ES422788A1 - Pressure graduated control valve - Google Patents

Pressure graduated control valve

Info

Publication number
ES422788A1
ES422788A1 ES422788A ES422788A ES422788A1 ES 422788 A1 ES422788 A1 ES 422788A1 ES 422788 A ES422788 A ES 422788A ES 422788 A ES422788 A ES 422788A ES 422788 A1 ES422788 A1 ES 422788A1
Authority
ES
Spain
Prior art keywords
slot
port
closed position
valve
control valve
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
Application number
ES422788A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fiat Allis Construction Machinery Inc
Original Assignee
Fiat Allis Construction Machinery Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fiat Allis Construction Machinery Inc filed Critical Fiat Allis Construction Machinery Inc
Publication of ES422788A1 publication Critical patent/ES422788A1/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D11/00—Steering non-deflectable wheels; Steering endless tracks or the like
    • B62D11/02—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides
    • B62D11/06—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source
    • B62D11/10—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source using gearings with differential power outputs on opposite sides, e.g. twin-differential or epicyclic gears
    • B62D11/14—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source using gearings with differential power outputs on opposite sides, e.g. twin-differential or epicyclic gears differential power outputs being effected by additional power supply to one side, e.g. power originating from secondary power source
    • B62D11/18—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source using gearings with differential power outputs on opposite sides, e.g. twin-differential or epicyclic gears differential power outputs being effected by additional power supply to one side, e.g. power originating from secondary power source the additional power supply being supplied hydraulically
    • 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
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/8667—Reciprocating valve
    • Y10T137/86694—Piston valve
    • Y10T137/86702—With internal flow passage
    • 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
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/8667—Reciprocating valve
    • Y10T137/86694—Piston valve
    • Y10T137/8671—With annular passage [e.g., spool]
    • 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
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86718—Dividing into parallel flow paths with recombining
    • Y10T137/86734—With metering feature

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Multiple-Way Valves (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Safety Valves (AREA)

Abstract

An axial slot with enlarged end openings is formed in a valve spool of a control valve having inlet, service and exhaust ports spaced axially along the valve spool bore. The axial slot always communicates with the service port and extends axially a sufficient distance to permit communication between all three ports as the valve spool is moved from its closed position to its open position. In the closed position one end of the slot is blocked and the other opens into the exhaust port. In the open position said one end of the slot is open to the inlet port and the other end of the slot is blocked from communication with the exhaust port. The valve provides rapid pressure rises in the service port during initial and final movements of the spool from its closed position to its open position.
ES422788A 1973-02-01 1974-01-30 Pressure graduated control valve Expired ES422788A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US32876073A 1973-02-01 1973-02-01

Publications (1)

Publication Number Publication Date
ES422788A1 true ES422788A1 (en) 1976-05-01

Family

ID=23282322

Family Applications (1)

Application Number Title Priority Date Filing Date
ES422788A Expired ES422788A1 (en) 1973-02-01 1974-01-30 Pressure graduated control valve

Country Status (9)

Country Link
US (1) US3765454A (en)
JP (1) JPS49106028A (en)
BR (1) BR7400746D0 (en)
CA (1) CA991951A (en)
DE (1) DE2403430A1 (en)
ES (1) ES422788A1 (en)
FR (1) FR2216495B1 (en)
IT (1) IT1004305B (en)
SE (1) SE403398B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4122867A (en) * 1975-01-06 1978-10-31 International Harvester Company Hydraulic valve with open center metering notches
DE2604108A1 (en) * 1975-02-04 1976-08-05 Caterpillar Tractor Co Choke slot for valve piston - has reduced diameter section and adjacent cross piece to control hydraulic flow (BE280776)
US4230152A (en) * 1978-01-16 1980-10-28 Fiat-Allis Construction Machinery, Inc. Multi-function control valve
JPS5825179B2 (en) * 1978-02-17 1983-05-26 トヨタ自動車株式会社 throttle control valve
WO1980001940A1 (en) * 1979-03-05 1980-09-18 Mcwilliams O Balanced spool valve
HU180152B (en) * 1980-07-03 1983-02-28 Danuvia Koezponti Szeszam Es K Hidraulic apparatus for controlling energy flow
GB8303407D0 (en) * 1983-02-08 1983-03-16 Tectron Eng Ltd Fuel injectors
US4676351A (en) * 1986-01-09 1987-06-30 Fiatallis Europe, S.P.A. Hydraulic operated control system to apply vehicle brakes
CN104047972B (en) * 2014-06-19 2017-01-18 第一拖拉机股份有限公司 Pressure control valve of wheeled tractor

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2986165A (en) * 1956-01-23 1961-05-30 Cleveland Pneumatic Ind Inc Balanced slide valve
US3004555A (en) * 1957-02-19 1961-10-17 Borg Warner Valves
DE1120230B (en) * 1958-05-16 1961-12-21 Karl Marx Stadt Maschf Control slide with rotatable piston for fine adjustment, especially the movement of working pistons
US2971536A (en) * 1958-06-26 1961-02-14 Caterpillar Tractor Co Hydraulic control valve throttling mechanism
US3148703A (en) * 1961-12-15 1964-09-15 Robertshaw Controls Co Rotary pneumatic pressure divider
US3176722A (en) * 1962-08-06 1965-04-06 Borg Warner Hydraulic valve device
GB1130898A (en) * 1964-11-21 1968-10-16 Dowty Hydraulic Units Ltd Slide valves
US3507303A (en) * 1967-07-24 1970-04-21 Sanders Associates Inc Linear pressure differential valve
US3556155A (en) * 1969-01-24 1971-01-19 Caterpillar Tractor Co Variable flow-modulated valve
BE759150A (en) * 1969-11-19 1971-04-30 Fujitsu Ltd ROTARY PILOT VALVE

Also Published As

Publication number Publication date
CA991951A (en) 1976-06-29
JPS49106028A (en) 1974-10-08
BR7400746D0 (en) 1974-10-29
FR2216495B1 (en) 1979-10-19
SE403398B (en) 1978-08-14
FR2216495A1 (en) 1974-08-30
DE2403430A1 (en) 1974-08-08
IT1004305B (en) 1976-07-10
US3765454A (en) 1973-10-16

Similar Documents

Publication Publication Date Title
GB883032A (en) Improvements in fluid control valves
JPS5332430U (en)
IE41369B1 (en) Apparatus for transferring a finely-divided solid material between chambers at different pressures
ES422788A1 (en) Pressure graduated control valve
GB1511233A (en) Gas valve mechanisms
ES422415A1 (en) Demountable valve
ES370591A1 (en) Icecream dispenser
ES222084U (en) Shutoff and exhaust valve for air brakes
GB1530566A (en) Valves
JPS5578869A (en) Fluid control valve
GB919145A (en) Three-way slide valve with adjustable overlap
SE326923B (en)
GB1249484A (en) A valve arrangement comprising a valve body and a throttle member
GB1270958A (en) A valve arrangement
GB911729A (en) Improvements in or relating to hydraulic control valves
GB2094445A (en) Selector valve
GB1071620A (en) Fluid control valves
IE34853B1 (en) Mixing valve
GB1289995A (en)
GB1125127A (en) Improvements in or relating to fluid control valves
JPS5525561A (en) Oil pressure type valve lift device
GB1072141A (en) Improvements in or relating to spool valves and slide valves
GB1309126A (en) Fluid control valves
GB1167703A (en) A Pilot-Operated Valve Having a Short Delay in Opening
GB609512A (en) Improvements in or relating to control valves for hydraulic transmission systems