GB1418266A - Pump unloading circuit - Google Patents
Pump unloading circuitInfo
- Publication number
- GB1418266A GB1418266A GB819674A GB819674A GB1418266A GB 1418266 A GB1418266 A GB 1418266A GB 819674 A GB819674 A GB 819674A GB 819674 A GB819674 A GB 819674A GB 1418266 A GB1418266 A GB 1418266A
- Authority
- GB
- United Kingdom
- Prior art keywords
- unloading circuit
- passage
- port
- pump unloading
- pump
- 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
- F04B49/02—Stopping, starting, unloading or idling control
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
Abstract
1418266 Controlling pumps CATERPILLER TRACTOR CO 22 Feb 1974 [5 March 1973] 8196/74 Heading F1A A pump unloading circuit for reducing the torque load on a prime mover 13 during starting comprises a valve 10 with a spool 36 which is moved to the right in the Fig. by a pedal 56 to connect the pump output line 23 to a reservoir 14 through a port 30, passage 28, port 31 and a conduit 24. Normally, lands 38, 39 close the passage 28 and a relief valve 19 controls the system pressure.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US33789073A | 1973-03-05 | 1973-03-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1418266A true GB1418266A (en) | 1975-12-17 |
Family
ID=23322450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB819674A Expired GB1418266A (en) | 1973-03-05 | 1974-02-22 | Pump unloading circuit |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU6517474A (en) |
| GB (1) | GB1418266A (en) |
| ZA (1) | ZA74783B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2342414A1 (en) * | 1976-02-27 | 1977-09-23 | Caterpillar Tractor Co | HYDRAULIC FLUID CIRCUIT |
| US4493188A (en) * | 1979-12-10 | 1985-01-15 | Marsh Mervyn R | Drive transmission means |
| WO2011047749A1 (en) * | 2009-10-20 | 2011-04-28 | Robert Bosch Gmbh | Cold start valve |
-
1974
- 1974-02-04 AU AU65174/74A patent/AU6517474A/en not_active Expired
- 1974-02-06 ZA ZA00740783A patent/ZA74783B/en unknown
- 1974-02-22 GB GB819674A patent/GB1418266A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2342414A1 (en) * | 1976-02-27 | 1977-09-23 | Caterpillar Tractor Co | HYDRAULIC FLUID CIRCUIT |
| US4493188A (en) * | 1979-12-10 | 1985-01-15 | Marsh Mervyn R | Drive transmission means |
| WO2011047749A1 (en) * | 2009-10-20 | 2011-04-28 | Robert Bosch Gmbh | Cold start valve |
Also Published As
| Publication number | Publication date |
|---|---|
| AU6517474A (en) | 1975-08-07 |
| ZA74783B (en) | 1975-01-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19930222 |