CA2003334A1 - Improvements in or relating to transmissions of the toroidal-race rolling-traction type - Google Patents

Improvements in or relating to transmissions of the toroidal-race rolling-traction type

Info

Publication number
CA2003334A1
CA2003334A1 CA2003334A CA2003334A CA2003334A1 CA 2003334 A1 CA2003334 A1 CA 2003334A1 CA 2003334 A CA2003334 A CA 2003334A CA 2003334 A CA2003334 A CA 2003334A CA 2003334 A1 CA2003334 A1 CA 2003334A1
Authority
CA
Canada
Prior art keywords
roller
contacts
carriage
toroidal
disc
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.)
Granted
Application number
CA2003334A
Other languages
French (fr)
Other versions
CA2003334C (en
Inventor
Christopher John Greenwood
Philip Duncan Winter
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.)
Torotrak Development Ltd
Original Assignee
Torotrak Development 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 Torotrak Development Ltd filed Critical Torotrak Development Ltd
Publication of CA2003334A1 publication Critical patent/CA2003334A1/en
Application granted granted Critical
Publication of CA2003334C publication Critical patent/CA2003334C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Friction Gearing (AREA)

Abstract

A roller control system for a continuously-variable-ratio transmission of the toroidal race, rolling traction type, in which rollers of variable orientation transmit traction between a part-toroidal race formed on an input disc and a similar race formed on a coaxial output disc. Each roller is mounted to rotate about a fixed centre and a fixed axis within a rigid carriage, one end of which contacts operating mechanism reciprocable over a predetermined stroke of operating movement and operable to apply a control force to the carriage. The assembly of roller and carriage is located by only three contacts with adjacent structure, namely the two disc/roller contacts and the contact with the operating mechanism. These three contacts suffice to cause the roller constantly to seek a ratio angle at which the instantaneous value of the control force is balanced by the instantaneous value of the traction forces to which the roller assembly is subjected due to the contact between the roller and the two discs, and at which the transmission is therefore in equilibrium.
CA 2003334 1988-11-21 1989-11-20 Improvements in or relating to transmissions of the toroidal-race rolling-traction type Expired - Fee Related CA2003334C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8827140.8 1988-11-21
GB888827140A GB8827140D0 (en) 1988-11-21 1988-11-21 Improvements in/relating to transmissions of toroidal-race rolling-traction type

Publications (2)

Publication Number Publication Date
CA2003334A1 true CA2003334A1 (en) 1990-05-21
CA2003334C CA2003334C (en) 1999-12-21

Family

ID=10647172

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2003334 Expired - Fee Related CA2003334C (en) 1988-11-21 1989-11-20 Improvements in or relating to transmissions of the toroidal-race rolling-traction type

Country Status (3)

Country Link
CA (1) CA2003334C (en)
DD (1) DD297864A5 (en)
GB (1) GB8827140D0 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4244512B2 (en) * 2000-09-14 2009-03-25 日本精工株式会社 Toroidal continuously variable transmission

Also Published As

Publication number Publication date
GB8827140D0 (en) 1988-12-29
CA2003334C (en) 1999-12-21
DD297864A5 (en) 1992-01-23

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Legal Events

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