Rotary expansible chamber devices – With mechanical sealing – Seal element between working member and cylinder
Patent
1994-05-18
1996-07-23
Freay, Charles
Rotary expansible chamber devices
With mechanical sealing
Seal element between working member and cylinder
418144, 277143, F01C 1908
Patent
active
055384099
ABSTRACT:
A piston side seal for a multi-lobed piston of a trochoidal rotary engine, consisting of an elongate, resilient metal seal member in the form of a ribbon having first and second opposed side edges wherein in use, the first edge is adapted for lateral location in a seal groove of a multi-lobed trochoidal piston and the second edge will face and provide a seal with a side plate surface of an engine housing when a force is applied to urge said seal member outwardly with respect to the groove, and characterized in that the seal member is provided with at least one longitudinally extending bevelled surface which faces away from the second edge and is adapted such that when the force is applied to the bevelled surface, the force is resolved into a first component to achieve the sealing of the second edge with the side plate surface of an engine housing and a second component which acts to urge the seal member into engagement with one side of the piston groove to provide a gas seal between the seal member and that one side.
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Cureton George K.
Walter Jacek
Freay Charles
Scalzo Automotive Research Limited
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