US3910651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft bearing assemblies
Assignee: Rolls Royce PLC
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Filing: 1973-11-13
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Granted: 1975-10-07
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Expires: 1993-11-13
Abstract
Abstract A shaft bearing assembly is designed to allow for transverse movements of the shaft relative to fixed structure, and the bearing seal is constructed in two parts, a first part between relatively rotating components of the assembly, and a second part between relatively non-rotating components of the assembly, the second part being adapted to allow for the transverse movements of the shaft.
Inventors
- 👤 Bryan Robert Pearce
- 👤 Douglas William Daniels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:17
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/16; F01D25/162; F01D25/164; F01D21/00; F01D21/04; F01D21/045; F16; F16C; F16C27/00; F16C27/04; F16C27/045; F16C33/00; F16C33/72; F16C33/76; F16C33/80; F16C33/805; F16C35/00; F16C35/04; F16C35/06; F05; F05B; F05B2260/00; F05B2260/30; F05B2260/301; F05B2260/3011; F16C19/00; F16C19/02; F16C19/04; F16C19/06; F16C2360/00; F16C2360/23
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
139 words
A shaft bearing assembly comprising a shaft member, a structural member and a bearing for supporting the shaft member for rotation relative to the structural member, the bearing having first and second races, means for mounting one each of the bearing races on the shaft member and the structural member respectively, said mounting means including means for allowing relative transverse movement between one of the races and its respective member and means for resisting said movement, wherein there is provided a first seal having components connected for movemenet with each of the bearing races for form a seal across the bearing, and a second seal having components respectively connected to that bearing race and that member between which said relative movement takes place, said second seal including means whereby the transverse movement can be accommodated while maintaining the seal.
Claim 2
Dependent Claim
139 words
A shaft bearing assembly comprising a shaft member, a structural member and a bearing for supporting the shaft member for rotation relative to the structural member, the bearing having first and second races, means for mounting one each of the bearing races on the shaft member and the structural member respectively, said mounting means including means for allowing relative transverse movement between one of the races and its respective member and means for resisting said movement, wherein there is provided a first seal having components connected for movemenet with each of the bearing races for form a seal across the bearing, and a second seal having components respectively connected to that bearing race and that member between which said relative movement takes place, said second seal including means whereby the transverse movement can be accommodated while maintaining the seal.
Claim 3
Dependent Claim
33 words
A shaft bearing assembly according to claim 1 and in which the shaft bearing assembly supports the fan of a ducted fan gas turbine engine and the structural member is a static member.
Claim 4
Dependent Claim
18 words
A shaft bearing assembly according to claim 1 and in which the first seal is a labyrinth seal.
Claim 5
Dependent Claim
34 words
A shaft bearing assembly according to claim 1 and in which the first seal comprises a pair of labyrinth sEals in series, and means are provided for supplying air under pressure between the seals.
Claim 6
Dependent Claim
18 words
A shaft bearing assembly according to claim 1 and in which the second seal is a ring seal.
Claim 7
Dependent Claim
22 words
A shaft bearing assembly according to claim 1 and in which the second seal comprises a pair of ring seals in series.
Claim 8
Dependent Claim
40 words
A shaft bearing assembly according to claim 1 and in which the bearing race which is allowed transverse movements relative to its respective structure carries a member which is common to both seals and carries one component of each seal.
Claim 9
Dependent Claim
31 words
A shaft bearing assembly according to claim 1 and in which the bearing race which is allowed transverse movements relative to its respective structure is the outer race of the bearing.
Claim 10
Dependent Claim
33 words
A shaft bearing assembly according to claim 1 and in which the means resisting the relative transverse movement between the bearing race and its respective structure comprises a hydro-dyanmic squeeze film of oil.
Claim 11
Dependent Claim
29 words
A shaft bearing assembly according to claim 1 and inwhich the means for resisting the relative transverse movement between the bearing race and its respective structure comprises a spring.
Claim 12
Dependent Claim
165 words
A shaft bearing assembly comprising: a shaft member, a structural member, a bearing supporting said shaft member for rotation relative to said structural member, said bearing having first and second races, means for mounting said first and second bearing races on said shaft and said structural members, respectively, said mounting means including means for allowing relative transverse movement between one of said races and its respective member and means for resisting said movement, a first seal connected for movement with each of said bearing races to form a seal across said bearing, a second seal connected to the bearing race and member between which said relative movement takes place, said second seal including means whereby said transverse movement can be accommodated while maintaining said seal, said structural member defining a cavity large enough to allow said bearing race to move transversely under both normal out-of-balance loads and excessive loads, and means for damping both small and large movements of the race produced by said loads.
Claim 13
Dependent Claim
165 words
A shaft bearing assembly comprising: a shaft member, a structural member, a bearing supporting said shaft member for rotation relative to said structural member, said bearing having first and second races, means for mounting said first and second bearing races on said shaft and said structural members, respectively, said mounting means including means for allowing relative transverse movement between one of said races and its respective member and means for resisting said movement, a first seal connected for movement with each of said bearing races to form a seal across said bearing, a second seal connected to the bearing race and member between which said relative movement takes place, said second seal including means whereby said transverse movement can be accommodated while maintaining said seal, said structural member defining a cavity large enough to allow said bearing race to move transversely under both normal out-of-balance loads and excessive loads, and means for damping both small and large movements of the race produced by said loads.
References Cited (Backward Citations)
US3357757A
Cited
US3473853A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |