Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1990-03-21
1991-11-05
Shoap, Allan N.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
137846, 277 64, 277115, 277181, 606159, F16J 1518, A61M 2500, F16K 1514
Patent
active
050626485
ABSTRACT:
A device for establishing a fluid-tight seal around a rotatable drive shaft has a housing which is formed with a straight bore through which the drive shaft is positioned. The bore has a narrow portion, a wide portion and a tapered portion between the narrow and wide portions. A beveled annular seal is positioned in the wide portion of the bore around the drive shaft with the bevel abutting the side of the tapered portion of the bore. An actuator is engaged to the housing and is movable to urge the seal against the tapered portion of the bore to constrict the seal around the drive shaft and establish a fluid-tight seal between the drive shaft and the annular seal. The housing further includes an expanded conforming portion. A flexible seal valve is positioned in the expanded portion to receive the drive shaft. A seal valve has a deformable wedge-shaped portion terminating in a normally closed slit when the shaft is removed. The seal valve prevents leakage when the shaft is inserted into or withdrawn from the housing.
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Interventional Technologies Inc.
Shoap Allan N.
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