US3726573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High rigidity fluid bearings
Assignee: Toyoda Koki KK
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Filing: 1971-04-07
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Granted: 1973-04-10
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Expires: 1991-04-07
Abstract
Abstract In a high rigidity fluid bearing of the type wherein a rotating shaft is supported by fluid under pressure contained in fluid pockets formed in the bearing surface in spaced apart relationship in the circumferential direction and surrounded by raised lands, the axial width of the lands is made narrower on the load side than on the no load side so as to cause more pressurized fluid to flow out from the pockets over the load side lands than over the no load side lands.
Inventors
- 👤 K Unno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:59
CPC Classifications
F; F16; F16C; F16C32/00; F16C32/06; F16C32/0629; F16C32/064; F16C32/0651; F16C32/0659; F16C2322/00; F16C2322/39
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
159 words
In a high rigidity fluid bearing adapted to rotatably support a rotating shaft subject to a radial load and of the type including a bearing surface provided with a plurality of fluid pockets spaced apart in the circumferential direction and a plurality of raised lands respectively surrounding said pockets to define small clearances between said shaft and said bearing surface and wherein fluid under pressure is admitted into said pockets through throttle means, the improvement that comprises exit lands formed in said pockets on the load side only, each one of said exit lands defining a small clearance with said shaft and being provided with an outlet port for flowing out the large portion of said pressurized fluid, and the axial width of said lands formed in size so as to cause more pressurized fluid of the remainder to flow out from said pockets through said clearances on said load side lands than on said no load side lands.
Claim 2
Dependent Claim
159 words
In a high rigidity fluid bearing adapted to rotatably support a rotating shaft subject to a radial load and of the type including a bearing surface provided with a plurality of fluid pockets spaced apart in the circumferential direction and a plurality of raised lands respectively surrounding said pockets to define small clearances between said shaft and said bearing surface and wherein fluid under pressure is admitted into said pockets through throttle means, the improvement that comprises exit lands formed in said pockets on the load side only, each one of said exit lands defining a small clearance with said shaft and being provided with an outlet port for flowing out the large portion of said pressurized fluid, and the axial width of said lands formed in size so as to cause more pressurized fluid of the remainder to flow out from said pockets through said clearances on said load side lands than on said no load side lands.
Claim 3
Dependent Claim
29 words
The high rigidity fluid bearing according to claim 1 wherein the axial width of said lands is made narrower on the load side than on the no load side.
Claim 4
Dependent Claim
20 words
The high rigidity bearing according to claim 1 wherein said pressurized fluid is admitted into said fluid pockets through throttles.
Claim 5
Dependent Claim
129 words
The high rigidity bearing according to claim 1 which comprises a pair of coaxial bearing metals disposed on the opposite sides of a flange of said shaft with small clearances between the inner ends of said bearing metals and said flange, each one of said bearing metals being provided with a plurality of fluid pockets spaced apart in the circumferential direction, a plurality of raised lands surrounding said respective fluid pockets, the axial width of said lands being smaller on the load side than on the no load side of said bearing, a plurality of circumferentially spaced apart exit lands with exit ports, being provided on the load side of each fluid pocket, and another circumferential raised land on the inner end of said bearing metal near said flange.
Claim 6
Dependent Claim
54 words
The high rigidity fluid bearing according to claim 4 wherein an aNnular groove is provided between the no load side of said lands and said circumferential raised land and an exit port is provided on annular groove for discharging the pressurized fluid passed through the clearance between said shaft and said circumferential raised land.
References Cited (Backward Citations)
US3454311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |