GB947948A - Improvements in and relating to planetary drive transmission devices - Google Patents

Improvements in and relating to planetary drive transmission devices

Info

Publication number
GB947948A
GB947948A GB4436461A GB4436461A GB947948A GB 947948 A GB947948 A GB 947948A GB 4436461 A GB4436461 A GB 4436461A GB 4436461 A GB4436461 A GB 4436461A GB 947948 A GB947948 A GB 947948A
Authority
GB
United Kingdom
Prior art keywords
piston
annulus
springs
valve
dec
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
GB4436461A
Inventor
Alan Salisbury Lamburn
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.)
Auto Transmissions Ltd
Original Assignee
Auto Transmissions 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 Auto Transmissions Ltd filed Critical Auto Transmissions Ltd
Priority to GB4436461A priority Critical patent/GB947948A/en
Publication of GB947948A publication Critical patent/GB947948A/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
    • 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
    • F16H61/02—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 characterised by the signals used
    • F16H61/0262—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 characterised by the signals used the signals being hydraulic
    • 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
    • F16H2716/00—Control devices for speed-change mechanisms of planetary gearings, with toothed wheels remaining engaged, e.g. also for devices to simplify the control or for synchronising devices combined with control devices
    • F16H2716/04—Control devices for speed-change mechanisms of planetary gearings, with toothed wheels remaining engaged, e.g. also for devices to simplify the control or for synchronising devices combined with control devices the control being hydraulic or pneumatic

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear-Shifting Mechanisms (AREA)

Abstract

947,948. Change-speed gearing. AUTO TRANSMISSIONS Ltd. Dec. 10, 1962 [Dec. 12, 1961], No. 44364/61. Heading F2D. A three-element epicyclic overdrive gear unit controlled by a clutch-brake member 24 operated by a fluid-pressure piston 31 has an auxiliary fluid-pressure piston 43 and an associated leakage orifice 42 for cushioning gear changing. The unit consists of a sun pinion 21 splined to member 24, planet pinion 18, carrier 17 and annulus 20, and as shown in the condition for direct drive member 24 is engaged with annulus 20 while piston 31 is cut off from a supply pump 37 by a control valve 36. For overdrive valve 36 is set to connect piston 31 with pump 37, the piston moving to the left to smoothly disengage member 24 from annulus 20 against loading springs 28, and then bearing against the fixed casing 34 to hold sun pinion 21. For direct drive valve 36 is turned to the position shown in which a pipe 40 connects the cylinders 38, 41 of pistons 31, 43. Under the action of springs 35, 38 piston 31 moves to the right and expels liquid from cylinder 38 to cylinder 41, from which it escapes through orifice 42, the piston 43 thus opposing springs 28 to give smooth engagement of member 24 with annulus 20.
GB4436461A 1961-12-12 1961-12-12 Improvements in and relating to planetary drive transmission devices Expired GB947948A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4436461A GB947948A (en) 1961-12-12 1961-12-12 Improvements in and relating to planetary drive transmission devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4436461A GB947948A (en) 1961-12-12 1961-12-12 Improvements in and relating to planetary drive transmission devices

Publications (1)

Publication Number Publication Date
GB947948A true GB947948A (en) 1964-01-29

Family

ID=10432938

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4436461A Expired GB947948A (en) 1961-12-12 1961-12-12 Improvements in and relating to planetary drive transmission devices

Country Status (1)

Country Link
GB (1) GB947948A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4403526A (en) * 1979-09-25 1983-09-13 Mobil Oil Corporation Manual transmission and hydraulically operated subtransmission

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4403526A (en) * 1979-09-25 1983-09-13 Mobil Oil Corporation Manual transmission and hydraulically operated subtransmission

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