GB1314793A - Hydraulic load control apparatus - Google Patents
Hydraulic load control apparatusInfo
- Publication number
- GB1314793A GB1314793A GB1547271*[A GB1547271A GB1314793A GB 1314793 A GB1314793 A GB 1314793A GB 1547271 A GB1547271 A GB 1547271A GB 1314793 A GB1314793 A GB 1314793A
- Authority
- GB
- United Kingdom
- Prior art keywords
- line
- valve
- spool
- supply
- drain
- 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
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/002—Electrical failure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/2496—Self-proportioning or correlating systems
- Y10T137/2559—Self-controlled branched flow systems
- Y10T137/265—Plural outflows
- Y10T137/2657—Flow rate responsive
- Y10T137/266—Primer valve
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Safety Valves (AREA)
- Multiple-Way Valves (AREA)
- Lifting Devices For Agricultural Implements (AREA)
Abstract
1314793 Hydraulic motor control circuit ROBERT BOSCH GmbH 18 May 1971 [7 July 1970] 15472/71 Heading F1P In an hydraulic circuit controlling a single acting ram 13 connected by a single line 44 to a three position distributing valve 39, the outlet line 37 from the valve 39 is connected to reservoir 36 via a valve 25 controlled by the supply pressure in supply line 18, the valve 25 closing the outlet line in the event of a loss of supply pressure. Valve 25 comprises a spool 24, Fig. 3 movable against a spring 26 by the supply pressure admitted from line 18 to connect line 37 to drain via chambers 23, 22 and line 19, a throttle passage 34 admitting pressure fluid to the right hand side of spool 24 from which it is vented via line 32 and distributing valve 39 when the latter is in the 'lower' 43 or neutral 41 position. Rightward movement of spool 24 also connects line 18 to drain via ports in the spool 24. When distributing valve 39 is in its 'raise' position 42 it closes vent line 32 which results in equalization of the pressures on each side of throttle 34 and spool 24 moves to the left, isolating both supply line 18 and outlet line 37 from drain line 19. A pressure relief valve 17 is included in the circuit.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2033485A DE2033485C3 (en) | 1970-07-07 | 1970-07-07 | Control device for a hydraulic lifting cylinder fed by a pressure medium source |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1314793A true GB1314793A (en) | 1973-04-26 |
Family
ID=5775953
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1547271*[A Expired GB1314793A (en) | 1970-07-07 | 1971-05-18 | Hydraulic load control apparatus |
Country Status (6)
Country | Link |
---|---|
US (1) | US3686838A (en) |
JP (1) | JPS5019714B1 (en) |
BE (1) | BE769584A (en) |
DE (1) | DE2033485C3 (en) |
FR (1) | FR2098206B1 (en) |
GB (1) | GB1314793A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0041199A1 (en) * | 1980-05-29 | 1981-12-09 | Sperry Corporation | Power transmission |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1459684A (en) * | 1973-06-14 | 1976-12-22 | Clayson Nv | Agricultural machines |
US4188772A (en) * | 1977-06-06 | 1980-02-19 | Harrington Manufacturing Company | Hydraulic speed control system for the pick-up reel of a peanut combine |
JPS63131652U (en) * | 1987-02-20 | 1988-08-29 | ||
DE9310932U1 (en) * | 1993-07-21 | 1993-09-30 | Heilmeier & Weinlein Fabrik für Oel-Hydraulik GmbH & Co KG, 81673 München | Electro-hydraulic control device |
US7430846B2 (en) * | 2005-05-10 | 2008-10-07 | Deere & Company | Floating header with integrated float system for use with an agricultural windrower or combine |
US7207164B2 (en) * | 2005-05-10 | 2007-04-24 | Deere & Company | Header hydraulic float suspension |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1020860A (en) * | 1949-06-02 | 1953-02-11 | Hobson Ltd H M | Control system for hydraulic actuators |
US3138908A (en) * | 1960-09-01 | 1964-06-30 | Budzich Tadeusz | Control in harvesting machinery |
US3196599A (en) * | 1963-05-20 | 1965-07-27 | Elmo R Meiners | Automatic height control system |
US3299903A (en) * | 1964-03-26 | 1967-01-24 | Parker Hannifin Corp | Fluid system and valve assembly therefor |
US3623304A (en) * | 1970-03-30 | 1971-11-30 | Int Harvester Co | Hydraulic system for supporting a harvester platform |
-
1970
- 1970-07-07 DE DE2033485A patent/DE2033485C3/en not_active Expired
- 1970-12-08 JP JP45108859A patent/JPS5019714B1/ja active Pending
-
1971
- 1971-05-18 GB GB1547271*[A patent/GB1314793A/en not_active Expired
- 1971-07-06 US US159623A patent/US3686838A/en not_active Expired - Lifetime
- 1971-07-06 BE BE769584A patent/BE769584A/en unknown
- 1971-07-06 FR FR7124701A patent/FR2098206B1/fr not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0041199A1 (en) * | 1980-05-29 | 1981-12-09 | Sperry Corporation | Power transmission |
Also Published As
Publication number | Publication date |
---|---|
DE2033485B2 (en) | 1978-11-02 |
BE769584A (en) | 1971-11-16 |
DE2033485A1 (en) | 1972-01-13 |
FR2098206B1 (en) | 1976-09-17 |
DE2033485C3 (en) | 1979-06-21 |
US3686838A (en) | 1972-08-29 |
FR2098206A1 (en) | 1972-03-10 |
JPS5019714B1 (en) | 1975-07-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |