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GB1395319A - Variable-ratio frictional drives - Google Patents

Variable-ratio frictional drives

Info

Publication number
GB1395319A
GB1395319A GB3531771A GB3531771A GB1395319A GB 1395319 A GB1395319 A GB 1395319A GB 3531771 A GB3531771 A GB 3531771A GB 3531771 A GB3531771 A GB 3531771A GB 1395319 A GB1395319 A GB 1395319A
Authority
GB
United Kingdom
Prior art keywords
pressure
pistons
fluid pressure
piston
shift
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
GB3531771A
Other languages
English (en)
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.)
ZF International UK Ltd
Original Assignee
Lucas Industries Ltd
Joseph Lucas Industries Ltd
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 Lucas Industries Ltd, Joseph Lucas Industries Ltd filed Critical Lucas Industries Ltd
Priority to GB3531771A priority Critical patent/GB1395319A/en
Priority to DE19722236589 priority patent/DE2236589C3/de
Priority to FR7227150A priority patent/FR2147719A5/fr
Publication of GB1395319A publication Critical patent/GB1395319A/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
    • F16H—GEARING
    • F16H15/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members
    • F16H15/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members without members having orbital motion
    • F16H15/04—Gearings providing a continuous range of gear ratios
    • F16H15/06—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B
    • F16H15/32—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line
    • F16H15/36—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line with concave friction surface, e.g. a hollow toroid surface
    • F16H15/38—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line with concave friction surface, e.g. a hollow toroid surface with two members B having hollow toroid surfaces opposite to each other, the member or members A being adjustably mounted between the surfaces
    • 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
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/66—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings
    • F16H61/664—Friction gearings
    • 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
    • F16H—GEARING
    • F16H15/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members
    • F16H15/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members without members having orbital motion
    • F16H15/04—Gearings providing a continuous range of gear ratios
    • F16H15/06—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B
    • F16H15/32—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line
    • F16H15/36—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line with concave friction surface, e.g. a hollow toroid surface
    • F16H15/38—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line with concave friction surface, e.g. a hollow toroid surface with two members B having hollow toroid surfaces opposite to each other, the member or members A being adjustably mounted between the surfaces
    • F16H2015/383—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line with concave friction surface, e.g. a hollow toroid surface with two members B having hollow toroid surfaces opposite to each other, the member or members A being adjustably mounted between the surfaces with two or more sets of toroid gearings arranged in parallel

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Friction Gearing (AREA)
  • Hydraulic Motors (AREA)
GB3531771A 1971-07-27 1971-07-27 Variable-ratio frictional drives Expired GB1395319A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB3531771A GB1395319A (en) 1971-07-27 1971-07-27 Variable-ratio frictional drives
DE19722236589 DE2236589C3 (de) 1971-07-27 1972-07-26 Stufenlos einstellbares Reibungsgetriebe
FR7227150A FR2147719A5 (de) 1971-07-27 1972-07-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3531771A GB1395319A (en) 1971-07-27 1971-07-27 Variable-ratio frictional drives

Publications (1)

Publication Number Publication Date
GB1395319A true GB1395319A (en) 1975-05-21

Family

ID=10376346

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3531771A Expired GB1395319A (en) 1971-07-27 1971-07-27 Variable-ratio frictional drives

Country Status (3)

Country Link
DE (1) DE2236589C3 (de)
FR (1) FR2147719A5 (de)
GB (1) GB1395319A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4186616A (en) * 1976-08-14 1980-02-05 Lucas Industries Limited Variable speed transmission systems
US4281559A (en) * 1976-08-14 1981-08-04 Lucas Industries Limited Variable speed transmission systems
FR2541407A1 (fr) * 1983-02-21 1984-08-24 Nippon Seiko Kk Dispositif de transmission a variation continue perfectionne
WO1990005860A1 (en) * 1988-11-21 1990-05-31 Torotrak (Development) Limited Improvements in or relating to transmissions of the toroidal-race rolling-traction type
US5316526A (en) * 1990-07-13 1994-05-31 Torotrak (Development) Limited Transmission of the toroidal-race rolling-traction type
US6689013B1 (en) 1999-12-21 2004-02-10 Zf Friedrichshafen Ag Continuously variable friction gear transmission
US7125361B2 (en) 2000-12-13 2006-10-24 Toyota Jidosha Kabushiki Kaisha Toroidal type continuously variable transmission
CN100351551C (zh) * 2002-01-24 2007-11-28 托罗特拉克(开发)有限公司 滚动牵引连续可调传输单元的流体供应装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1600971A (en) * 1976-07-31 1981-10-21 Lucas Industries Ltd Variable speed transmission systems
US4726244A (en) * 1986-04-08 1988-02-23 Pencier Robert D De Reversible continuously variable transmission

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB392586A (en) * 1931-08-19 1933-05-19 Frank Anderson Hayes Improvements in or relating to variable speed power transmission mechanism

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4186616A (en) * 1976-08-14 1980-02-05 Lucas Industries Limited Variable speed transmission systems
US4281559A (en) * 1976-08-14 1981-08-04 Lucas Industries Limited Variable speed transmission systems
FR2541407A1 (fr) * 1983-02-21 1984-08-24 Nippon Seiko Kk Dispositif de transmission a variation continue perfectionne
WO1990005860A1 (en) * 1988-11-21 1990-05-31 Torotrak (Development) Limited Improvements in or relating to transmissions of the toroidal-race rolling-traction type
US5395292A (en) * 1988-11-21 1995-03-07 Torotrak (Development) Limited Transmissions of the toroidal-race rolling-traction type
JP2646040B2 (ja) 1988-11-21 1997-08-25 トロトラック・（ディベロップメント）・リミテッド Ｃｖｔ用ローラ制御装置
US5316526A (en) * 1990-07-13 1994-05-31 Torotrak (Development) Limited Transmission of the toroidal-race rolling-traction type
US6689013B1 (en) 1999-12-21 2004-02-10 Zf Friedrichshafen Ag Continuously variable friction gear transmission
US7125361B2 (en) 2000-12-13 2006-10-24 Toyota Jidosha Kabushiki Kaisha Toroidal type continuously variable transmission
CN100351551C (zh) * 2002-01-24 2007-11-28 托罗特拉克(开发)有限公司 滚动牵引连续可调传输单元的流体供应装置

Also Published As

Publication number Publication date
DE2236589A1 (de) 1973-02-08
DE2236589C3 (de) 1981-04-30
DE2236589B2 (de) 1980-09-18
FR2147719A5 (de) 1973-03-09

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee