US3765732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Outlet restrictor hydrostatic bearing
Assignee: Individual
•
Filing: 1972-02-28
•
Granted: 1973-10-16
•
Expires: 1992-02-28
Abstract
Abstract An improved structure for outlet restrictor hydrostatic bearings of the tapered, stepped, and grooved clearance types wherein the bearing surfaces are formed on flexible membranes, supported at the edges by raised lands on the shafts and/or the bores, thereby simplifying the manufacturing process and providing improved bearing action after the manner of the flexible membrane bearing.
Inventors
- 👤 G Watt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:15
CPC Classifications
F; F16; F16C; F16C32/00; F16C32/06; F16C32/0629; F16C32/064; F16C32/0651; F16C32/0662; F16C32/0681; F16C32/0685
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
88 words
An outlet restrictor hydrostatic bearing structure comprising a pair of relatively movable bearing members having opposed bearing surfaces separated by a small clearance through which pressurized lubrIcating fluid may be passed to provide bearing action, one of the opposed bearing surfaces being rigid and being shaped so that said clearance converges gradually in the direction of fluid flow, the other opposed bearing surface, except at respective regions of its ends, being compliable and capable, in response to fluid pressure between the opposed bearing surfaces, of enlarging said clearance.
Claim 2
Dependent Claim
88 words
An outlet restrictor hydrostatic bearing structure comprising a pair of relatively movable bearing members having opposed bearing surfaces separated by a small clearance through which pressurized lubrIcating fluid may be passed to provide bearing action, one of the opposed bearing surfaces being rigid and being shaped so that said clearance converges gradually in the direction of fluid flow, the other opposed bearing surface, except at respective regions of its ends, being compliable and capable, in response to fluid pressure between the opposed bearing surfaces, of enlarging said clearance.
Claim 3
Dependent Claim
33 words
An outlet restrictor hydrostatic bearing structure according to claim 1, wherein the compliable bearing surface is defined by a flexible membrane supported at its ends by raised lands of its respective bearing member.
Claim 4
Dependent Claim
36 words
An outlet restrictor hydrostatic bearing structure according to claim 2, wherein the bearing member having the flexible membrane is a journal, while the bearing member having the rigid bearing surface is a housing for the journal.
Claim 5
Dependent Claim
94 words
An outlet restrictor hydrostatic bearing structure according to claim 3, wherein the rigid bearing surface is defined by a generally cylindrical bore through the housing, a portion of said bore intermediate the ends thereof having an annular groove from each side of which the bore tapers slightly towards its ends, the housing having means including a passageway adapted to introduce pressurized lubricating fluid to said annular groove from a fluid source external of said housing, whereby fluid so introduced will flow through the clearance between the bearing surfaces in opposite directions from the groove.
Claim 6
Dependent Claim
33 words
An outlet restrictor hydrostatic bearing structure according to claim 4, wherein the housing is cylindrical and the bore is coaxial therewith, the annular groove being located midway between the ends of the bore.
References Cited (Backward Citations)
FR1089737A
Cited
US3635534A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |