GB971873A - Variable ratio power transmission apparatus - Google Patents

Variable ratio power transmission apparatus

Info

Publication number
GB971873A
GB971873A GB2761/61A GB276161A GB971873A GB 971873 A GB971873 A GB 971873A GB 2761/61 A GB2761/61 A GB 2761/61A GB 276161 A GB276161 A GB 276161A GB 971873 A GB971873 A GB 971873A
Authority
GB
United Kingdom
Prior art keywords
gear
brake
engaged
cage
sun
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
GB2761/61A
Inventor
Howard Frederick Hobbs
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.)
Hobbs Transmission Ltd
Original Assignee
Hobbs Transmission 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 Hobbs Transmission Ltd filed Critical Hobbs Transmission Ltd
Priority to GB2761/61A priority Critical patent/GB971873A/en
Priority to CH89562A priority patent/CH375578A/en
Publication of GB971873A publication Critical patent/GB971873A/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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H3/62—Gearings having three or more central gears
    • F16H3/66—Gearings having three or more central gears composed of a number of gear trains without drive passing from one train to another
    • F16H3/663—Gearings having three or more central gears composed of a number of gear trains without drive passing from one train to another with conveying rotary motion between axially spaced orbital gears, e.g. RAVIGNEAUX
    • 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
    • F16D21/00—Systems comprising a plurality of actuated clutches
    • F16D21/02—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways
    • F16D21/06—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways at least two driving shafts or two driven shafts being concentric

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structure Of Transmissions (AREA)

Abstract

971,873. Change-speed gear. HOBBS TRANSMISSION Ltd. Jan. 19, 1962 [Jan. 24, 1961], No. 2761/61. Heading F2D. A five forward and one reverse ratio planetary gear comprises a first input clutch A, engaged for all the forward ratios to drive a shaft 10 and a sun-gear 13, the latter meshing the planet pinion 24 of a three-gear planet cluster 22 . . . 24 rotating in a carrier 18. The larger pinion 27 of a two-gear cluster 27, 30 also meshes the planet pinion 24 while the smaller pinion 30 thereof meshes a sun-gear 31 fast with an output shaft 32. To establish the first ratio, with the input clutch A engaged, a brake 37 is engaged to station a ring gear 21 meshed by the planet pinion 22 of the three-gear cluster. The planet cage 18 then rotates slowly backwards. To establish the second ratio, the brake 37 is disengaged and a brake 36 is instead engaged, to hold the cage 18 stationary. To establish the third -ratio, the brake 36 is disengaged, thus freeing the cage 18, and a brake 35 is engaged to hold a sun-gear 16 meshing the planet pinion 22 of the three-gear cluster; the cage now rotates slowly forward. Fourth is established by disengaging the brake 35, and engaging a brake 34 to station a smaller sun-gear 14, so that the cage 18 rotates forwardly at an increased speed. Fifth (direct drive) is established by disengaging the brake 34, and engaging a second input clutch B, locking-up the gear. For reverse, the clutch A is disengaged, but the clutch B is engaged to drive the sun-gear 14, and the brake 37 is engaged to station the ring gear 21. As modifications, the three-gear planet cluster 22 . . . 24 may be provided with additional pinions meshing with sun gears and/or ring gears to provide more ratios. In another construction, Fig. 2 (not shown), the cage is carried by the output shaft, and the brakes 36, 37 are fast with ring gears meshing the pinions of the two-gear cluster 27, 30. Reference has been directed by the Comptroller to Specification 738,590.
GB2761/61A 1961-01-24 1961-01-24 Variable ratio power transmission apparatus Expired GB971873A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2761/61A GB971873A (en) 1961-01-24 1961-01-24 Variable ratio power transmission apparatus
CH89562A CH375578A (en) 1961-01-24 1962-01-24 Transmission Mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2761/61A GB971873A (en) 1961-01-24 1961-01-24 Variable ratio power transmission apparatus

Publications (1)

Publication Number Publication Date
GB971873A true GB971873A (en) 1964-10-07

Family

ID=9745404

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2761/61A Expired GB971873A (en) 1961-01-24 1961-01-24 Variable ratio power transmission apparatus

Country Status (2)

Country Link
CH (1) CH375578A (en)
GB (1) GB971873A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2275976A (en) * 1993-03-10 1994-09-14 Jong Oh Ra Continuous epicyclic automatic transmission
GB2295654A (en) * 1993-03-12 1996-06-05 Hae Sung Engineering Co Ltd Comtinuous epicyclic automatic transmission

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1209375A (en) * 1982-04-08 1986-08-12 John H. Kerr Incrementally variable transmission

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2275976A (en) * 1993-03-10 1994-09-14 Jong Oh Ra Continuous epicyclic automatic transmission
GB2275976B (en) * 1993-03-10 1997-10-29 Jong Oh Ra Continuous automatic transmission
GB2295654A (en) * 1993-03-12 1996-06-05 Hae Sung Engineering Co Ltd Comtinuous epicyclic automatic transmission

Also Published As

Publication number Publication date
CH375578A (en) 1964-02-29

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