CA2736815A1 - Positive displacement variable speed transmission with dual motion drive gears - Google Patents
Positive displacement variable speed transmission with dual motion drive gears Download PDFInfo
- Publication number
- CA2736815A1 CA2736815A1 CA2736815A CA2736815A CA2736815A1 CA 2736815 A1 CA2736815 A1 CA 2736815A1 CA 2736815 A CA2736815 A CA 2736815A CA 2736815 A CA2736815 A CA 2736815A CA 2736815 A1 CA2736815 A1 CA 2736815A1
- Authority
- CA
- Canada
- Prior art keywords
- transmission
- members
- gears
- recited
- driven
- 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.)
- Granted
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
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/12—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types
- F16H37/16—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types with a driving or driven member which both rotates or oscillates on its axis and reciprocates
-
- 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
- F16H3/76—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with an orbital gear having teeth formed or arranged for obtaining multiple gear ratios, e.g. nearly infinitely variable
-
- 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
-
- 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
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/12—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
Abstract
The present invention relates to transmission systems and changing gear ratios within power transmission systems. In particular, the present invention relates to a positive displacement variable speed transmission. The transmission includes one or more drive gears which orbit, rotate, and which translate radially to change the size of the orbital path.
The change in the orbital path increases or decreases the linear velocity of the drive gears which engage one or more driven gears and transfer the changed linear velocity in the form of a gear ratio change.
The driven gears are also radially movable and movement of the driven gears is synchronized with the radial movement of the drive gears to maintain substantially constant engagement between gear ratios change. Thus, as the drive and driven gears can slide or step radially to any location within a range of positions, gear ratio changes can be made in very small increments.
The change in the orbital path increases or decreases the linear velocity of the drive gears which engage one or more driven gears and transfer the changed linear velocity in the form of a gear ratio change.
The driven gears are also radially movable and movement of the driven gears is synchronized with the radial movement of the drive gears to maintain substantially constant engagement between gear ratios change. Thus, as the drive and driven gears can slide or step radially to any location within a range of positions, gear ratio changes can be made in very small increments.
Claims (55)
1. A transmission, comprising:
a transmission input interface comprising a rotatable input shaft;
one or more drive gears coupled at least indirectly to said transmission input interface, each of said one or more drive gears being configured for rotational motion about a respective internal axis of the drive gear and for orbital motion about a common external axis, wherein said rotational motion and said orbital motion correspond to rotation of said rotatable input shaft;
one or more driven gears configured to engage said one or more drive gears, such that said one or more drive gears are adapted to cause rotation of said one or more driven gears; and a transmission output interface coupled at least indirectly to said one or more driven gears.
a transmission input interface comprising a rotatable input shaft;
one or more drive gears coupled at least indirectly to said transmission input interface, each of said one or more drive gears being configured for rotational motion about a respective internal axis of the drive gear and for orbital motion about a common external axis, wherein said rotational motion and said orbital motion correspond to rotation of said rotatable input shaft;
one or more driven gears configured to engage said one or more drive gears, such that said one or more drive gears are adapted to cause rotation of said one or more driven gears; and a transmission output interface coupled at least indirectly to said one or more driven gears.
2. A transmission as recited in claim 1, wherein said orbital path is selectively changeable such that a length of said orbital path can be selectively increased or decreased between a plurality of discrete orbital paths at which said one or more drive gears engage with said one or more driven gears.
3. A transmission as recited in claim 2, wherein said plurality of discrete orbital paths are each sized to have respective lengths that are whole tooth integers.
4. A transmission as recited in any of claims 1 to 3, wherein said one or more drive gears comprises a plurality of drive gears spaced around a circle at fixed angular intervals, and wherein said one or more driven gears comprises a plurality of driven gears spaced around a circle at fixed angular intervals.
5. A transmission as recited in any of claims 1 to 4, wherein said one or more drive gears comprise a plurality of drive gears and wherein said one or more driven gears comprise a plurality of driven gears, and wherein said one or more drive gears arranged to orbit along an orbital path that causes said plurality of drive gears to alternately engage said plurality of driven gears.
6. A transmission as recited in any of claims 1 to 5, wherein said one or more drive gears and said one or more driven gears are fixed in an axial direction.
7. A transmission as recited in any of claims 1 to 6, wherein said transmission input interface further comprises:
one or more synchronization gears linked to said rotatable input shaft, such that said one or more synchronization gears are arranged to rotate as said rotating input shaft rotates; and a reference gear engaged with said one or more synchronization gears, wherein said one or more synchronization gears are configured to orbit around said reference gear as an input torque is received by said transmission input interface, and wherein said one or more synchronization gears are configured to cause said rotational motion and said orbital motion of said one or more drive gears.
one or more synchronization gears linked to said rotatable input shaft, such that said one or more synchronization gears are arranged to rotate as said rotating input shaft rotates; and a reference gear engaged with said one or more synchronization gears, wherein said one or more synchronization gears are configured to orbit around said reference gear as an input torque is received by said transmission input interface, and wherein said one or more synchronization gears are configured to cause said rotational motion and said orbital motion of said one or more drive gears.
8. A transmission as recited in any of claims 1 to 7, wherein said one or more drive gears comprise one or more drive gears residing in a first plane and one or more drive gears residing in a second plane, said second plane being offset from said first plane, and wherein said one or more driven gears comprise one or more driven gears residing in said first plane and one or more driven gears residing in said second planes.
9. A transmission as recited in claim 8, wherein a plurality of drive gears residing in each of said first plane and said second plane are configured and arranged to orbit along a respective orbital path, said respective orbital paths of each of said plurality of drive gears residing in each of said first plane and said second plane being substantially equally sized and substantially coaxial.
10. A transmission as recited in claim 8 or 9, wherein said one or more drive gears residing in said first plane are configured and arranged to travel along an orbital path in a first direction, and wherein said one or more drive gears in said second plane are configured and arranged to travel along an orbital path in a second direction, said first direction being opposite said second direction.
11. A transmission as recited in any of claims 8 to 10, wherein said one or more drive gears and said one or more driven gears residing in said first plane, and said one or more drive gears and said one or more driven gears residing in said second are each configured to translate radially to change a gear ratio of the transmission.
12. A transmission as recited in any of claims 1 to 11, further comprising:
at least one clutch linked to said one or more drive gears, wherein said clutch is configured to at least temporarily stop said rotational motion of said one or more drive gears when said one or more drive gears are positioned between a first radial location and a second radial location, said second radial location corresponding to a different gear ratio than said first radial location.
at least one clutch linked to said one or more drive gears, wherein said clutch is configured to at least temporarily stop said rotational motion of said one or more drive gears when said one or more drive gears are positioned between a first radial location and a second radial location, said second radial location corresponding to a different gear ratio than said first radial location.
13. A transmission as recited in claim 12, wherein said clutch is further configured to at least temporarily stop said orbital motion of said one or more drive gears when said one or more drive gears are positioned between said first radial location and said second radial location.
14. A transmission as recited in any of claims 1 to 13, wherein said one or more drive gears are configured and arranged such that said rotational motion at least partially offsets said orbital motion.
15. A transmission as recited in claim 14, wherein said one or more drive gears are configured and arranged to maintain a neutral radial position in which said rotational motion is substantially equal and opposite to said orbital motion, such that at said neutral radial position, said one or more drive gears are arranged to cause substantially no rotation of said one or more driven gears.
16. A drive system, comprising:
a power source;
a transmission as recited in any of claims 1 to 20;
a power train coupled to a transmission output interface of said transmission; and a load coupled to said power train.
a power source;
a transmission as recited in any of claims 1 to 20;
a power train coupled to a transmission output interface of said transmission; and a load coupled to said power train.
17. A transmission, comprising:
a first transmission interface;
a first set of one or more power transmission members coupled at least indirectly to said first transmission interface, each of said one or more first power transmission members being configured to travel along a respective orbital path, a length of each orbital path of said first set of one or more power transmission members being selectively variable such that a unique gear ratio is defined for each orbital path length;
a second set of one or more power transmission members configured to engage said first set of one or more power transmission members; and a second transmission interface coupled to said second set of one or more power transmission members.
a first transmission interface;
a first set of one or more power transmission members coupled at least indirectly to said first transmission interface, each of said one or more first power transmission members being configured to travel along a respective orbital path, a length of each orbital path of said first set of one or more power transmission members being selectively variable such that a unique gear ratio is defined for each orbital path length;
a second set of one or more power transmission members configured to engage said first set of one or more power transmission members; and a second transmission interface coupled to said second set of one or more power transmission members.
18. A transmission as recited in claim 17, wherein said first set of one or more power transmission members is arranged to receive a torque input from said first transmission interface and transmit said torque input to said second set of one or more power transmission members, and wherein said second set of one or more power transmission members is arranged to transmit a torque output to said second transmission interface.
19. A transmission as recited in claim 18, wherein said first set of one or more power transmission members are further configured to rotate responsive to receipt of said torque input from said input interface, such that each of said first set of one or more power transmission members is arranged to have both an orbital motion and a rotational motion.
20. A transmission as recited in claim 17, wherein said second set of one or more power transmission members is arranged to receive an input torque from said second transmission interface and to transmit said input torque to said first set of one or more power transmission members.
21. A transmission as recited in any of claims 17 to 19, wherein said first set of one or more power transmission members comprises a first set of coaxial drive gears, and wherein said second set of one or more power transmission members comprises a first set of driven gears axially offset from each other, said first set of coaxial drive gears being substantially axially aligned with said set of axially offset driven gears.
22. A transmission as recited in claim 21, further comprising:
a second set of a coaxial drive gears, said second set of coaxial drive gears being substantially axially aligned with said set of axially offset driven gears.
a second set of a coaxial drive gears, said second set of coaxial drive gears being substantially axially aligned with said set of axially offset driven gears.
23. A transmission as recited in claim 22, wherein said first set of coaxial drive gears and said second set of coaxial drive gears are arranged to orbit along respective concentric orbital paths, and wherein said set of driven gears are arranged to rotate about respective offset axes of rotation, wherein said offset axes of rotation are angularly offset relative to an axis passing through a center of said concentric orbital paths of said first set of coaxial drive gears and said second set of coaxial drive gears.
24. A transmission as recited in any of claims 17 to 19 and 21 to 23, wherein said first set of one or more power transmission members comprises a plurality of substantially axially aligned drive gears arranged to orbit along a common orbital path, and wherein said second set of one or more power transmission members comprises a plurality of substantially axially aligned driven gears alternately engageable by each of said plurality of substantially axially aligned drive gears as said plurality of substantially axially aligned drive gears orbit along said common orbital path.
25. A transmission as recited in claim 24, wherein said common orbital path has a selectively changeable length, and wherein said plurality of drive gears and said plurality of driven gears are configured to engage each other at only a plurality of discrete lengths of said selectively changeable orbital path and to be selectively disengaged while said length of said common orbital path is not substantially equal to said discrete lengths.
26. A transmission as recited in claim 25, wherein each of said plurality of discrete lengths of said common orbital path is divisible into a whole tooth integer.
27. A transmission, comprising:
a transmission input interface configured to receive a rotational power input;
one or more driving members coupled to said transmission input interface, said one or more driving members being configured to selectively translate radially to any of a plurality of radial positions;
one or more driven members configured to engage said one or more driving members, said one or more driven members being configured to receive said power input from said driving members, and said one or more driven members being configured to maintain substantially constant engagement with said one or more driving members at each of said plurality of radial locations of said one or more driving members; and a transmission output interface coupled to said one or more driven members, said transmission output interface being configured to transmit a torque output corresponding to said torque input.
a transmission input interface configured to receive a rotational power input;
one or more driving members coupled to said transmission input interface, said one or more driving members being configured to selectively translate radially to any of a plurality of radial positions;
one or more driven members configured to engage said one or more driving members, said one or more driven members being configured to receive said power input from said driving members, and said one or more driven members being configured to maintain substantially constant engagement with said one or more driving members at each of said plurality of radial locations of said one or more driving members; and a transmission output interface coupled to said one or more driven members, said transmission output interface being configured to transmit a torque output corresponding to said torque input.
28. A transmission as recited in claim 27, wherein said one or more driven members are configured to maintain engagement with said one or more driving members by radial translation.
29. A transmission as recited in claim 27 or 28, further comprising:
means for synchronizing said one or more driving members and said one or more driven members such that engagement between said drive members and said driven members is substantially maintained at a plurality of discrete gear ratios, notwithstanding one or more changes in gear ratio.
means for synchronizing said one or more driving members and said one or more driven members such that engagement between said drive members and said driven members is substantially maintained at a plurality of discrete gear ratios, notwithstanding one or more changes in gear ratio.
30. A transmission as recited in claim 29, wherein said means for synchronizing said one or more driving members and said one or more driven members comprises:
a ratio reference member linked to said one or more driving members, said ratio reference member being configured to cause said one or more driving members to rotate in response to receipt of said rotational power input; and a reference gear engaged with said ratio reference gear.
a ratio reference member linked to said one or more driving members, said ratio reference member being configured to cause said one or more driving members to rotate in response to receipt of said rotational power input; and a reference gear engaged with said ratio reference gear.
31. A transmission as recited in claim 29, wherein said means for synchronizing said one or more driving members and said one or more driven members comprises:
a plurality of pivot members around which said one or more driving members and said one or more driven members are configured to roll; and one or more links connected to said one or more driving members and said one or more driven members, said one or more links being configured to cause said one or more driving members and said one or more driven members to roll around said plurality of pivot members.
a plurality of pivot members around which said one or more driving members and said one or more driven members are configured to roll; and one or more links connected to said one or more driving members and said one or more driven members, said one or more links being configured to cause said one or more driving members and said one or more driven members to roll around said plurality of pivot members.
32. A transmission as recited in any of claims 27 to 31, wherein said one or more driving members are configured to orbit around an axis which is offset from a respective center of each of said one or more driving members, and wherein a translation of said one or more driving members radially corresponds to a change of length of the orbital path of said one or more driving members.
33. A transmission as recited in claim 32, wherein a change in said length of said orbital path corresponds to a change in gear ratio, and wherein said length of said orbital path is changeable in discrete increments, each increment being a whole tooth integer.
34. A transmission as recited in any of claims 27 to 33, wherein said one or more driven members include one or more ring gears having an internal gear tooth profile mating with a gear tooth profile of said one or more radially translating driving members.
35. A transmission as recited in any of claims 27 to 33, wherein said one or more driven members include one or more sun gears having an external gear tooth profile mating with an external gear tooth profile of said one or more radially translating driving members.
36. A transmission, comprising:
a transmission input interface configured to receive a torque input;
a plurality of drive members coupled to said transmission interface, said plurality of drive members being configured to collectively define a plurality of gear ratios;
a plurality of driven members configured to engage said plurality of drive members, each of said plurality of driven members being configured to translate radially with respect to a central axis about which said plurality of drive members are arranged, each of said plurality of driven members being arranged to translate along a predetermined translation path from a first radial position relative to said central axis to at least a second radial position relative to said central axis, such that said the predetermined translation path for each of said plurality of driven members is angularly offset with respect to the predetermined translation path of at least one other driven member; and a transmission output interface configured to transmit a torque output, said transmission output interface being coupled to said plurality of driven members and configured to receive a torque therefrom.
a transmission input interface configured to receive a torque input;
a plurality of drive members coupled to said transmission interface, said plurality of drive members being configured to collectively define a plurality of gear ratios;
a plurality of driven members configured to engage said plurality of drive members, each of said plurality of driven members being configured to translate radially with respect to a central axis about which said plurality of drive members are arranged, each of said plurality of driven members being arranged to translate along a predetermined translation path from a first radial position relative to said central axis to at least a second radial position relative to said central axis, such that said the predetermined translation path for each of said plurality of driven members is angularly offset with respect to the predetermined translation path of at least one other driven member; and a transmission output interface configured to transmit a torque output, said transmission output interface being coupled to said plurality of driven members and configured to receive a torque therefrom.
37. A transmission as recited in claim 36, wherein said plurality of drive members are fixed to prevent substantial axial movement, and wherein said plurality of drive members are axially aligned with said plurality of driven members, and wherein said plurality of drive members are configured to translate radially to maintain engagement with said plurality of driven members.
38. A transmission as recited in claim 36 or 37, wherein said plurality of drive members are configured and arranged rotate about a respective central axis and to collectively travel along one or more orbital paths around a common axis, and wherein said plurality of driven members are arranged to rotate around respective central axes without orbiting around a common axis.
39. A transmission as recited in any of claim 36 to 38, wherein said plurality of drive members and said plurality of driven members have a Vernier relationship defining a frequency with which said plurality of drive members are collectively dead center engaged with said plurality of driven members.
40. A transmission as recited in claim 39, wherein said plurality of drive members and said plurality of driven members define an even-to-odd or an odd-to-even ratio.
41. A transmission as recited in claim 39 or 40, wherein a number of said plurality of drive members and a number of said plurality of driven members define a ratio, or reduce to a ratio, selected from a group consisting of: 2:3, 3:2, 3:4, 3:6, 4:3, 5:6, 5:8, 5:9, 6:3, 6:5, 6:7, 7:6, 8:5, 8:9, 9:5 and 9:8.
42. A transmission as recited in any of claim 36 to 41, wherein said plurality of drive members comprises a set of drive gears, each drive gear in said set of drive gears having about the same size and gear tooth profile, and wherein said plurality of driven gears comprises a set of driven gears, each driven gear in said set of driven gears having about the same size and gear tooth profile.
43. A transmission as recited in any of claim 36 to 42, wherein said plurality of drive members are configured to collectively travel along an orbital path around an external axis, the orbital path having a selectively variable length.
44. A transmission as recited in claim 43, wherein at a particular gear ratio, said plurality of drive members are configured and arranged to collectively maintain constant engagement with said plurality of driven members, while each of said plurality of drive members is configured to individually disengage and engage said plurality of driven members as said plurality of drive members travel along said orbital path.
45. A transmission as recited in any of claim 36 to 44, further comprising:
one or more linkages configured to maintain said plurality of driven members in rotations of equal angular velocity about their respective central axes.
one or more linkages configured to maintain said plurality of driven members in rotations of equal angular velocity about their respective central axes.
46. A transmission, comprising:
a transmission input interface configured to receive an input torque from a power source;
one or more drive gears coupled to said transmission input interface, said one or more drive gears being configured to translate radially;
a plurality of driven gears configured to engage said one or more drive gears, said plurality of driven gears collectively defining a virtual gear configured to maintain engagement with said one or more drive gears at a plurality of gear ratios, wherein said virtual gear is configured to change size as said one or more drive gears translate radially, wherein different sizes of said virtual gear define different respective gear ratios; and a transmission output interface coupled to said plurality of driven gears, said transmission output interface being configured to transmit an output torque, and said output torque being related to said input torque by a gear ratio related to said size of said virtual gear.
a transmission input interface configured to receive an input torque from a power source;
one or more drive gears coupled to said transmission input interface, said one or more drive gears being configured to translate radially;
a plurality of driven gears configured to engage said one or more drive gears, said plurality of driven gears collectively defining a virtual gear configured to maintain engagement with said one or more drive gears at a plurality of gear ratios, wherein said virtual gear is configured to change size as said one or more drive gears translate radially, wherein different sizes of said virtual gear define different respective gear ratios; and a transmission output interface coupled to said plurality of driven gears, said transmission output interface being configured to transmit an output torque, and said output torque being related to said input torque by a gear ratio related to said size of said virtual gear.
47. A transmission as recited in claim 46, wherein said one or more drive gears are configured to collectively travel along a selectively changeable orbital path around an external axis in response to receipt of said input torque, said orbital path being configured to change size as said virtual gear changes size.
48. A transmission as recited in claim 46, wherein a center of said virtual gear is fixed, and wherein said external axis passes through said center of said virtual gear.
49. A transmission as recited in any of claim 46 to 48, wherein said plurality of driven gears comprises a plurality of ring gears, said plurality of ring gears being spaced around a circle, and said virtual gear having a size generally corresponding to an interior perimeter of a common area shared by each of said plurality of ring gears.
50. A transmission as recited in any of claim 46 to 46, wherein said plurality of driven gears comprises a plurality of sun gears, said plurality of sun gears being spaced around a circle, and said virtual gear having a size generally corresponding to an outer perimeter of said plurality of sun gears.
51. A transmission as recited in any of claim 46 to 48, wherein said plurality of driven gears comprises a plurality of sun gears, said plurality of sun gears being spaced around a circle, and said virtual gear having a size generally corresponding to an inner perimeter of said plurality of sun gears.
52. A transmission as recited in any of claim 46 to 51, wherein each of said one or more drive gears are configured to rotate about a respective central axis as said input torque is received, and wherein engagement of said one or more drive gears with said one or more driven gears is configured to cause said one or more driven gears to rotate about their respective centers.
53. A transmission as recited in any of claim 46 to 52, wherein at each discrete gear ratio, said one or more drive gears collectively maintain constant engagement with said virtual gear.
54. A transmission as recited in claim 46, wherein said one or more drive gears collectively maintain constant engagement with said virtual gear at a plurality of discrete sizes of said virtual gear, each of said plurality of discrete sizes of said virtual gear being a whole tooth integer.
55. A transmission as recited in any of claim 46 to 54, wherein:
said one or more drive gears comprise a plurality of drive gears configured to rotate around their respective central axes and to collectively orbit along an orbital path centered around a common axis;
said plurality of driven gears are configured to rotate around their respective central axes and translate radially along respective predetermined translation paths, said predetermined translation paths being fixed at angular intervals around a common center; and and wherein said plurality of driving members are substantially constantly engaged with said plurality of driven members at each of a plurality of discrete radial locations, thereby remaining substantially constantly engaged at each of a plurality of discrete lengths of said orbital path.
said one or more drive gears comprise a plurality of drive gears configured to rotate around their respective central axes and to collectively orbit along an orbital path centered around a common axis;
said plurality of driven gears are configured to rotate around their respective central axes and translate radially along respective predetermined translation paths, said predetermined translation paths being fixed at angular intervals around a common center; and and wherein said plurality of driving members are substantially constantly engaged with said plurality of driven members at each of a plurality of discrete radial locations, thereby remaining substantially constantly engaged at each of a plurality of discrete lengths of said orbital path.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US80427306P | 2006-06-08 | 2006-06-08 | |
| US60/804,273 | 2006-06-08 | ||
| US11/759,206 | 2007-06-06 | ||
| US11/759,207 US7892129B2 (en) | 2006-06-08 | 2007-06-06 | Variable speed transmission with variable orbital path |
| US11/759,206 US8109852B2 (en) | 2006-06-08 | 2007-06-06 | Variable speed transmission with rotating and orbiting drive gears |
| US11/759,207 | 2007-06-06 | ||
| CA2654078A CA2654078C (en) | 2006-06-08 | 2007-06-07 | Positive displacement variable speed transmission with dual motion drive gears |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2654078A Division CA2654078C (en) | 2006-06-08 | 2007-06-07 | Positive displacement variable speed transmission with dual motion drive gears |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2736815A1 true CA2736815A1 (en) | 2008-09-04 |
| CA2736815C CA2736815C (en) | 2012-03-27 |
Family
ID=39721739
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2654078A Expired - Fee Related CA2654078C (en) | 2006-06-08 | 2007-06-07 | Positive displacement variable speed transmission with dual motion drive gears |
| CA2736815A Expired - Fee Related CA2736815C (en) | 2006-06-08 | 2007-06-07 | Positive displacement variable speed transmission with dual motion drive gears |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2654078A Expired - Fee Related CA2654078C (en) | 2006-06-08 | 2007-06-07 | Positive displacement variable speed transmission with dual motion drive gears |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP2024662A4 (en) |
| JP (2) | JP4932907B2 (en) |
| KR (1) | KR101099568B1 (en) |
| CN (1) | CN101484726A (en) |
| BR (1) | BRPI0712329A2 (en) |
| CA (2) | CA2654078C (en) |
| WO (1) | WO2008105891A2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7892129B2 (en) | 2006-06-08 | 2011-02-22 | Vmt Technologies Llc | Variable speed transmission with variable orbital path |
| US9188205B2 (en) | 2009-09-08 | 2015-11-17 | Gary D. Lee | Moon gear assembly |
| US8512182B2 (en) * | 2011-06-22 | 2013-08-20 | Kwok Keung TAM | Torque-driven automatic transmission device for bicycle |
| WO2021179134A1 (en) * | 2020-03-09 | 2021-09-16 | 华为技术有限公司 | Transmission device and control method therefor, and steering system and control method therefor |
| CN114439896B (en) * | 2020-11-06 | 2023-04-11 | 冯福荣 | Novel automobile stepless speed regulation transmission system |
| CN114559357A (en) * | 2022-03-26 | 2022-05-31 | 徐德富 | Single-driven revolution and rotation polishing and shape-modifying device |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2376429A (en) * | 1944-01-21 | 1945-05-22 | Geoffrey M Harry | Variable-speed power transmission |
| FR1248634A (en) * | 1959-10-20 | 1960-12-23 | Sealed bellows rotary joint or similar sealing member | |
| US4373926A (en) * | 1980-07-21 | 1983-02-15 | Fullerton Robert L | Automatic transmission having a continuously variable drive ratio |
| ES2013616B3 (en) * | 1986-05-27 | 1990-05-16 | Hans Georg Braunschweiler | TRANSMISSION OF GEARS WITH A VARIABLE DEMULTIPLICATION RATIO WITHOUT STAGES. |
| IT1232666B (en) * | 1988-12-20 | 1992-03-02 | Federici Leonida S | GEAR MECHANICAL CONTINUOUS SPEED VARIATOR |
| GB8901322D0 (en) * | 1989-01-21 | 1989-03-15 | Jaguar Cars | Transmission systems |
| US5352162A (en) * | 1992-11-16 | 1994-10-04 | Coronel Paul K | Dual concentric positively infinitely variable rotary motion transmission |
| JPH0989055A (en) * | 1995-09-25 | 1997-03-31 | Hirobumi Seki | Gear type continuously variable transmission, gear type continuously variable transmission for automobile and gear type continuously variable transmission for general industrial machine |
| US6024664A (en) * | 1998-04-22 | 2000-02-15 | Shaffner; Richard F. | Nonvariable or continuously variable friction drive |
| JP2002039289A (en) * | 2000-07-24 | 2002-02-06 | Hideo Sato | Continuously variable transmission |
| JP3689020B2 (en) * | 2000-10-30 | 2005-08-31 | 紀昭 豊島 | Swivel control gear type automatic continuously variable transmission |
-
2007
- 2007-06-07 CA CA2654078A patent/CA2654078C/en not_active Expired - Fee Related
- 2007-06-07 BR BRPI0712329-9A patent/BRPI0712329A2/en not_active IP Right Cessation
- 2007-06-07 JP JP2009514529A patent/JP4932907B2/en not_active Expired - Fee Related
- 2007-06-07 WO PCT/US2007/070595 patent/WO2008105891A2/en active Application Filing
- 2007-06-07 CA CA2736815A patent/CA2736815C/en not_active Expired - Fee Related
- 2007-06-07 CN CNA2007800251436A patent/CN101484726A/en active Pending
- 2007-06-07 KR KR1020097000333A patent/KR101099568B1/en not_active IP Right Cessation
- 2007-06-07 EP EP07873838A patent/EP2024662A4/en not_active Withdrawn
-
2011
- 2011-11-30 JP JP2011262213A patent/JP5694131B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP2024662A2 (en) | 2009-02-18 |
| JP5694131B2 (en) | 2015-04-01 |
| BRPI0712329A2 (en) | 2012-01-10 |
| WO2008105891A3 (en) | 2008-11-13 |
| JP4932907B2 (en) | 2012-05-16 |
| CA2654078A1 (en) | 2008-09-04 |
| CA2736815C (en) | 2012-03-27 |
| KR20090020682A (en) | 2009-02-26 |
| EP2024662A4 (en) | 2009-09-02 |
| CA2654078C (en) | 2011-07-19 |
| CN101484726A (en) | 2009-07-15 |
| WO2008105891A2 (en) | 2008-09-04 |
| JP2012042061A (en) | 2012-03-01 |
| KR101099568B1 (en) | 2011-12-28 |
| JP2009540236A (en) | 2009-11-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2736815A1 (en) | Positive displacement variable speed transmission with dual motion drive gears | |
| US4388838A (en) | Multiple countershaft simple transmission | |
| CN103917803A (en) | Electric vehicle driving device | |
| EP2271857B1 (en) | Gearbox with load distribution system | |
| JPS6334343A (en) | Differential planetary gear device | |
| JP6695859B2 (en) | Switching device for the first shift element and the second shift element, and a transmission having such a device | |
| CN114630977A (en) | Power split type stepless transmission device | |
| JP2009540236A5 (en) | ||
| US2884815A (en) | Rotary speed changer | |
| US6981928B2 (en) | Continuously variable transmission apparatus | |
| US10400860B2 (en) | Transmission arrangement | |
| US20100229665A1 (en) | Modified eccentric gearbox | |
| RU2705371C1 (en) | Double-flow transmission | |
| CN114103614A (en) | Two-gear speed change bridge driving system | |
| US20190360562A1 (en) | Gearless Speed Reducer | |
| KR20080053929A (en) | Gear mechanism, in particular linkage mechanism | |
| KR100982934B1 (en) | Transmission using two rotary power sources and gear combination | |
| RU2153612C2 (en) | Differential gearing | |
| RU2270389C2 (en) | Gearbox | |
| EP3597968B1 (en) | A gearbox assembly | |
| RU2398146C2 (en) | Procedure for stepless change of speed of mecanical gear and geared variator | |
| WO2020238816A1 (en) | Co-located differential reducer | |
| RU2017034C1 (en) | Gear box | |
| CN110319156A (en) | Three gear variable transmission mechanisms | |
| JPH04104423U (en) | Transmission gear device for co-rotating twin screw extruder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20160607 |