WO2001011272A1 - Gearboxes - Google Patents
Gearboxes Download PDFInfo
- Publication number
- WO2001011272A1 WO2001011272A1 PCT/GB2000/003019 GB0003019W WO0111272A1 WO 2001011272 A1 WO2001011272 A1 WO 2001011272A1 GB 0003019 W GB0003019 W GB 0003019W WO 0111272 A1 WO0111272 A1 WO 0111272A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shaft
- gearwheels
- gearwheel
- layshaft
- output shaft
- Prior art date
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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D41/00—Freewheels or freewheel clutches
- F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
- F16D41/064—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls
- F16D41/066—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls all members having the same size and only one of the two surfaces being cylindrical
- F16D41/067—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls all members having the same size and only one of the two surfaces being cylindrical and the members being distributed by a separate cage encircling the axis of rotation
-
- 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
- F16D21/04—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways with a shaft carrying a number of rotatable transmission members, e.g. gears, each of which can be connected to the shaft by a clutching member or members between the shaft and the hub of the transmission member
-
- 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
- F16D25/00—Fluid-actuated clutches
- F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
- F16D25/061—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having interengaging clutch members
-
- 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
- F16D25/00—Fluid-actuated clutches
- F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
- F16D25/062—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces
- F16D25/065—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutching members having a movement which has at least a radial component
-
- 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
- F16D41/00—Freewheels or freewheel clutches
- F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
- F16D41/08—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action
- F16D41/086—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action the intermediate members being of circular cross-section and wedging by rolling
- F16D41/088—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action the intermediate members being of circular cross-section and wedging by rolling the intermediate members being of only one size and wedging by a movement not having an axial component, between inner and outer races, one of which is cylindrical
-
- 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
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
- F16H3/091—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears including a single countershaft
- F16H3/0915—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears including a single countershaft with coaxial input and output shafts
-
- 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
- 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
- F16H2063/3093—Final output elements, i.e. the final elements to establish gear ratio, e.g. dog clutches or other means establishing coupling to shaft
Definitions
- the present invention relates to gearboxes, particularly though not exclusively to automotive gearboxes.
- Conventional gearboxes include an input or driving shaft, an output or driven shaft, which is coaxial with the input shaft, and a layshaft which is parallel to but spaced from the input and output shafts.
- the input shaft has a gear wheel rigidly connected to its end which is in mesh with a gear wheel rigidly connected to the layshaft.
- the output shaft and layshaft carry a number of pairs of meshing gear wheels, namely one pair for each gear.
- all the gear wheels on the layshaft are rigidly connected to it and are in permanent mesh with the other gear wheel of the pair on the output shaft.
- the gear wheels on the output shaft normally rotate freely with respect to it but may be selectively locked to rotate with it so that power is transmitted from the input shaft to the layshaft and then to the output shaft through the pair of meshing gear wheels of which one is locked to the output shaft.
- gearboxes Whilst automotive gearboxes commonly have four or five forward gear ratios, it is not uncommon for more gear ratios than this to be provided or desirable. However, the fact that a meshing pair of gearwheels, provided on the output shaft and layshaft, respectively, is required for each gear ratio means that such a gearbox is inherently very large. It would, therefore, be desirable for a gearbox to be able to provide a number of gear ratios which exceeds the number of pairs of meshing gears on the output shaft and layshaft but no satisfactory gearbox of this type has been proposed.
- the synchromesh system on conventional gearboxes includes a large number of components, namely hubs, sleeves, baulk rings, cones, forks, rods and the like and it would be desirable to reduce their number to reduce the cost and complexity of the gearbox.
- gearbox in which the number of gear ratios exceed the number of pairs of meshing gears on the output shaft and layshaft, thereby reducing the size of the gearbox. It is a further object to provide a gearbox which includes a reduced number of components and is thus cheaper and simpler than conventional gearboxes.
- a gearbox includes an input shaft, an output shaft substantially coaxial therewith and a layshaft parallel thereto but spaced therefrom, the input shaft carrying two or more gearwheels in mesh with respective gearwheels carried by the layshaft, the layshaft carrying further gearwheels which are in mesh with respective gearwheels carried by the output shaft, one of the gearwheels on the input shaft being rotationally coupled to a gearwheel on the output shaft to rotate therewith, the two rotationally coupled gearwheels on the input and output shafts and at least certain of the further gearwheels including a respective selectively operable rotary lock which is adapted to lock the gearwheel to the associated shaft so that it rotates therewith.
- the power may be transmitted directly from one of the gearwheels on the input shaft to the layshaft and thence to the output shaft or alternatively it may be transmitted either directly to the output shaft, whereby the input shaft and output shaft rotate at the same speed, by rotationally locking the coupled gearwheels on the input and output shafts to their respective shafts.
- the rotationally coupled gearwheel on the output shaft is unlocked and thus free to rotate with respect to it, the power is transmitted from the coupled gearwheel on the input shaft directly to the coupled gearwheels on the output shaft and thence to a gearwheel on the layshaft and subsequently back again to a further gearwheel on the output shaft.
- One of the gearwheels on the input shaft may be rotationally fixedly connected thereto but the others will of course include respective selectively operable rotary locks.
- Figure 1 is a highly diagrammatic side view of an automotive gearbox showing only the gearwheels and the shafts carrying them;
- Figure 2 is a longitudinal sectional view of the gearbox shown in Figure 1 ;
- Figure 3 is an exploded perspective view of one of the selectively lockable gearwheels and a portion of the shaft on which it is carried;
- Figure 4 is an axial sectional view of the gearwheel on the line Z-Z in Figure 5;
- Figure 5 is a radial sectional view of the gearwheel shown in Figure 3.
- Figure 6 is a sectional view showing the selective rotary lock.
- the gearbox includes a rotatable input shaft 2, coaxial with which is an output shaft 4.
- the output shaft 4 carries a stub shaft 6 of reduced diameter on its end which is freely rotatably received in a circular section recess in the opposed end of the input shaft.
- Parallel to the shafts 2, 4 and spaced from them is a layshaft 8.
- Fixedly attached to the input shaft 2 is a gearwheel A which is in permanent mesh with a gearwheel F which is carried by the layshaft 8 and is selectively lockable by a rotary lock which will be described below.
- the gearwheel F may thus selectively rotate with respect to the shaft 8 or be constrained to rotate with it.
- gearwheel B which is in permanent mesh with a gearwheel G which is carried by the layshaft and connected to it by a further rotary lock.
- the layshaft also carries three more gearwheels H, J and K, each of which is in permanent mesh with a respective gearwheel C, D and E carried by the output shaft. All of these gearwheels are connected to their respective shafts by further selective rotary locks with the exception of two of them, in this case the gearwheels D and E, which are rigidly connected to the output shaft.
- Gearwheel C on the output shaft is permanently connected to gearwheel B on the input shaft by a connection 10 so that these two gearwheels always rotate at the same speed.
- Each of the shafts 2, 4 and 8 is hollow and also defines a number of pressurised oil passages 12, which is at least equal to the number of selectively lockable gearwheels carried by it.
- These passages are connected to a common relatively low pressure oil pump, which may be mechanically coupled to be driven by an element of the gearbox or the associated engine or may be driven by a separate motor, e.g. an electric motor.
- a filter, valves and, if required, a cooler may also be provided.
- the oil pump may also supply lubricating oil to wherever it is required thus permitting the gearbox to operate with a "dry sump", thereby eliminating the conventional parasitic power loss.
- the planar surfaces 26 are associated in pairs which are inclined to one another at an oblique angle in the manner of a shallow V and together constitute a surface portion 27.
- a rolling body 28 Closely spaced, e.g. only by an oil film, from the central portion of each surface portion 27, i.e. aligned with the apex of the V, is a rolling body 28, in this case a roller, which is also in rolling contact with the opposed internal cylindrical surface of the gearwheel J.
- the rolling bodies 28 are all retained in an annular cage 30 which maintains their spacing constant.
- the cage 30 is normally retained in the position shown in Figure 6, in which rotation of the gearwheel J relative to the shaft 8 is permitted, by the provision of two substantially diametrically opposed holes 32 formed in it into which respective diametrically opposed latches, in this case chamfered cylindrical locking pins 34, project.
- the holes 32 are oval, with their major axes extending in the peripheral direction, and are in fact slightly offset in the peripheral direction so that one locking pin 34 engages one end of the associated hole 32 and the other locking pin engages the same end of the associated hole. There is thus a clearance between one side of each locking pin and the adjacent side of the hole.
- Each locking pin 34 is integral with a respective piston 36 which is accommodated in a respective cylinder 38 and is urged in the radially outward direction by a respective spring 40.
- the space on the radially outer side of the piston 38 communicates via a passage 42 with a respective pressurised oil passage 12 which communicates with a source of pressurised oil via a valve (not shown) which is controlled by e.g. the engine management system of the vehicle.
- each rolling body 28 moves a small distance along its associated surface portion 27. Since the spacing between the surface portions 27 and the opposed cylindrical surface of the gearwheel decreases progressively in each direction from the centre of the surface portions, the rolling bodies rapidly jam between these two surfaces.
- This jamming constitutes a rotary lock between the hub and the gearwheel and the two then rotate together as a solid body.
- the spaces in which the rolling bodies are accommodated is so dimensioned that the cage and rolling bodies can only move a distance in the circumferential direction which is less than the clearance referred to above.
- gearwheel A has 17 teeth
- B has 33 teeth
- D 36 teeth has 33 teeth
- E 44 teeth teeth
- F 54 teeth is 53 teeth
- G 40 teeth is 22 teeth
- gearwheel A rotates gearwheel F but this is not locked to the layshaft and the layshaft therefore does not rotate.
- the input shaft is also not locked to gearwheel B. The output shaft therefore does not rotate.
- gearwheels F, H and C In first gear, the rotary locks on gearwheels F, H and C are locked and the remainder released. Power therefore flows from the input shaft to the output shaft through gearwheels A, F, H and C.
- gearwheels F and K In second gear, the rotary locks on gearwheels F and K are locked and power therefore flows through gearwheels A, F, K and E.
- gearwheels F and J In third gear, the rotary locks on gearwheels F and J are locked and power flows through gearwheels A, F, J and D.
- gearwheels F, G and C In fourth gear, the rotary locks on gearwheels F, G and C are locked and power flows through gearwheels A, F, G and B and thence to the output shaft via gearwheel C by virtue of the fact that gearwheels B and C are rigidly connected together.
- gearwheels B, G and K In fifth gear, the rotary locks on gearwheels B, G and K are locked and power flows through gearwheels B, G, K and E.
- gearwheels B, G and J In sixth gear, the rotary locks on gearwheels B, G and J are locked and power flows through gearwheels B, G, J and D.
- gearwheels B, H and K In eighth gear, the rotary locks on gearwheels B, H and K are locked and power flows through gearwheels B and C, due to the fact that they are connected together, and thence through gearwheels H, K and E.
- gearwheel can continue to transmit drive torque but can freewheel in one direction and thus be overdriven by the higher ratio gearwheel.
- the gearwheel is then overdriven by the higher ratio gearwheel which permits the other locking pin to engage in its associated hole.
- the gearwheel is then unlocked from the associated shaft and drive torque is transmitted only through the new gearwheel. There is no need to remove or reduce engine power whilst the gear change process is taking place.
- both cylinders of the two locking pins associated with each gearwheel will normally be connected to the same oil passage and will thus be pressurised or relieved in synchronism, it may be desirable for the two locking pins of each gearwheel to be separately controllable. This would permit the driving characteristics of a vehicle incorporating the gearbox to be selectively temporarily altered, e.g. to permit freewheeling of one gearwheel in one direction for a brief period of time.
- the spaces in which the rolling bodies are accommodated have been described as tapering in thickness in the radial direction in both circumferential directions of the shaft. This will ensure that the gearwheels lock to the associated shaft in both directions.
- gearwheels illustrated in the drawings are spur gears, it will be appreciated that other types of gearwheel may be used, such as helical gearwheels.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00951703A EP1200756A1 (en) | 1999-08-06 | 2000-08-04 | Gearboxes |
AU64561/00A AU761870B2 (en) | 1999-08-06 | 2000-08-04 | Gearboxes |
PL00353159A PL353159A1 (en) | 1999-08-06 | 2000-08-04 | Gearboxes |
KR1020027001901A KR20020052176A (en) | 1999-08-06 | 2000-08-04 | Gearboxes |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9918642.1A GB9918642D0 (en) | 1999-08-06 | 1999-08-06 | Gearboxes |
GB9918642.1 | 1999-08-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001011272A1 true WO2001011272A1 (en) | 2001-02-15 |
Family
ID=10858766
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2000/003019 WO2001011272A1 (en) | 1999-08-06 | 2000-08-04 | Gearboxes |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1200756A1 (en) |
KR (1) | KR20020052176A (en) |
AU (1) | AU761870B2 (en) |
CZ (1) | CZ2002457A3 (en) |
GB (1) | GB9918642D0 (en) |
PL (1) | PL353159A1 (en) |
WO (1) | WO2001011272A1 (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003036128A1 (en) | 2001-10-26 | 2003-05-01 | Ricardo Mtc Limited | Automotive gearboxes |
EP1422450A3 (en) * | 2001-06-15 | 2005-03-16 | GHM Engineereing | Hydraulic, radially acting clutching members for stepped transmission |
EP1517071A2 (en) * | 2003-09-18 | 2005-03-23 | Franz Peter Ing. Jegel | Speed coupling |
EP1683981A1 (en) * | 2005-01-25 | 2006-07-26 | Peugeot Citroën Automobiles S.A. | Device for the temporary rotational connection of two parts and a mechanism with such a device |
GB2426302A (en) * | 2005-05-21 | 2006-11-22 | Xtrac Ltd | Gearbox |
WO2007074026A2 (en) * | 2005-12-23 | 2007-07-05 | Schaeffler Kg | Locking unit, especially for a superimposed steering system |
WO2008049891A1 (en) * | 2006-10-26 | 2008-05-02 | Schaeffler Kg | Bi-directional overrunning clutch with controlled locking mechanism |
GB2463706A (en) * | 2008-09-23 | 2010-03-24 | Xtrac Ltd | Gearbox with a mainshaft having an overrunning hub and spring biased pawls |
US8087845B2 (en) | 2008-05-22 | 2012-01-03 | GM Global Technology Operations LLC | Integrated locking assembly for reconfigurable end-effectors |
CN104728304A (en) * | 2013-12-20 | 2015-06-24 | 博格华纳公司 | Integrated actuator for multi-mode clutch module |
CN110206862A (en) * | 2019-04-25 | 2019-09-06 | 浙江派尼尔科技股份有限公司 | A kind of riding type lawn machine is with more gear distributions from walking gearbox |
DE102018218400A1 (en) * | 2018-10-26 | 2020-04-30 | Zf Friedrichshafen Ag | Shaft for a motor vehicle transmission |
ES2935142R1 (en) * | 2021-07-01 | 2023-03-03 | Pablo Alonso | PROGRAMMABLE FREEWHEEL |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101048358B1 (en) * | 2010-12-28 | 2011-07-14 | 오문근 | Mechanical automatic transmission |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0409803A1 (en) * | 1989-07-18 | 1991-01-23 | FIAT AUTO S.p.A. | A gearbox with meshed gears |
EP0508967A1 (en) * | 1991-04-12 | 1992-10-14 | MORBIDELLI S.p.A. | Gear shifting mechanism of the desmodromic type |
US5301565A (en) * | 1987-02-26 | 1994-04-12 | Weismann Peter H | Transmission |
DE4325964A1 (en) * | 1993-07-19 | 1995-01-26 | Imre Dr Techn Szodfridt | Hydraulically operated short-stroke synchronizer |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1219046A (en) * | 1958-03-31 | 1960-05-13 | Advanced mechanical shifting | |
GB1349936A (en) * | 1970-09-23 | 1974-04-10 | Brown Gear Ind | Change-speed gear-boxes |
US4271715A (en) * | 1978-07-04 | 1981-06-09 | Toyota Jidosha Kogyo Kabushiki Kaisha | Transmission equipped with auxiliary speed changing gear |
US4635495A (en) * | 1985-10-18 | 1987-01-13 | Twin Disc, Incorporated | Multi-speed reversible power transmission |
-
1999
- 1999-08-06 GB GBGB9918642.1A patent/GB9918642D0/en not_active Ceased
-
2000
- 2000-08-04 AU AU64561/00A patent/AU761870B2/en not_active Ceased
- 2000-08-04 CZ CZ2002457A patent/CZ2002457A3/en unknown
- 2000-08-04 PL PL00353159A patent/PL353159A1/en not_active IP Right Cessation
- 2000-08-04 EP EP00951703A patent/EP1200756A1/en not_active Withdrawn
- 2000-08-04 KR KR1020027001901A patent/KR20020052176A/en not_active Application Discontinuation
- 2000-08-04 WO PCT/GB2000/003019 patent/WO2001011272A1/en active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5301565A (en) * | 1987-02-26 | 1994-04-12 | Weismann Peter H | Transmission |
EP0409803A1 (en) * | 1989-07-18 | 1991-01-23 | FIAT AUTO S.p.A. | A gearbox with meshed gears |
EP0508967A1 (en) * | 1991-04-12 | 1992-10-14 | MORBIDELLI S.p.A. | Gear shifting mechanism of the desmodromic type |
DE4325964A1 (en) * | 1993-07-19 | 1995-01-26 | Imre Dr Techn Szodfridt | Hydraulically operated short-stroke synchronizer |
Non-Patent Citations (1)
Title |
---|
See also references of EP1200756A1 * |
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1422450A3 (en) * | 2001-06-15 | 2005-03-16 | GHM Engineereing | Hydraulic, radially acting clutching members for stepped transmission |
WO2003036128A1 (en) | 2001-10-26 | 2003-05-01 | Ricardo Mtc Limited | Automotive gearboxes |
EP1517071A2 (en) * | 2003-09-18 | 2005-03-23 | Franz Peter Ing. Jegel | Speed coupling |
EP1517071A3 (en) * | 2003-09-18 | 2006-03-15 | Franz Peter Ing. Jegel | Speed coupling |
EP1683981A1 (en) * | 2005-01-25 | 2006-07-26 | Peugeot Citroën Automobiles S.A. | Device for the temporary rotational connection of two parts and a mechanism with such a device |
FR2881198A1 (en) * | 2005-01-25 | 2006-07-28 | Peugeot Citroen Automobiles Sa | DEVICE FOR TEMPORARILY ESTABLISHING A CONNECTION IN ROTATION BETWEEN TWO PIECES, AND A MECHANISM WITH SUCH A DEVICE |
US7428854B2 (en) | 2005-05-21 | 2008-09-30 | Xtrac Limited | Gearbox |
GB2426302A (en) * | 2005-05-21 | 2006-11-22 | Xtrac Ltd | Gearbox |
EP1736678A2 (en) * | 2005-05-21 | 2006-12-27 | Xtrac Limited | Gearbox |
EP1736678A3 (en) * | 2005-05-21 | 2008-06-18 | Xtrac Limited | Gearbox |
WO2007074026A2 (en) * | 2005-12-23 | 2007-07-05 | Schaeffler Kg | Locking unit, especially for a superimposed steering system |
WO2007074026A3 (en) * | 2005-12-23 | 2007-08-23 | Schaeffler Kg | Locking unit, especially for a superimposed steering system |
WO2008049891A1 (en) * | 2006-10-26 | 2008-05-02 | Schaeffler Kg | Bi-directional overrunning clutch with controlled locking mechanism |
US8087845B2 (en) | 2008-05-22 | 2012-01-03 | GM Global Technology Operations LLC | Integrated locking assembly for reconfigurable end-effectors |
GB2463706A (en) * | 2008-09-23 | 2010-03-24 | Xtrac Ltd | Gearbox with a mainshaft having an overrunning hub and spring biased pawls |
US8424405B2 (en) | 2008-09-23 | 2013-04-23 | Xtrac Limited | Gearbox |
CN104728304A (en) * | 2013-12-20 | 2015-06-24 | 博格华纳公司 | Integrated actuator for multi-mode clutch module |
EP2896848A3 (en) * | 2013-12-20 | 2016-07-13 | BorgWarner Inc. | Integrated actuator for multi-mode clutch module |
US9897150B2 (en) | 2013-12-20 | 2018-02-20 | Borgwarner Inc. | Integrated actuator for multi-mode clutch module |
DE102018218400A1 (en) * | 2018-10-26 | 2020-04-30 | Zf Friedrichshafen Ag | Shaft for a motor vehicle transmission |
US11708888B2 (en) | 2018-10-26 | 2023-07-25 | Zf Friedrichshafen Ag | Shaft for a motor vehicle transmission |
CN110206862A (en) * | 2019-04-25 | 2019-09-06 | 浙江派尼尔科技股份有限公司 | A kind of riding type lawn machine is with more gear distributions from walking gearbox |
ES2935142R1 (en) * | 2021-07-01 | 2023-03-03 | Pablo Alonso | PROGRAMMABLE FREEWHEEL |
Also Published As
Publication number | Publication date |
---|---|
AU6456100A (en) | 2001-03-05 |
EP1200756A1 (en) | 2002-05-02 |
PL353159A1 (en) | 2003-10-20 |
KR20020052176A (en) | 2002-07-02 |
AU761870B2 (en) | 2003-06-12 |
CZ2002457A3 (en) | 2003-01-15 |
GB9918642D0 (en) | 1999-10-13 |
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