GB827608A - Improvements in variable speed power transmission mechanisms - Google Patents
Improvements in variable speed power transmission mechanismsInfo
- Publication number
- GB827608A GB827608A GB11533/56A GB1153356A GB827608A GB 827608 A GB827608 A GB 827608A GB 11533/56 A GB11533/56 A GB 11533/56A GB 1153356 A GB1153356 A GB 1153356A GB 827608 A GB827608 A GB 827608A
- Authority
- GB
- United Kingdom
- Prior art keywords
- load
- rollers
- pin
- roller
- springs
- 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
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
- F16H61/66—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 specially adapted for continuously variable gearings
- F16H61/664—Friction gearings
- F16H61/6647—Friction gearings controlling shifting exclusively as a function of torque
-
- 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
- F16H15/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members
- F16H15/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members without members having orbital motion
- F16H15/04—Gearings providing a continuous range of gear ratios
- F16H15/06—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B
- F16H15/32—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line
- F16H15/36—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line with concave friction surface, e.g. a hollow toroid surface
- F16H15/38—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line with concave friction surface, e.g. a hollow toroid surface with two members B having hollow toroid surfaces opposite to each other, the member or members A being adjustably mounted between the surfaces
- F16H2015/383—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line with concave friction surface, e.g. a hollow toroid surface with two members B having hollow toroid surfaces opposite to each other, the member or members A being adjustably mounted between the surfaces with two or more sets of toroid gearings arranged in parallel
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
- Gear-Shifting Mechanisms (AREA)
- Friction Gearing (AREA)
Abstract
827,608. Variable-speed gear. KRAUS, C. E. April 16, 1956 [Jan. 6, 1956], No. 11533/56. Class 80 (2). A friction gear variable automatically with the load and having no other control, comprises pairs of input and output toric races 11, 12 and 16, 17, each tracked by three sets of rollers, each set consisting of three substantially coaxial rollers 23, 24, 25 which, for ratio shift, are precessed about a common fixed pivot-pin 26 lying on one side of all the rollers, by the load acting at the contact points of the rollers to turn them individually and independently about parallel axes formed by pins 38, 42, 45b, arranged in a common plane at right-angles to the shift axis 26, and each lying in a plane axially spaced from that of the contact-points of the corresponding roller, whereby drive torque produces the processional turning moment of the roller about its pin. Each pin 38 &c. connects a roller-supporting bearing-ring 39, 43, 46 to a bracket 36, 41, 45, individually pivoted on the pin 26. As shown in Fig. 2, anticlockwise movement of each roller 23 about its pin 38 in response to increase in load, is resisted by a helical compression spring 57 acting downwards on a rod 50, slidable in an offset bracket 52 and pressing on the bearing ring 39 of the corresponding roller 23. Load reduction permits the springs 57 to expand and cause clockwise pivoting of the rollers. The pivotal movement causes the rollers to precess in the appropriate direction about the common pivotal axis 26 to a new ratio position in which the springs 57 again balance the load. In Figs. 10-16, not shown, the load-responsive springs 57 are replaced by pairs of pistons acting oppositely on each roller support ring and backed by fluid or rubber trapped in a cylinder block. The input races 11, 12 are urged apart by a sprag 13 or by diaphragm springs, and the output shaft 21 carrying the output races 16, 17, may, for automotive use, drive the load 20 through a planetary reverse gear 22. Specification 763,514 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US827608XA | 1956-01-06 | 1956-01-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB827608A true GB827608A (en) | 1960-02-10 |
Family
ID=22173272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11533/56A Expired GB827608A (en) | 1956-01-06 | 1956-04-16 | Improvements in variable speed power transmission mechanisms |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB827608A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2827892A1 (en) * | 1977-06-29 | 1979-01-18 | Heinz Lampert | FRICTION WHEEL TORQUE CONVERTER WITH A PAIR OF FRICTION WHEELS AND THEIR USE |
| US4736642A (en) * | 1984-09-06 | 1988-04-12 | Delta Ag | Friction-wheel torque converter |
| WO2005019701A1 (en) * | 2003-08-20 | 2005-03-03 | Ulrich Rohs | Continuously variable gearing |
-
1956
- 1956-04-16 GB GB11533/56A patent/GB827608A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2827892A1 (en) * | 1977-06-29 | 1979-01-18 | Heinz Lampert | FRICTION WHEEL TORQUE CONVERTER WITH A PAIR OF FRICTION WHEELS AND THEIR USE |
| FR2396216A1 (en) * | 1977-06-29 | 1979-01-26 | Lampert Heinz | TORQUE CONVERTER WITH TWO FRICTION WHEELS, ESPECIALLY FOR VEHICLES |
| US4736642A (en) * | 1984-09-06 | 1988-04-12 | Delta Ag | Friction-wheel torque converter |
| WO2005019701A1 (en) * | 2003-08-20 | 2005-03-03 | Ulrich Rohs | Continuously variable gearing |
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