IT1004305B - IMPROVEMENT IN HYDRAULIC CONTROL VALVES - Google Patents

IMPROVEMENT IN HYDRAULIC CONTROL VALVES

Info

Publication number
IT1004305B
IT1004305B IT48016/74A IT4801674A IT1004305B IT 1004305 B IT1004305 B IT 1004305B IT 48016/74 A IT48016/74 A IT 48016/74A IT 4801674 A IT4801674 A IT 4801674A IT 1004305 B IT1004305 B IT 1004305B
Authority
IT
Italy
Prior art keywords
improvement
hydraulic control
control valves
valves
hydraulic
Prior art date
Application number
IT48016/74A
Other languages
Italian (it)
Original Assignee
Fiat Allis Construct Machine
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 Construct Machine filed Critical Fiat Allis Construct Machine
Application granted granted Critical
Publication of IT1004305B publication Critical patent/IT1004305B/en

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)
IT48016/74A 1973-02-01 1974-01-29 IMPROVEMENT IN HYDRAULIC CONTROL VALVES IT1004305B (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
IT1004305B true IT1004305B (en) 1976-07-10

Family

ID=23282322

Family Applications (1)

Application Number Title Priority Date Filing Date
IT48016/74A IT1004305B (en) 1973-02-01 1974-01-29 IMPROVEMENT IN HYDRAULIC CONTROL VALVES

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
DE2403430A1 (en) 1974-08-08
FR2216495A1 (en) 1974-08-30
US3765454A (en) 1973-10-16
BR7400746D0 (en) 1974-10-29
SE403398B (en) 1978-08-14
CA991951A (en) 1976-06-29
JPS49106028A (en) 1974-10-08
ES422788A1 (en) 1976-05-01
FR2216495B1 (en) 1979-10-19

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