Other

Hilliard-lyons Patent Management, Inc.

Charles F Evans

Fred C Eicher

An elongate elastomeric seal member including a first portion to be partially received in an elongate groove of a selected element where the groove has opposite sides and a base connecting the sides and a second portion extending outwardly from the opposite edges of the groove to sealably engage a sealing surface adjacent the element where fluid pressure is selectively applied to at least one side of the seal and where the seal, in cross section, includes a central body with first and second spaced feet extending outwardly therefrom to be received in the groove and engage the sides and base of the groove and third and fourth feet extending outwardly from the central element to slidably engage the sealing surface wherein fluid can be applied to at least one of the third and fourth feet to urge one of said third and fourth feet to sealing relation with said sealing surface.

Dynamic seal arrangement with X-shaped seal

An oscillatory fluid powered motor includes a cylindrical body closed at its opposite ends by head members to define a chamber. Each head member has a central opening in aligned relationship with the longitudinal axis of the cylindrical body for receiving the opposite ends of a shaft. At least one vane is structurally associated with the shaft for rotation therewith, and extends radially of the cylindrical housing from the shaft. At least one stationary stator is attached to the interior wall of the cylindrical housing and extends radially of the housing. The cylinder heads include a bearing surface surrounding the central openings, and a ring seal concentrically disposed with and radially spaced from the central openings. The vane has a peripheral seal which sealingly contacts the bearing surface of each cylinder head, the interior wall surface of the cylindrical body and a portion of each ring seal. Similarly, the stator has a peripheral seal which sealingly contacts the bearing surface of each cylinder head, the peripheral surface of the shaft, and a portion of each ring seal.

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La Grange, KY, United States of America

Charles F Evans