Patent US3664461A successfully refreshed from Google Patents.
US3664461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil pump for a motor compressor
Assignee: Danfoss AS
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Filing: 1971-03-31
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Granted: 1972-05-23
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Expires: 1991-03-31
Abstract
Abstract The invention relates to a lubricating system for a motor compressor assembly. The assembly has an oil sump and the motor compressor unit has vertically extending shaft means with a central lubricating bore, the lower part of the shaft means being disposed in the sump with the mouth of the bore being in fluid communication with the lubricating oil in the sump. The mouth of the shaft bore is provided with a propeller to effect an increased rate of lubricating oil delivery.
Inventors
- 👤 Hans Ulrik Leffers
- 👤 Bendt Wegge Romer
- 👤 Knud Vagan Valbjorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:53
CPC Classifications
F; F16; F16N; F16N7/00; F16N7/36; F16N7/366; F16N2210/00; F16N2210/10; Y; Y10; Y10S; Y10S417/00; Y10S417/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A motor compressor assembly comprising a housing, a combined motor and compressor unit in said housing, a common frame for said unit, vertical motor and compressor shaft means journalled in said frame, an oil sump in the lower part of said housing, said shaft means having a central lubricating bore in fluid communication with said sump, a generally disk shaped sheet metal propeller mounted in the mouth of said bore, said propeller having a diameter equal to the diameter of said bore and having a plurality of radially extending vanes separated by radially extending slots with each of said vanes being inclined relative to the axis of said bore.
Claim 2
Dependent Claim
109 words
A motor compressor assembly comprising a housing, a combined motor and compressor unit in said housing, a common frame for said unit, vertical motor and compressor shaft means journalled in said frame, an oil sump in the lower part of said housing, said shaft means having a central lubricating bore in fluid communication with said sump, a generally disk shaped sheet metal propeller mounted in the mouth of said bore, said propeller having a diameter equal to the diameter of said bore and having a plurality of radially extending vanes separated by radially extending slots with each of said vanes being inclined relative to the axis of said bore.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |