Title:
IMPROVED SPLINE STRESS DISTRIBUTION
Document Type and Number:
WIPO Patent Application WO/2010/141490
Kind Code:
A3
Abstract:
A connection between a shaft and a coupling that preferably involves involute shaped splines is designed to reduce stress from torque applied to the shaft by a drive motor. To avoid stress concentration at the mouth of the coupling on startup, the shaft splines are made to taper from the shaft end down to the spline end. As a result, the initial contact with the coupling splines occurs within the coupling and removed from it mouth. The shaft is allowed to elastically twist in response to the applied torque as the contact area increases with shaft twisting and the contact line moves toward the mouth of the coupling. Stress concentration that formerly occurred at the coupling mouth is alleviated as some shaft elastic twist occurs without adding stress to the shaft splines until coupling contact is made.
More Like This:
| WO/2001/081769 | FEED PUMP |
Inventors:
BROWN DONN J (US)
WILSON BROWN L (US)
WILSON BROWN L (US)
Application Number:
PCT/US2010/036934
Publication Date:
February 24, 2011
Filing Date:
June 01, 2010
Export Citation:
Assignee:
BAKER HUGHES INC (US)
BROWN DONN J (US)
WILSON BROWN L (US)
BROWN DONN J (US)
WILSON BROWN L (US)
International Classes:
F04D29/20; E21B17/02; F04B17/00; F04D29/044
Foreign References:
| JP2002174197A | 2002-06-21 | |||
| KR100232069B1 | 1999-12-01 | |||
| KR20100065655A | 2010-06-17 |
Other References:
See also references of EP 2440790A4
Attorney, Agent or Firm:
HENDRYX, Thomas, N. (P.O. Box 4740Houston, TX, US)
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