GB981844A - Improvements in or relating to hydraulic pumps - Google Patents
Improvements in or relating to hydraulic pumpsInfo
- Publication number
- GB981844A GB981844A GB6649/63A GB664963A GB981844A GB 981844 A GB981844 A GB 981844A GB 6649/63 A GB6649/63 A GB 6649/63A GB 664963 A GB664963 A GB 664963A GB 981844 A GB981844 A GB 981844A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spring
- servomechanism
- feb
- pistons
- towards
- 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
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/06—Control
- F04B1/08—Control regulated by delivery pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/14—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
- F04B1/141—Details or component parts
- F04B1/143—Cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/08—Regulating by delivery pressure
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
- Rotary Pumps (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
981,844. Reciprocating pumps. WEATHERHEAD CO. Feb. 19, 1963 [Feb. 23, 1962], No. 6649/63. Heading F1A. [Also in Division G3] The effective displacement of a multi-cylinder, swashplate pump is varied by axial adjustment of the cylinder block 50 to vary the point in the stroke at which the pistons 62 close the inlet ports 57, 58. The block is urged by a spring 97 towards the maximum delivery position, defined by an adjustable stop 212, and in the opposite direction by a servomechanism 107 (see Division G3) under manual control and with an overriding control operative to limit the delivery pressure. A web 44 positioned by snap rings 45, 46 houses the servomechanism and forms an abutment for springs 66 urging the pistons towards the swashplate 38 which is held against rotation by a stud 39 engaging a channel 41 and is oscillated by a rotary drive plate 25. Discharge to an outlet 93 takes place through a reaction piston 75 held by a light spring 82 against a member 79 which carries a check valve 87 loaded by a spring 88 enclosed in a cage 89. Specifications 952,203 and 981,845 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US175201A US3179061A (en) | 1962-02-23 | 1962-02-23 | Variable displacement pump control |
Publications (1)
Publication Number | Publication Date |
---|---|
GB981844A true GB981844A (en) | 1965-01-27 |
Family
ID=22639356
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB6650/63A Expired GB981845A (en) | 1962-02-23 | 1963-02-19 | Improvements in or relating to hydraulic pumps |
GB6649/63A Expired GB981844A (en) | 1962-02-23 | 1963-02-19 | Improvements in or relating to hydraulic pumps |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB6650/63A Expired GB981845A (en) | 1962-02-23 | 1963-02-19 | Improvements in or relating to hydraulic pumps |
Country Status (5)
Country | Link |
---|---|
US (1) | US3179061A (en) |
CH (2) | CH405935A (en) |
DE (2) | DE1453697A1 (en) |
ES (1) | ES284953A1 (en) |
GB (2) | GB981845A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3298316A (en) * | 1964-04-06 | 1967-01-17 | Budzich Tadeusz | Remote adjustment for pressure compensated pump setting |
DE1928249C3 (en) * | 1969-06-03 | 1981-06-11 | Alfred Teves Gmbh, 6000 Frankfurt | Piston pump |
GB1385702A (en) * | 1971-01-29 | 1975-02-26 | Chamberlain Ind Ltd | Hydraulic motors and the like |
US3910727A (en) * | 1972-09-13 | 1975-10-07 | Valve Syst Int Inc | Metering pump |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2354562A (en) * | 1940-07-06 | 1944-07-25 | American Machine & Metals | Hydraulic testing machine |
US2684630A (en) * | 1950-11-29 | 1954-07-27 | Schweizerische Lokomotiv | Variable delivery force pump |
US2648312A (en) * | 1951-11-28 | 1953-08-11 | Hpm Dev Corp | Control operator for hydraulic pumps |
US2741451A (en) * | 1952-03-04 | 1956-04-10 | Arthur A Welborn | Fluid flow control devices |
US2885174A (en) * | 1953-12-02 | 1959-05-05 | Crane Co | Valve actuating mechanism or the like |
US2930321A (en) * | 1956-07-18 | 1960-03-29 | Borg Warner | Pump |
GB883014A (en) * | 1957-03-30 | 1961-11-22 | Stabilimenti Elettromeccanici | Improvements in or relating to hydraulic remote control arrangements |
US2990781A (en) * | 1957-11-25 | 1961-07-04 | Gen Motors Corp | Wobble plate pump |
US3101977A (en) * | 1958-03-07 | 1963-08-27 | Letourneau Westinghouse Compan | Hydraulic track tensioning means |
-
1962
- 1962-02-23 US US175201A patent/US3179061A/en not_active Expired - Lifetime
-
1963
- 1963-01-25 CH CH94163A patent/CH405935A/en unknown
- 1963-01-25 CH CH94063A patent/CH407751A/en unknown
- 1963-02-08 ES ES284953A patent/ES284953A1/en not_active Expired
- 1963-02-14 DE DE19631453697 patent/DE1453697A1/en active Pending
- 1963-02-14 DE DE19631453696 patent/DE1453696A1/en active Pending
- 1963-02-19 GB GB6650/63A patent/GB981845A/en not_active Expired
- 1963-02-19 GB GB6649/63A patent/GB981844A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1453696A1 (en) | 1969-07-10 |
GB981845A (en) | 1965-01-27 |
US3179061A (en) | 1965-04-20 |
CH407751A (en) | 1966-02-15 |
ES284953A1 (en) | 1963-05-01 |
CH405935A (en) | 1966-01-15 |
DE1453697A1 (en) | 1969-06-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1482671A (en) | Piston-type pumps | |
GB1374524A (en) | Piston pumps | |
GB1466528A (en) | Piston pump | |
GB1170090A (en) | An improved piston pump. | |
GB981844A (en) | Improvements in or relating to hydraulic pumps | |
GB1439504A (en) | Hydraulic or pneumatic device | |
GB1363990A (en) | Variable displacement hydraulic piston pump or motor | |
GB1028003A (en) | Improvements in or relating to reciprocating pumps | |
GB1350712A (en) | Axial piston machines | |
SE311169B (en) | ||
GB922813A (en) | Pump or motor device | |
GB1374538A (en) | Piston pump | |
GB1390520A (en) | Piston pump for hydraulic systems | |
GB1161981A (en) | Pneumatic Motor | |
GB1459553A (en) | Hydraulic mechanisms | |
GB1464146A (en) | Hydraulic jet looms | |
GB1355830A (en) | Hydraulic pumps | |
GB1241481A (en) | Hydraulic pump or motor | |
GB954715A (en) | Hydraulic pumps | |
GB1302163A (en) | ||
GB1466837A (en) | Radial piston machine | |
GB1038017A (en) | Improvements in or relating to piston pumps | |
GB1033333A (en) | Control of variable displacement pumps | |
GB1080001A (en) | Improvements in hydraulic pumping systems having a delivery regulating device | |
GB952203A (en) | Improvements in or relating to reciprocating pumps |