GB946639A - Improvements relating to hydraulic gear pumps and motors - Google Patents
Improvements relating to hydraulic gear pumps and motorsInfo
- Publication number
- GB946639A GB946639A GB1499362A GB1499362A GB946639A GB 946639 A GB946639 A GB 946639A GB 1499362 A GB1499362 A GB 1499362A GB 1499362 A GB1499362 A GB 1499362A GB 946639 A GB946639 A GB 946639A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bushes
- gears
- inlet
- outlet
- 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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
-
- 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
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/0023—Axial sealings for working fluid
- F04C15/0026—Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type machines or pumps, e.g. gear machines or pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Motors (AREA)
- Rotary Pumps (AREA)
Abstract
946,639. Gear pumps and motors. ROBERT BOSCH G.m.b.H. April 18, 1962 [April 20, 1961], No. 14993/62. Heading F1F. The shafts 6 and 7 of a reversible gear pump or motor are mounted at each end in bushes 8 which each have longitudinal slots 12, 13, extending through the radial thickness of the bushes, and four other slots 18, 20 which extend part way through the radial thickness of the bushes to form, with peripheral slots 60, resiliently hingeable portions such as 15, 16, 17. Pressure zones, such as 23, 24, defined by O-rings are formed on the portions such as 15, 16, 17 and each one communicates with the inlet or outlet on the opposite side of the pump or motor, so that the gears are urged to the high pressure side. Plugs 30, 35 are fitted in chambers in each side of the bushes, and urged against the casing walls by fluid pressure from the far side and near side respectively. The plugs 30 balance the movement on the bushes due to the difference between inlet and outlet pressure, and the plugs 35 are provided to prevent leakage. A pressure zone 53 is provided in the end face of each bush remote from the gears to urge the bushes against the gears; one of these zones is connected to the inlet or outlet passage 2 and the other to the passage 3. Alternatively, one or both bushes may have a zone connected by non-return valves to the inlet and outlet. The peripheral wall of the chamber is cut away at 61 and 62, where it surrounds the gears.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB0062200 | 1961-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB946639A true GB946639A (en) | 1964-01-15 |
Family
ID=6973488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1499362A Expired GB946639A (en) | 1961-04-20 | 1962-04-18 | Improvements relating to hydraulic gear pumps and motors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB946639A (en) |
-
1962
- 1962-04-18 GB GB1499362A patent/GB946639A/en not_active Expired
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