GB1134202A - Variable ratio transmission unit - Google Patents

Variable ratio transmission unit

Info

Publication number
GB1134202A
GB1134202A GB4449865A GB4449865A GB1134202A GB 1134202 A GB1134202 A GB 1134202A GB 4449865 A GB4449865 A GB 4449865A GB 4449865 A GB4449865 A GB 4449865A GB 1134202 A GB1134202 A GB 1134202A
Authority
GB
United Kingdom
Prior art keywords
carriers
axes
pistons
rollers
ratio
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
GB4449865A
Inventor
Thomas George Fellows
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB4449865A priority Critical patent/GB1134202A/en
Publication of GB1134202A publication Critical patent/GB1134202A/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
    • 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

Abstract

1,134,202. Variable-ratio friction gears. NATIONAL RESEARCH DEVELOPMENT CORP. 14 Oct., 1966 [20 Oct., 1965], No. 44498/65. Heading F2D. A variable-ratio frictional gear has driving and driven toric discs engaged by rollers 10 rotatably mounted in carriers 42 which pivot about axes 48 for ratio shift which is indicated by transverse movement of the carriers produced by fluid-pressure actuated pistons 38 on which the carriers are mounted by pivots 40, 41. The pistons 38 are slidably and rotatably mounted in fixed clyinders 34, 35, rotational movement of the pistons about their axes 47 shifting the rollers axially of the gear to accommodate relative axial movements of the toric discs produced by torque responsive loading means. Slight radial play of the rollers relative to their carriers 42 is provided to accommodate radial movement due to rotational movement about the axes 47.
GB4449865A 1965-10-20 1965-10-20 Variable ratio transmission unit Expired GB1134202A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4449865A GB1134202A (en) 1965-10-20 1965-10-20 Variable ratio transmission unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4449865A GB1134202A (en) 1965-10-20 1965-10-20 Variable ratio transmission unit

Publications (1)

Publication Number Publication Date
GB1134202A true GB1134202A (en) 1968-11-20

Family

ID=10433590

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4449865A Expired GB1134202A (en) 1965-10-20 1965-10-20 Variable ratio transmission unit

Country Status (1)

Country Link
GB (1) GB1134202A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0172276A1 (en) * 1983-01-03 1986-02-26 Excelermatic Inc. Hydraulically controlled infinitely variable traction roller transmission
WO1992001175A1 (en) * 1990-07-13 1992-01-23 Torotrak (Development) Limited Transmission of the toroidal-race rolling-traction type
WO1997001718A1 (en) * 1995-06-28 1997-01-16 Torotrak (Development) Limited Continuously-variable-ratio transmission of the toroidal-race rolling-traction type
GB2361510A (en) * 2000-04-19 2001-10-24 Torotrak Dev Ltd A continuously-variable-ratio, toroidal race rolling traction transmission

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0172276A1 (en) * 1983-01-03 1986-02-26 Excelermatic Inc. Hydraulically controlled infinitely variable traction roller transmission
WO1992001175A1 (en) * 1990-07-13 1992-01-23 Torotrak (Development) Limited Transmission of the toroidal-race rolling-traction type
GB2260583A (en) * 1990-07-13 1993-04-21 Torotrak Dev Ltd Transmission 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
GB2260583B (en) * 1990-07-13 1994-07-13 Torotrak Dev Ltd Transmission of the toroidal-race rolling-traction type
WO1997001718A1 (en) * 1995-06-28 1997-01-16 Torotrak (Development) Limited Continuously-variable-ratio transmission of the toroidal-race rolling-traction type
US6071209A (en) * 1995-06-28 2000-06-06 Torotrak (Development) Limited Continuously-variable-ratio transmission of the toroidal-race-rolling traction type
GB2361510A (en) * 2000-04-19 2001-10-24 Torotrak Dev Ltd A continuously-variable-ratio, toroidal race rolling traction transmission

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