US3778202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power transmission
Assignee: Vickers Inc
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Filing: 1972-02-17
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Granted: 1973-12-11
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Expires: 1992-02-17
Abstract
Abstract A gear pump or motor mounts the gears in the body by means of shaft journals projecting on opposite sides of each gear into bearings in the body. The bearing portions of the body are formed as cantilevers which are free to deflect under fluid pressure forces and follow the deflection of the shaft journals under the same forces. This reduces the localized loadings at the corners of the bearings and enables the device to operate at higher pressures than is possible with journal bearings solidly supported in the body.
Inventors
- 👤 A Lindsay
- 👤 R Imperati
- 👤 P Becker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:44
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A gear pump or motor comprising a plurality of intermeshing gears, each having shafts projecting from opposite ends thereof to provide supporting journals, a body enclosing the gears and providing bearings for the journals, inlet and outlet passages in the body communicating with opposite sides of the meshing point of the gears, each of the bearings in the body being formed as a cantilever supported in the body at the outer end of its respective shaft and free to flex toward the inlet passage at the inner end of the shaft, whereby the pressure forces causing deflection of the shafts will cause corresponding deflection of the bearings and localized loadings of the bearings are reduced.
Claim 2
Dependent Claim
115 words
A gear pump or motor comprising a plurality of intermeshing gears, each having shafts projecting from opposite ends thereof to provide supporting journals, a body enclosing the gears and providing bearings for the journals, inlet and outlet passages in the body communicating with opposite sides of the meshing point of the gears, each of the bearings in the body being formed as a cantilever supported in the body at the outer end of its respective shaft and free to flex toward the inlet passage at the inner end of the shaft, whereby the pressure forces causing deflection of the shafts will cause corresponding deflection of the bearings and localized loadings of the bearings are reduced.
References Cited (Backward Citations)
US3602616A
Cited
US3574492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-10 | 1977-06-11 | 1977-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-10 | 1981-06-11 | 1981-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-10 | 1985-06-11 | 1985-12-11 | $7700.00 | Window Closed / Lapsed |