by curved bore including convex and concave curved surfaces, the internal cross section of the chamber presenting an oval profile which is constricted about a housing section disposed intermediate the convex and curved surfaces; a piston mounted for rotation within the chamber, the piston having a convex curved external surface and a slot intersecting the convex surface for receiving a movable vane; a piston vane mounted for extension and retraction through the piston slot; a resilient member mounted in the piston slot biasing the piston vane into yieldable engagement with the housing bore; and a counter-piston vane mounted on the housing for extension into and retraction out of the housing chamber, the counter-piston vane being mounted for sliding movement within a slot which intersects the housing through the constricted housing section.
Assignee:
NOV; EDB-89-115500; NOV-89-066026
Patent Number(s):
US 4817567
OSTI ID:
5836012
Country of Publication:
United States
Language:
English

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