Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1989-10-10
1991-03-19
Shoap, Allan N.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277102, 277113, F16J 1500
Patent
active
050004638
ABSTRACT:
A sealing system 40 for use in a cooling system 10 having a compressor with a shaft 20, at least partially disposed within a housing 12. The shaft 20 is adapted for rotational movement about the longitudinal axis 23 thereof. A working fluid is disposed within the housing 12 around the shaft 20. The sealing system 40 of the invention includes a coil 26 for moving the shaft 22 along the longitudinal axis thereof 23 from a first position to a second position. A sealing plate 42 is disposed about the shaft 22. Static seals 44, 46 are disposed about the shaft 22 between the sealing plate 42 and the housing 12. In the first position, the sealing plate 42 engages the static seals 44, 46 and the working fluid is retained within the housing 12. When the compressor is activated, the shaft 22 is translated by the coil 26 from the first position to a second position at which the sealing plate 42 is disengaged from the static seals 44, 46. Conventional dynamic seals 28 retain the working fluid when the cooling system 10 is in operation. Thus, the invention provides a sealing arrangement which extends the operating life of the cooling system by effectively retaining the working fluid thereof.
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Denson-Low W. K.
DePumpo D. G.
Gudmestad Terje
Hughes Aircraft Company
Shoap Allan N.
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