US3597026A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugally pressurized liquid hydrodynamic bearing
Assignee: Northrop Grumman Corp
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Filing: 1970-03-19
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Granted: 1971-08-03
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Expires: 1990-03-19
Abstract
Abstract In a bearing assembly comprising a block housing a flanged shaft, one of which is rotatable while the other is fixed, a fluid bearing is supplied to all spaces between the moving and fixed surfaces by virtue of centrifugal pressure differential during rotation. The rotatable member is provided with a reservoir for the fluid. During rotation, fluid flows from the reservoir to the space between the block and the outer circumference of the flange and then through a fluid passage in the fixed member to a fluid passage along the central axis of the shaft and the space between the block and the end of the shaft in the block.
Inventors
- 👤 John J Jarosh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:44
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/10; F16C33/1025; F16C33/103
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
140 words
Apparatus comprising a block and a shaft having a flange, said shaft and flange fitting in a journal in said block so that one end of the shaft extends from the block, either of said block or shaft being rotatable and having a reservoir for a bearing fluid and the other being fixed, a fluid passage connecting said reservoir and the space between the block and the outer circumference of the flange, a second fluid passage in the fixed block or shaft to provide fluid flow between said space and the central axis of the shaft by virtue of centrifugal pressure differential during rotation and a fluid passage along the central axis of the shaft to permit fluid flow between the center of the shaft and the space between the block and the end of the shaft in the block.
Claim 2
Dependent Claim
140 words
Apparatus comprising a block and a shaft having a flange, said shaft and flange fitting in a journal in said block so that one end of the shaft extends from the block, either of said block or shaft being rotatable and having a reservoir for a bearing fluid and the other being fixed, a fluid passage connecting said reservoir and the space between the block and the outer circumference of the flange, a second fluid passage in the fixed block or shaft to provide fluid flow between said space and the central axis of the shaft by virtue of centrifugal pressure differential during rotation and a fluid passage along the central axis of the shaft to permit fluid flow between the center of the shaft and the space between the block and the end of the shaft in the block.
Claim 3
Dependent Claim
10 words
The apparatus of claim 1 wherein the block is rotatable.
Claim 4
Dependent Claim
10 words
The apparatus of claim 1 wherein the shaft is rotatable.
Claim 5
Dependent Claim
16 words
The apparatus of claim 1 wherein the reservoir contains a sponge to retain the bearing fluid.
Claim 6
Dependent Claim
195 words
Apparatus comprising a rotatable block and a fixed shaft having a flange, said shaft and flange fitting in a journal in said block so that one end of the shaft extends from said block, said block having a reservoir containing a bearing fluid, a fluid passage connecting said reservoir and the space between the block and the outer circumference of the flange, a second fluid passage in the fixed shaft to provide fluid flow between said space and the central axis of the shaft by virtue of centrifugal pressure differential during rotation, a third fluid passage along the central axis of the shaft to permit fluid flow between the center of the shaft and the space between the block and the end of the shaft in the block, a beveled thrust plate in said block and a beveled baffle attached to said shaft, both of said plate and baffle being interposed between said flange and said reservoir and the bevels of said thrust plate and baffle forming a passage from the flange surface to thE reservoir to prevent fluid leakage from the journal regardless of position or state of motion of the block and shaft.
Claim 7
Dependent Claim
195 words
Apparatus comprising a rotatable block and a fixed shaft having a flange, said shaft and flange fitting in a journal in said block so that one end of the shaft extends from said block, said block having a reservoir containing a bearing fluid, a fluid passage connecting said reservoir and the space between the block and the outer circumference of the flange, a second fluid passage in the fixed shaft to provide fluid flow between said space and the central axis of the shaft by virtue of centrifugal pressure differential during rotation, a third fluid passage along the central axis of the shaft to permit fluid flow between the center of the shaft and the space between the block and the end of the shaft in the block, a beveled thrust plate in said block and a beveled baffle attached to said shaft, both of said plate and baffle being interposed between said flange and said reservoir and the bevels of said thrust plate and baffle forming a passage from the flange surface to thE reservoir to prevent fluid leakage from the journal regardless of position or state of motion of the block and shaft.
References Cited (Backward Citations)
US1157644A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |