Title:
TRACTION DRIVE SHAFT SEAL
Document Type and Number:
WIPO Patent Application WO2005071290
Kind Code:
A3
Abstract:
A rotating shaft seal assembly for a shaft supported for rotation within a housing includes a traction drive rotating a seal ring about the shaft at a speed different from the shaft. The seal ring supports a plurality of seal elements rotated at the speed different from the shaft. The reduced speed of the sealing elements and reduced pressure at each seal reduces the seal contact Pressure (P, by the surface velocity of the shaft (V) (=PV level) allowing the use of known sealing materials in applications otherwise not within applicable PV levels.
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Inventors:
DEAN W CLARK
Application Number:
PCT/US2005/001425
Publication Date:
September 09, 2005
Filing Date:
January 14, 2005
Export Citation:
Assignee:
HAMILTON SUNDSTRAND (US)
International Classes:
F01D11/00; F01D25/18; F04D29/12; F16C33/76; F16J15/00; F16J15/34; (IPC1-7): F16J15/00; F16J15/34; F01D11/00; F04D29/12
Foreign References:
| DE4038620A1 | 1992-05-21 | |||
| DE3833690A1 | 1990-04-12 | |||
| US4489951A | 1984-12-25 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 009, no. 084 (M - 371) 13 April 1985 (1985-04-13)
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