GB1287259A - Improvements in or relating to remote gear shifting devices - Google Patents

Improvements in or relating to remote gear shifting devices

Info

Publication number
GB1287259A
GB1287259A GB3193871A GB3193871A GB1287259A GB 1287259 A GB1287259 A GB 1287259A GB 3193871 A GB3193871 A GB 3193871A GB 3193871 A GB3193871 A GB 3193871A GB 1287259 A GB1287259 A GB 1287259A
Authority
GB
United Kingdom
Prior art keywords
rod
piston
pistons
moved
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
GB3193871A
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.)
Tatra np
Original Assignee
Tatra np
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 Tatra np filed Critical Tatra np
Publication of GB1287259A publication Critical patent/GB1287259A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • F15B11/12—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action
    • F15B11/121—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action providing distinct intermediate positions
    • F15B11/123—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action providing distinct intermediate positions by means of actuators with fluid-operated stops
    • 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
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/3023—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by fluid pressure
    • 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
    • F16H61/26—Generation or transmission of movements for final actuating mechanisms
    • F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
    • F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
    • F16H2061/307—Actuators with three or more defined positions, e.g. three position servos

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Actuator (AREA)
  • Gear-Shifting Mechanisms (AREA)

Abstract

1287259 Change-speed control TATRA NARODNI PODNIK 7 July 1971 [10 July 1970] 31938/71 Heading F2D To provide a precisely set middle position intermediate between two extreme gear positions of a pneumatically-actuated change-speed shift-rod 5, on a motor-vehicle, thereby automatically establishing a neutral position of the gear, a three-stepped piston 4 on the rod 5 is actuated by a compound cylinder/piston assembly comprising an auxiliary piston 3 slidable in a fixed cylinder 1, which, on application of pressure to the appropriate end 13 or 14 of the outer cylinder 1 the auxiliary and stepped pistons 3, 4 are jointly moved to the appropriate opposite end of the outer cylinder, moving the shift-rod 5 to one or other of the two extreme gear positions, the grading sizes of the functional areas of the pistons 3, 4 being such that when pressure is simultaneously admitted through both inlets 13, 14 the auxiliary piston 3 is moved so that its skirt abuts one end of the fixed cylinder 1 (as shown) and the stepped piston 4 is moved so that its centre portion abuts the auxiliary piston 3 (as shown) to establish the middle, i.e. neutral, position of the gear shift-rod 5, a radial passage 16 venting the space between the pistons 3, 4 to atmosphere.
GB3193871A 1970-07-10 1971-07-07 Improvements in or relating to remote gear shifting devices Expired GB1287259A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS489270A CS151966B1 (en) 1970-07-10 1970-07-10

Publications (1)

Publication Number Publication Date
GB1287259A true GB1287259A (en) 1972-08-31

Family

ID=5392669

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3193871A Expired GB1287259A (en) 1970-07-10 1971-07-07 Improvements in or relating to remote gear shifting devices

Country Status (5)

Country Link
CH (1) CH527382A (en)
CS (1) CS151966B1 (en)
DE (1) DE2133893C3 (en)
FR (1) FR2100406A5 (en)
GB (1) GB1287259A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2336633A (en) * 1998-04-22 1999-10-27 Torotrak Dev Ltd Roller Control Unit for CVT
EP1873425A1 (en) * 2006-06-29 2008-01-02 FTE automotive GmbH Hydraulic adjustment device for operating a control rod, in particular of manual transmission for motor vehicles
WO2008063104A1 (en) * 2006-11-22 2008-05-29 Volvo Lastvagnar Ab Module system for manufacturing two and three stable positions fluid-operated actuators
GB2473054A (en) * 2009-08-28 2011-03-02 Gm Global Tech Operations Inc Synchronizer actuator having a piston that delimits three chambers
EP2290263A3 (en) * 2009-08-31 2011-04-13 ZF Friedrichshafen AG Method of synchronisation, actuator and switching device with actuator

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2501751A1 (en) * 1975-01-17 1976-07-22 Daimler Benz Ag COMPRESSED SERVO MOTOR IN PARTICULAR FOR POWER STEERING
HU187363B (en) * 1981-04-16 1985-12-28 Autoipari Kutato Intezet Pneumatic working cylinder woth four piston particularly for stage selector mechanism of motor vehicle
DE3118583A1 (en) * 1981-05-11 1983-02-10 Wabco Westinghouse Fahrzeugbremsen GmbH, 3000 Hannover THREE-POSITION GEAR CYLINDER
DE3336682A1 (en) * 1983-10-08 1985-04-25 Wabco Westinghouse Fahrzeugbremsen GmbH, 3000 Hannover WORK CYLINDER WITH THREE POSITIONS
US4773300A (en) * 1983-10-08 1988-09-27 Wabco Westinghouse Fahrzeugbremsen Gmbh Three-position working cylinder having dual concentric pistons
DE4038170A1 (en) * 1990-11-30 1992-06-04 Claas Ohg THREE-POSITION CYLINDER SYSTEM
DE19702656A1 (en) * 1997-01-25 1998-07-30 Hydraulik Ring Gmbh Actuating device for the automation of manual transmissions of vehicles, in particular of motor vehicles
EP4467848A1 (en) * 2023-05-26 2024-11-27 ZF CV Systems Europe BV Pneumatic valve, pneumatic system and vehicle, in particular utility vehicle

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2336633A (en) * 1998-04-22 1999-10-27 Torotrak Dev Ltd Roller Control Unit for CVT
US6273839B1 (en) 1998-04-22 2001-08-14 Torotrak (Development) Limited Roller control unit for a continuously-variable-ratio transmission
EP1873425A1 (en) * 2006-06-29 2008-01-02 FTE automotive GmbH Hydraulic adjustment device for operating a control rod, in particular of manual transmission for motor vehicles
US7644647B2 (en) 2006-06-29 2010-01-12 Fte Automotive Gmbh Hydraulic actuating device for actuating a shift rod in particular of a gearbox for motor vehicles
WO2008063104A1 (en) * 2006-11-22 2008-05-29 Volvo Lastvagnar Ab Module system for manufacturing two and three stable positions fluid-operated actuators
JP2010510466A (en) * 2006-11-22 2010-04-02 ボルボ ラストバグナー アーベー Modular system for manufacturing fluid operated actuators with two and three stable positions
US8312618B2 (en) 2006-11-22 2012-11-20 Volvo Lastvagnar Ab Module system for manufacturing two and three stable positions fluid-operated actuators
GB2473054A (en) * 2009-08-28 2011-03-02 Gm Global Tech Operations Inc Synchronizer actuator having a piston that delimits three chambers
US8434381B2 (en) 2009-08-28 2013-05-07 GM Global Technology Operations LLC Transmission for a motor vehicle
EP2290263A3 (en) * 2009-08-31 2011-04-13 ZF Friedrichshafen AG Method of synchronisation, actuator and switching device with actuator

Also Published As

Publication number Publication date
FR2100406A5 (en) 1972-03-17
CH527382A (en) 1972-08-31
DE2133893A1 (en) 1972-01-20
CS151966B1 (en) 1973-12-19
DE2133893B2 (en) 1973-11-15
DE2133893C3 (en) 1975-08-14

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee