GB1177922A - Gear Pumps and Motors - Google Patents
Gear Pumps and MotorsInfo
- Publication number
- GB1177922A GB1177922A GB699366A GB699366A GB1177922A GB 1177922 A GB1177922 A GB 1177922A GB 699366 A GB699366 A GB 699366A GB 699366 A GB699366 A GB 699366A GB 1177922 A GB1177922 A GB 1177922A
- Authority
- GB
- United Kingdom
- Prior art keywords
- groove
- gear
- gears
- bush
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0088—Lubrication
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
1,177,922. Rotary positive-displacement pumps and motors. DOWTY HYDRAULIC UNITS Ltd. May 9, 1967 [Feb.17, 1966], No.6993/66. Heading F1F. In a rotary positive-displacement hydraulic pump, or motor, of the externally-meshing gear-type, pressure-loaded bearing-bushes 20-- 23 for shafts 16--19 carrying a pair of gears 14, 15 are lubricated by small quantities of working fluid at low-pressure entering a groove 48 in each bush through a radial slot 46, or 47, in the face of the bush adjacent the respective gear and an annular groove 38, 39, 40 or 41 in the corresponding shaft, the slot aforesaid being located adjacent a low-pressure port for said fluid. The working fluid enters each of the slots 46, 47 whenever one of the gear-tooth spaces is in register therewith. To ensure proper lubrication, a groove 50 in each bush is connected to the associated groove 48 by a further groove 53 and to another groove 55 by a chamber 36, 37, 42 or 43 and a channel 54, the groove 55 being situated such that suction is effected therein by the gear-teeth on each gear that are disengaging the gear-tooth spaces on the other gear. Pressureloading is effected by chambers 34, 35 connected to the high-pressure side of the gears and sealed by rings 30, 31 located eccentrically by projections 28, 29 to distribute axial thrust in accordance with the hydraulic gradient across the gears. The bushes 20, 22 and 21, 23 may be rendered integral with each other; and each of the grooves 53 may be replaced by at least one helical groove. There may be more than two gears.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB699366A GB1177922A (en) | 1966-02-17 | 1966-02-17 | Gear Pumps and Motors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB699366A GB1177922A (en) | 1966-02-17 | 1966-02-17 | Gear Pumps and Motors |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1177922A true GB1177922A (en) | 1970-01-14 |
Family
ID=9824592
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB699366A Expired GB1177922A (en) | 1966-02-17 | 1966-02-17 | Gear Pumps and Motors |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1177922A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2169351A (en) * | 1985-01-08 | 1986-07-09 | Dana Corp | Lubrication system for a rotary fluid-flow device |
US9482225B2 (en) | 2012-06-04 | 2016-11-01 | Honeywell International Inc. | Gear pump, pumping apparatus including the same, and aircraft fuel system including gear pump |
-
1966
- 1966-02-17 GB GB699366A patent/GB1177922A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2169351A (en) * | 1985-01-08 | 1986-07-09 | Dana Corp | Lubrication system for a rotary fluid-flow device |
FR2577010A1 (en) * | 1985-01-08 | 1986-08-08 | Dana Corp | LOW PRESSURE LUBRICATION SYSTEM FOR FLUID DEVICE |
US9482225B2 (en) | 2012-06-04 | 2016-11-01 | Honeywell International Inc. | Gear pump, pumping apparatus including the same, and aircraft fuel system including gear pump |
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