US3765454A - Pressure graduated control valve - Google Patents

Pressure graduated control valve Download PDF

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Publication number
US3765454A
US3765454A US00328760A US3765454DA US3765454A US 3765454 A US3765454 A US 3765454A US 00328760 A US00328760 A US 00328760A US 3765454D A US3765454D A US 3765454DA US 3765454 A US3765454 A US 3765454A
Authority
US
United States
Prior art keywords
bore
spool
slot
communication
port
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 - Lifetime
Application number
US00328760A
Other languages
English (en)
Inventor
D Carl
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 Europe SpA
Allis Chalmers Corp
Original Assignee
Allis Chalmers Corp
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 Allis Chalmers Corp filed Critical Allis Chalmers Corp
Application granted granted Critical
Publication of US3765454A publication Critical patent/US3765454A/en
Assigned to FIATALLIS EUROPE S.P.A. reassignment FIATALLIS EUROPE S.P.A. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: FIATALLIS NORTH AMERICA, INC., A DE CORP
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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)
US00328760A 1973-02-01 1973-02-01 Pressure graduated control valve Expired - Lifetime US3765454A (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
US3765454A true US3765454A (en) 1973-10-16

Family

ID=23282322

Family Applications (1)

Application Number Title Priority Date Filing Date
US00328760A Expired - Lifetime US3765454A (en) 1973-02-01 1973-02-01 Pressure graduated control valve

Country Status (9)

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

Cited By (7)

* 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
US4188839A (en) * 1978-02-17 1980-02-19 Toyota Jidosha Kogyo Kabushiki Kaisha Throttling control valve and a system for controlling downshift timing of an automatic transmission for vehicles
WO1980001940A1 (fr) * 1979-03-05 1980-09-18 Mcwilliams O Soupape a tiroir equilibres
US4230152A (en) * 1978-01-16 1980-10-28 Fiat-Allis Construction Machinery, Inc. Multi-function control valve
US4559815A (en) * 1983-02-08 1985-12-24 Tectron (Eng) Ltd. Testing device for fuel injectors
US4676351A (en) * 1986-01-09 1987-06-30 Fiatallis Europe, S.P.A. Hydraulic operated control system to apply vehicle brakes
CN104047972A (zh) * 2014-06-19 2014-09-17 第一拖拉机股份有限公司 轮式拖拉机压力控制阀

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2604108A1 (de) * 1975-02-04 1976-08-05 Caterpillar Tractor Co Drosselschlitz fuer einen ventilkolben
HU180152B (en) * 1980-07-03 1983-02-28 Danuvia Koezponti Szeszam Es K Hidraulic apparatus for controlling energy flow

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2971536A (en) * 1958-06-26 1961-02-14 Caterpillar Tractor Co Hydraulic control valve throttling mechanism
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
US3176722A (en) * 1962-08-06 1965-04-06 Borg Warner Hydraulic valve device
US3370611A (en) * 1964-11-21 1968-02-27 Dowty Hydraulic Units Ltd Slide valves

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1120230B (de) * 1958-05-16 1961-12-21 Karl Marx Stadt Maschf Steuerschieber mit drehbarem Kolben zur Feinregulierung insbesondere der Bewegung von Arbeitskolben
US3148703A (en) * 1961-12-15 1964-09-15 Robertshaw Controls Co Rotary pneumatic pressure divider
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 (fr) * 1969-11-19 1971-04-30 Fujitsu Ltd Soupape pilote rotative

Patent Citations (5)

* 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
US2971536A (en) * 1958-06-26 1961-02-14 Caterpillar Tractor Co Hydraulic control valve throttling mechanism
US3176722A (en) * 1962-08-06 1965-04-06 Borg Warner Hydraulic valve device
US3370611A (en) * 1964-11-21 1968-02-27 Dowty Hydraulic Units Ltd Slide valves

Cited By (7)

* 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
US4230152A (en) * 1978-01-16 1980-10-28 Fiat-Allis Construction Machinery, Inc. Multi-function control valve
US4188839A (en) * 1978-02-17 1980-02-19 Toyota Jidosha Kogyo Kabushiki Kaisha Throttling control valve and a system for controlling downshift timing of an automatic transmission for vehicles
WO1980001940A1 (fr) * 1979-03-05 1980-09-18 Mcwilliams O Soupape a tiroir equilibres
US4559815A (en) * 1983-02-08 1985-12-24 Tectron (Eng) Ltd. Testing device for fuel injectors
US4676351A (en) * 1986-01-09 1987-06-30 Fiatallis Europe, S.P.A. Hydraulic operated control system to apply vehicle brakes
CN104047972A (zh) * 2014-06-19 2014-09-17 第一拖拉机股份有限公司 轮式拖拉机压力控制阀

Also Published As

Publication number Publication date
DE2403430A1 (de) 1974-08-08
SE403398B (sv) 1978-08-14
CA991951A (en) 1976-06-29
IT1004305B (it) 1976-07-10
JPS49106028A (fr) 1974-10-08
FR2216495A1 (fr) 1974-08-30
ES422788A1 (es) 1976-05-01
BR7400746D0 (pt) 1974-10-29
FR2216495B1 (fr) 1979-10-19

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Legal Events

Date Code Title Description
AS Assignment

Owner name: FIATALLIS EUROPE S.P.A., ZONA INDUSTRIALE SURBO, I

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:FIATALLIS NORTH AMERICA, INC., A DE CORP;REEL/FRAME:004389/0443

Effective date: 19850228