FR2564922B1 - ATTENUATION VALVE FOR THE CLUTCH OF THE PTO SHAFT OF A TRACTOR - Google Patents

ATTENUATION VALVE FOR THE CLUTCH OF THE PTO SHAFT OF A TRACTOR

Info

Publication number
FR2564922B1
FR2564922B1 FR858507685A FR8507685A FR2564922B1 FR 2564922 B1 FR2564922 B1 FR 2564922B1 FR 858507685 A FR858507685 A FR 858507685A FR 8507685 A FR8507685 A FR 8507685A FR 2564922 B1 FR2564922 B1 FR 2564922B1
Authority
FR
France
Prior art keywords
tractor
clutch
pto shaft
attenuation valve
attenuation
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
FR858507685A
Other languages
French (fr)
Other versions
FR2564922A1 (en
Inventor
Tapio Vainiomaki
Pekka Kalevi Mailas
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.)
Valmet Oy
Original Assignee
Valmet Oy
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 Valmet Oy filed Critical Valmet Oy
Publication of FR2564922A1 publication Critical patent/FR2564922A1/en
Application granted granted Critical
Publication of FR2564922B1 publication Critical patent/FR2564922B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F16D2048/0215—Control by fluid pressure for damping of pulsations within the fluid system
    • 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
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/22—Vibration damping

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Mechanical Operated Clutches (AREA)
FR858507685A 1984-05-22 1985-05-22 ATTENUATION VALVE FOR THE CLUTCH OF THE PTO SHAFT OF A TRACTOR Expired - Lifetime FR2564922B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI842051A FI72931C (en) 1984-05-22 1984-05-22 Damping valve for the clutch in a tractor's PTO shaft.

Publications (2)

Publication Number Publication Date
FR2564922A1 FR2564922A1 (en) 1985-11-29
FR2564922B1 true FR2564922B1 (en) 1990-09-14

Family

ID=8519118

Family Applications (1)

Application Number Title Priority Date Filing Date
FR858507685A Expired - Lifetime FR2564922B1 (en) 1984-05-22 1985-05-22 ATTENUATION VALVE FOR THE CLUTCH OF THE PTO SHAFT OF A TRACTOR

Country Status (7)

Country Link
BR (1) BR8502401A (en)
DK (1) DK159383C (en)
FI (1) FI72931C (en)
FR (1) FR2564922B1 (en)
GB (1) GB2159228B (en)
NO (1) NO159842C (en)
SE (1) SE458298B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2336641B (en) * 1998-04-25 2002-10-16 Agco Gmbh & Co Hydraulic system for a power-take-off clutch
DE112014003435B4 (en) * 2013-07-24 2020-06-18 Schaeffler Technologies AG & Co. KG Hydraulic system with a pressure relief valve

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE543023A (en) * 1954-12-03 1900-01-01
DE1284184B (en) * 1964-09-11 1968-11-28 Hengstler Hydraulik Control unit for the alternating loading of two hydraulically operated friction clutches
US3363649A (en) * 1965-12-27 1968-01-16 Allis Chalmers Mfg Co Fluid pressure control valve
US4083382A (en) * 1976-06-03 1978-04-11 J. I. Case Company Regulating valve with hydraulic detent
US4465168A (en) * 1981-11-25 1984-08-14 Kabushiki Kaisha Komatsu Seisakusho Pressure control system for a transmission
DE3275653D1 (en) * 1982-06-23 1987-04-16 Deere & Co Hydraulic actuator arrangement

Also Published As

Publication number Publication date
SE8502395D0 (en) 1985-05-14
NO852019L (en) 1985-11-25
NO159842C (en) 1989-02-15
FI842051A (en) 1985-11-23
DK159383B (en) 1990-10-08
BR8502401A (en) 1986-01-21
DK225885D0 (en) 1985-05-21
GB2159228A (en) 1985-11-27
NO159842B (en) 1988-11-07
DK225885A (en) 1985-11-23
GB8512789D0 (en) 1985-06-26
FI842051A0 (en) 1984-05-22
SE8502395L (en) 1985-11-23
DK159383C (en) 1991-03-18
FR2564922A1 (en) 1985-11-29
SE458298B (en) 1989-03-13
FI72931B (en) 1987-04-30
GB2159228B (en) 1988-09-01
FI72931C (en) 1987-08-10

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Legal Events

Date Code Title Description
TP Transmission of property
CA Change of address
CD Change of name or company name
CA Change of address
CD Change of name or company name
CA Change of address
CD Change of name or company name
TP Transmission of property