US3810528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine with lubricant tanks in centre body and housing
Assignee: Northrop Grumman Properties Ltd
•
Filing: 1972-11-02
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Granted: 1974-05-14
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Expires: 1992-11-02
Abstract
Abstract A turbine power unit includes a peripherally bladed turbine wheel coupled to the input member of a gear box which is accommodated within a casing. The casing in use contains oil which is supplied to the bearings of the gear box by a pump. The device also includes a centre body which forms the motive fluid stream into annular form, the centre body also being hollow and constituting an oil reservoir. An additional reservoir is provided intermediate the turbine wheel and the gearbox, the two reservoirs serving to receive a substantial portion of the oil contained within the casing when the device is in use.
Inventors
- 👤 C Morley
- 👤 B Stevenson
- 👤 L Bedder
- 👤 A Wells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:12
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/18
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
174 words
A turbine power unit comprising a turbine wheel having blades mounted on its periphery, a ring of guide vanes disposed to direct the motive fluid on to the blades, an inlet casing structure defining an inlet for the motive fluid, a centre body disposed in the inlet said centre body forming the fluid stream entering the inlet into annular form, a housing, an input shaft located in the housing, bearings for supporting the input shaft, said turbine wheel being Mounted on said input shaft, an output shaft extending from the housing, a reduction gearbox mounted within the housing and interconnecting the input and output shafts, pump means for supplying lubricant to the bearings and gear reduction mechanism, a lubricant tank defined by the aforesaid centre body and a further lubricant tank positioned in the space defined between the housing and the turbine wheel, passage means interconnecting said tanks, and restricted passage means through which some of the lubricant contained in the housing is displaced into said tanks during the initial operation of the turbine.
Claim 2
Dependent Claim
174 words
A turbine power unit comprising a turbine wheel having blades mounted on its periphery, a ring of guide vanes disposed to direct the motive fluid on to the blades, an inlet casing structure defining an inlet for the motive fluid, a centre body disposed in the inlet said centre body forming the fluid stream entering the inlet into annular form, a housing, an input shaft located in the housing, bearings for supporting the input shaft, said turbine wheel being Mounted on said input shaft, an output shaft extending from the housing, a reduction gearbox mounted within the housing and interconnecting the input and output shafts, pump means for supplying lubricant to the bearings and gear reduction mechanism, a lubricant tank defined by the aforesaid centre body and a further lubricant tank positioned in the space defined between the housing and the turbine wheel, passage means interconnecting said tanks, and restricted passage means through which some of the lubricant contained in the housing is displaced into said tanks during the initial operation of the turbine.
Claim 3
Dependent Claim
32 words
A power unit as claimed in claim 1 including a bleed hole from one of the tanks to the interior of the housing and through which lubricant is returned to the housing.
Claim 4
Dependent Claim
22 words
A power unit as claimed in claim 2 in which said bleed hole is positioned near the bottom of said one tank.
Claim 5
Dependent Claim
23 words
A power unit as claimed in claim 3 including means venting the upper portions of said tanks to the interior of the housing.
References Cited (Backward Citations)
US2474258A
Cited
GB658044A
Cited
GB659569A
Cited
US2874803A
Cited
US3074688A
Cited
US3248880A
Cited
US3618711A
Cited
US3692146A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-13 | 1977-11-12 | 1978-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-13 | 1981-11-12 | 1982-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-13 | 1985-11-12 | 1986-05-14 | $7700.00 | Window Closed / Lapsed |