Patent US3617148A successfully refreshed from Google Patents.
US3617148A
Expired / Lapsed
US
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Thrust bearing for refrigeration compressor
Assignee: Carrier Corp
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Filing: 1970-05-18
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Granted: 1971-11-02
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Expires: 1990-05-18
Abstract
Abstract The thrust bearing disc is formed in the face side engaging the thrust collar with grooves extending outwardly from the shaft to an annular enclosed space. An oil and refrigerant mixture is supplied to the inner ends of the grooves. The grooved bearing disc in cooperation with the rotating thrust collar serves as a pump, pressurizing the mixture to provide forced lubrication between the collar and the thrust bearing disc and to prevent flashing of the refrigerant from the oil.
Inventors
- 👤 James W Endress
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:51
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/05; F04D29/056; F04D29/057; F04D29/051; F04D29/0513; F16; F16C; F16C17/00; F16C17/10; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/10; F16C33/1025; F16C33/106; F16C33/107; F25; F25B; F25B31/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
18 words
A thrust bearing structure as set forth in claim 1 wherein said discharge passage is of restricted area.
Claim 2
Dependent Claim
20 words
A thrust bearing structure as set forth in claim 1 wherein said discharge passage extends tangentially from said annular space.
Claim 3
Dependent Claim
26 words
A thrust bearing structure as set forth in claim 1 wherein each of said grooves is formed with an inlet portion arranged tangentially to said shaft.
Claim 4
Dependent Claim
22 words
A thrust bearing structure as set forth in claim 1 wherein the outer ends of said grooves are of restricted cross-sectional area.
Claim 5
Dependent Claim
29 words
A thrust bearing structure as set forth in claim 1 wherein said grooves are formed on a curvature to provide for backward leaving of the mixture from the grooves.
Claim 6
Dependent Claim
21 words
A thrust bearing structure as set forth in claim 1 wherein said thrust collar member is fixedly mounted on said shaft.
Claim 7
Dependent Claim
19 words
Thrust bearing structure as set forth in claim 1 wherein said grooves are formed in said thrust bearing member.
Claim 8
Dependent Claim
63 words
A thrust bearing structure as set forth in claim 9 wherein an annular sealing member is mounted in said support in said annular space, said sealing member encircling said one of such members and having sealing engagement with the periphery thereof. 10 A thrust bearing structure as set forth in claim 1 wherein said grooves are formed in the other of said members.
References Cited (Backward Citations)
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Cited
US1065732A
Cited
US1295621A
Cited
US1990059A
Cited
US2954157A
Cited
US3226012A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |