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US4424665A
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Lubricating system for a turbomachine including a method of operating same
Assignee: Elliott Turbomachinery Co Inc
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Filing: 1981-07-02
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Granted: 1984-01-10
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Expires: 2001-07-02
Abstract
Abstract A lubrication system for a turbomachine includes a primary pump operatively connected to the rotor of the turbomachine. The system further includes independently driven stand-by pump means for maintaining lubricating oil flow to the turbomachine when the primary pump is unable to deliver the oil as required. The system further includes a by-pass connecting the primary pump outlet to the oil reservoir. The by-pass is activated for permitting oil flow from the primary pump outlet to the reservoir when the secondary oil pump is activated.
Inventors
- 👤 Neil A. Guest
- 👤 James F. Krisner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:42
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/18; F01D25/20
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
86 words
A method of operating a lubricating oil system for a turbomachine having a primary lubricating oil pump operatively connected to the rotor of the turbomachine and an independently driven standby lubricating oil pump comprising the steps of: sensing that the standby oil pump is activated for delivering lubricating oil from an oil reservoir to a turbomachine; and delivering at least a portion of the oil discharged from the primary oil pump to the oil reservoir in response to the sensed operation of the standby oil pump.
Claim 2
Independent Claim
86 words
A method of operating a lubricating oil system for a turbomachine having a primary lubricating oil pump operatively connected to the rotor of the turbomachine and an independently driven standby lubricating oil pump comprising the steps of: sensing that the standby oil pump is activated for delivering lubricating oil from an oil reservoir to a turbomachine; and delivering at least a portion of the oil discharged from the primary oil pump to the oil reservoir in response to the sensed operation of the standby oil pump.
Claim 3
Dependent Claim
56 words
A method of operating a lubricating oil system in accordance with claim 1 further including: sensing the temperature of the lubricating oil discharged from the primary oil pump; and delivering at least a portion of the oil discharged from the primary oil pump to the oil reservoir when the sensed oil temperature exceeds a predetermined level.
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) | 1987-01-09 | 1987-07-11 | 1988-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-09 | 1991-07-11 | 1992-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-09 | 1995-07-11 | 1996-01-10 | $7700.00 | Window Closed / Lapsed |