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GB2159228B - Attenuation valve for the clutch of the power take-off shaft of a tractor - Google Patents

Attenuation valve for the clutch of the power take-off shaft of a tractor

Info

Publication number
GB2159228B
GB2159228B GB08512789A GB8512789A GB2159228B GB 2159228 B GB2159228 B GB 2159228B GB 08512789 A GB08512789 A GB 08512789A GB 8512789 A GB8512789 A GB 8512789A GB 2159228 B GB2159228 B GB 2159228B
Authority
GB
United Kingdom
Prior art keywords
tractor
clutch
shaft
power take
attenuation 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
GB08512789A
Other versions
GB2159228A (en
GB8512789D0 (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 Technologies 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 GB8512789D0 publication Critical patent/GB8512789D0/en
Publication of GB2159228A publication Critical patent/GB2159228A/en
Application granted granted Critical
Publication of GB2159228B publication Critical patent/GB2159228B/en
Expired 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)
GB08512789A 1984-05-22 1985-05-21 Attenuation valve for the clutch of the power take-off shaft of a tractor Expired GB2159228B (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 (3)

Publication Number Publication Date
GB8512789D0 GB8512789D0 (en) 1985-06-26
GB2159228A GB2159228A (en) 1985-11-27
GB2159228B true GB2159228B (en) 1988-09-01

Family

ID=8519118

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08512789A Expired GB2159228B (en) 1984-05-22 1985-05-21 Attenuation valve for the clutch of the power take-off 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
CN105378298B (en) * 2013-07-24 2017-11-17 舍弗勒技术股份两合公司 Hydraulic system

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
ATE25871T1 (en) * 1982-06-23 1987-03-15 Deere & Co HYDRAULIC REGULATOR.

Also Published As

Publication number Publication date
SE8502395D0 (en) 1985-05-14
GB2159228A (en) 1985-11-27
FI842051A0 (en) 1984-05-22
FI842051A (en) 1985-11-23
DK159383C (en) 1991-03-18
DK225885A (en) 1985-11-23
SE8502395L (en) 1985-11-23
DK225885D0 (en) 1985-05-21
FI72931C (en) 1987-08-10
FR2564922B1 (en) 1990-09-14
SE458298B (en) 1989-03-13
NO852019L (en) 1985-11-25
NO159842B (en) 1988-11-07
DK159383B (en) 1990-10-08
BR8502401A (en) 1986-01-21
FI72931B (en) 1987-04-30
GB8512789D0 (en) 1985-06-26
FR2564922A1 (en) 1985-11-29
NO159842C (en) 1989-02-15

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 20050520