IT1079008B - Valvola di comando - Google Patents

Valvola di comando

Info

Publication number
IT1079008B
IT1079008B IT49321/77A IT4932177A IT1079008B IT 1079008 B IT1079008 B IT 1079008B IT 49321/77 A IT49321/77 A IT 49321/77A IT 4932177 A IT4932177 A IT 4932177A IT 1079008 B IT1079008 B IT 1079008B
Authority
IT
Italy
Prior art keywords
control valve
valve
control
Prior art date
Application number
IT49321/77A
Other languages
English (en)
Original Assignee
Deere & Co
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 Deere & Co filed Critical Deere & Co
Application granted granted Critical
Publication of IT1079008B publication Critical patent/IT1079008B/it

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/12—Details not specific to one of the before-mentioned types
    • F16D25/14—Fluid pressure control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D2048/0209—Control by fluid pressure characterised by fluid valves having control pistons, e.g. spools
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D2048/0221—Valves for clutch control systems; Details thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D48/04—Control by fluid pressure providing power assistance
    • F16D2048/045—Vacuum boosters therefor
    • 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
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7758—Pilot or servo controlled
    • Y10T137/7762—Fluid pressure type
    • Y10T137/7764—Choked or throttled pressure type

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)
  • Fluid-Pressure Circuits (AREA)
IT49321/77A 1976-05-14 1977-05-09 Valvola di comando IT1079008B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/686,566 US4046162A (en) 1976-05-14 1976-05-14 Modulation control valve for clutches

Publications (1)

Publication Number Publication Date
IT1079008B true IT1079008B (it) 1985-05-08

Family

ID=24756838

Family Applications (1)

Application Number Title Priority Date Filing Date
IT49321/77A IT1079008B (it) 1976-05-14 1977-05-09 Valvola di comando

Country Status (7)

Country Link
US (1) US4046162A (it)
AR (1) AR214735A1 (it)
CA (1) CA1049883A (it)
DE (1) DE2720058C2 (it)
FR (1) FR2351334A1 (it)
GB (1) GB1536381A (it)
IT (1) IT1079008B (it)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4134313A (en) * 1976-05-11 1979-01-16 Aisin Seiki Kabushiki Kaisha Automatic transmission for automobiles
JPS5920901B2 (ja) * 1976-05-11 1984-05-16 アイシン精機株式会社 自動車用自動変速機の液圧制御回路
US4216851A (en) * 1976-06-07 1980-08-12 International Harvester Company Transmission clutches with fully-resetting modulator-load-piston
US4132302A (en) * 1976-06-07 1979-01-02 International Harvester Company Transmission clutches with fully-resetting modulator-load-piston
US4289221A (en) * 1978-11-17 1981-09-15 Eaton Corporation Hydraulic control system
WO1980002446A1 (en) * 1979-05-02 1980-11-13 Caterpillar Tractor Co Draw works transmission control
ATE25871T1 (de) * 1982-06-23 1987-03-15 Deere & Co Hydraulische reguliereinrichtung.
US4560044A (en) * 1982-06-29 1985-12-24 Kabushiki Kaisha Daikin Seisakusho Hydraulic pressure modulation device
US4644968A (en) * 1983-08-29 1987-02-24 J. I. Case Company Master clutch pressure and lubrication valve
US4711329A (en) * 1985-08-28 1987-12-08 Kubota, Ltd. Hydraulic circuit construction for power shift transmission
US4928557A (en) * 1987-12-04 1990-05-29 Toyota Jidosha Kabushiki Kaisha Hydraulic transmission controller with coupling pressure compensation
JPH085394Y2 (ja) * 1988-05-11 1996-02-14 株式会社小松製作所 クラッチ油圧制御装置
JPH03209056A (ja) * 1990-01-09 1991-09-12 Kubota Corp 作業車の走行変速構造
US5119914A (en) * 1991-10-15 1992-06-09 General Motors Corporation Accumulator and relay valve
DE19854453A1 (de) * 1998-11-25 2000-06-08 Liebherr Markus Anlaufsteuerung zum Ansteuern einer hydraulischen Kolben-Zylinder-Einheit
US6899211B2 (en) 2002-02-26 2005-05-31 Sonnax Industries, Inc. Pinless accumulator piston
US9885373B1 (en) 2016-10-11 2018-02-06 Honeywell International Inc. Leak-free piston style accumulator
US12577991B2 (en) 2024-06-17 2026-03-17 Caterpillar Inc. Pressure modulating clutch control assembly

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2721640A (en) * 1952-01-04 1955-10-25 Curtiss Wright Corp Device for controlling the rate of increase of a fluid pressure
BE543023A (it) * 1954-12-03 1900-01-01
US3583422A (en) * 1967-10-19 1971-06-08 Zahnradfabrik Friedrichshafen Valve construction for controlled pressure buildup in fluid-operated brake or clutch
JPS4940486B1 (it) * 1969-05-07 1974-11-02

Also Published As

Publication number Publication date
GB1536381A (en) 1978-12-20
US4046162A (en) 1977-09-06
DE2720058C2 (de) 1982-11-18
CA1049883A (en) 1979-03-06
DE2720058A1 (de) 1977-11-17
FR2351334B1 (it) 1982-04-09
AR214735A1 (es) 1979-07-31
FR2351334A1 (fr) 1977-12-09

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