Title:
BEARINGS FOR POD PROPULSION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2010/022954
Kind Code:
A3
Abstract:
An improved bearing assembly includes one unique shaft washer (158) rather than using separate forward and aft shaft washers as in the prior art; a slight lengthening of the forward roller (174) as compared to the aft roller (176); an increase in the diameter of the forward roller relative to the aft roller; an increase in the number of rollers; improved materials, particularly in the shaft washer (158) where fewer inclusions are present in the metal; and an osculation configured to provide less space and unconstrained movement between the rollers and runways. The improvements result in decreased movement or play between the shaft washers, the bearings/rollers, and the outer rings. The improvements and changes provide a compact design that fits within existing pod propulsion systems.
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Inventors:
LOENNGREN STIG (SE)
Application Number:
PCT/EP2009/006230
Publication Date:
June 03, 2010
Filing Date:
August 27, 2009
Export Citation:
Assignee:
ROLLS ROYCE AB (SE)
LOENNGREN STIG (SE)
LOENNGREN STIG (SE)
International Classes:
F16C19/38; B63H23/32; F16C19/56; F16C23/08; F16C33/60; F16C35/06; F16C35/073
Foreign References:
| EP1870606A1 | 2007-12-26 | |||
| DE102004047881A1 | 2006-04-06 | |||
| US6309108B1 | 2001-10-30 | |||
| US2147787A | 1939-02-21 |
Other References:
See also references of EP 2329158A2
Attorney, Agent or Firm:
STICHT, Andreas (Thomas-Wimmer-Ring 15, München, DE)
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