CA2654078A1 - 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
- CA2654078A1 CA2654078A1 CA002654078A CA2654078A CA2654078A1 CA 2654078 A1 CA2654078 A1 CA 2654078A1 CA 002654078 A CA002654078 A CA 002654078A CA 2654078 A CA2654078 A CA 2654078A CA 2654078 A1 CA2654078 A1 CA 2654078A1
- Authority
- CA
- Canada
- Prior art keywords
- transmission
- gears
- drive gears
- driven
- recited
- 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
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- 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
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- 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)
- Transmission Devices (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.
Claims (21)
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, wherein said rotational motion corresponds 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;
a transmission output interface coupled at least indirectly to said one or more driven gears; and a synchronization mechanism configured and arranged to cause the transmission to maintain, during a gear ratio change, (i) constant tooth-to-tooth engagement between said one or more drive gears and said one or more driven gears, and (ii) constant power transmission between said transmission input interface and said transmission output interface.
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, wherein said rotational motion corresponds 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;
a transmission output interface coupled at least indirectly to said one or more driven gears; and a synchronization mechanism configured and arranged to cause the transmission to maintain, during a gear ratio change, (i) constant tooth-to-tooth engagement between said one or more drive gears and said one or more driven gears, and (ii) constant power transmission between said transmission input interface and said transmission output interface.
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 1 or 2, wherein said one or more driven gears, when engaged by said one or more drive gears, provide a plurality of discrete gear ratios that are based on 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 and wherein said one or more driven gears comprises a plurality of driven gears.
5. A transmission as recited in any of claims 1 to 3, wherein said at least one synchronization gear is linked to said rotatable input shaft, such that said at least one synchronization gear is arranged to at least indirectly be rotated by said rotating input shaft.
6. A transmission as recited in any of claims 1 to 3, 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 plane.
7. A transmission as recited in any of claims 1 to 3, further comprising:
at least one clutch mechanism linked to said one or more drive gears, wherein said clutch mechanism is configured to at least temporarily stop said rotational motion of at least some of said one or more drive gears when said one or more drive gears are undergoing a change to a different gear ratio.
at least one clutch mechanism linked to said one or more drive gears, wherein said clutch mechanism is configured to at least temporarily stop said rotational motion of at least some of said one or more drive gears when said one or more drive gears are undergoing a change to a different gear ratio.
8. A transmission as recited in any of claims 1 to 3, wherein said one or more drive gears and said one or more driven gears are configured and arranged to maintain an engaged neutral position in which said one or more drive gears are arranged to cause substantially no rotation of said one or more driven gears despite constant engagement with said one or more driven gears.
9. A transmission as recited in claim 1, wherein at least one of said one or more drive gears virtually changes size during a change between discrete gear ratios so as to maintain constant tooth-to-tooth engagement with at least one driven gear during said gear ratio change which changes between discrete gear ratios, and maintains such constant tooth-to-tooth engagement while said gear ratio is not based on a whole tooth integer.
10. A transmission as recited in claim 1, wherein said one or more drive gears arranged to receive a torque input from said transmission input interface and transmit said torque input to said one or more driven gears, and wherein said one or more driven gears are arranged to transmit a torque output to said transmission output interface.
11. A transmission as recited in claim 10, wherein said one or more drive gears are further configured to rotate responsive to receipt of said torque input from said transmission input interface, such that each of said first drive gears is arranged to have a rotational motion at least some of the time during operation of the transmission.
12. A transmission as recited in any of claims 1 to 3, 10 or 11, wherein said one or more drive gears are plurality of drive gears arranged to selectively engage at least one of said one or more driven gears during a gear ratio change.
13. A transmission as recited in any of claims 1 to 3, 10 or 11, wherein said gear ratio change occurs between gear ratios defined by whole tooth integers, and wherein said synchronization member maintains constant positive engagement during changes between gear ratios defined by whole tooth integers.
14. A drive system, comprising:
a power source;
a transmission as recited in any of claims 1 to 3, 10 or 11;
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 3, 10 or 11;
a power train coupled to a transmission output interface of said transmission; and a load coupled to said power train.
15. 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 define a plurality of gear ratios;
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 tooth-to-tooth constant engagement with said one or more driving members at each of said plurality of discrete gear ratios and to maintain constant engagement with at least one of said one or more driving members during changes between said plurality of discrete gear ratios; 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 define a plurality of gear ratios;
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 tooth-to-tooth constant engagement with said one or more driving members at each of said plurality of discrete gear ratios and to maintain constant engagement with at least one of said one or more driving members during changes between said plurality of discrete gear ratios; 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.
16. A transmission as recited in claim 15, wherein at least one of said one or more driven members is configured to maintain constant tooth-tooth engagement with said one or more driving members by selective engagement with said one or more driving members.
17. A transmission as recited in claim 15 or 16, wherein said plurality of gear ratios increment corresponding to a same whole tooth integer.
18. A transmission as recited in claim 15 or 16, 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 driving members.
19. A transmission, comprising:
a transmission input interface configured to receive an input torque from a power source;
a plurality of drive gears coupled to said transmission input interface, said plurality of drive gears being configured to operate to define a plurality of gear ratios;
a plurality of driven gears configured to engage said plurality of drive gears, said plurality of driven gears collectively defining one or more virtual gears configured to maintain engagement with at least one of said plurality of drive gears at a plurality of gear ratios between discrete gear ratios of whole tooth integers, wherein said virtual gear changes size, in effect, as said plurality of drive gears and said plurality of driven gears move relative to each other for engagement at said discrete 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;
a plurality of drive gears coupled to said transmission input interface, said plurality of drive gears being configured to operate to define a plurality of gear ratios;
a plurality of driven gears configured to engage said plurality of drive gears, said plurality of driven gears collectively defining one or more virtual gears configured to maintain engagement with at least one of said plurality of drive gears at a plurality of gear ratios between discrete gear ratios of whole tooth integers, wherein said virtual gear changes size, in effect, as said plurality of drive gears and said plurality of driven gears move relative to each other for engagement at said discrete 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.
20. A transmission as recited in claim 18, wherein said at least one of said plurality of drive gears is configured virtually change size as said virtual gear changes size.
21. A transmission as recited in claim 18 or 19, wherein each of said plurality of drive gears is configured to at least selectively rotate about a respective central axis as said input torque is received, and wherein engagement of said plurality of drive gears with said plurality of driven gears is configured to cause engaged of said plurality of driven gears to rotate about their respective centers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2736815A CA2736815C (en) | 2006-06-08 | 2007-06-07 | Positive displacement variable speed transmission with dual motion drive gears |
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US80427306P | 2006-06-08 | 2006-06-08 | |
| US60/804,273 | 2006-06-08 | ||
| US11/759,207 | 2007-06-06 | ||
| 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 |
| PCT/US2007/070595 WO2008105891A2 (en) | 2006-06-08 | 2007-06-07 | Positive displacement variable speed transmission with dual motion drive gears |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2736815A Division CA2736815C (en) | 2006-06-08 | 2007-06-07 | Positive displacement variable speed transmission with dual motion drive gears |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2654078A1 true CA2654078A1 (en) | 2008-09-04 |
| CA2654078C CA2654078C (en) | 2011-07-19 |
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 After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2736815A Expired - Fee Related CA2736815C (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 |
| ATE49796T1 (en) * | 1986-05-27 | 1990-02-15 | Hans Georg Braunschweiler | GEAR TRANSMISSION WITH CONTINUOUSLY VARIABLE RATIO. |
| 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 BR BRPI0712329-9A patent/BRPI0712329A2/en not_active IP Right Cessation
- 2007-06-07 KR KR1020097000333A patent/KR101099568B1/en not_active IP Right Cessation
- 2007-06-07 JP JP2009514529A patent/JP4932907B2/en not_active Expired - Fee Related
- 2007-06-07 CN CNA2007800251436A patent/CN101484726A/en active Pending
- 2007-06-07 CA CA2654078A patent/CA2654078C/en not_active Expired - Fee Related
- 2007-06-07 CA CA2736815A patent/CA2736815C/en not_active Expired - Fee Related
- 2007-06-07 WO PCT/US2007/070595 patent/WO2008105891A2/en active Application Filing
- 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 |
|---|---|
| JP4932907B2 (en) | 2012-05-16 |
| CN101484726A (en) | 2009-07-15 |
| KR20090020682A (en) | 2009-02-26 |
| JP2009540236A (en) | 2009-11-19 |
| EP2024662A2 (en) | 2009-02-18 |
| BRPI0712329A2 (en) | 2012-01-10 |
| CA2736815A1 (en) | 2008-09-04 |
| JP5694131B2 (en) | 2015-04-01 |
| CA2654078C (en) | 2011-07-19 |
| WO2008105891A3 (en) | 2008-11-13 |
| JP2012042061A (en) | 2012-03-01 |
| WO2008105891A2 (en) | 2008-09-04 |
| KR101099568B1 (en) | 2011-12-28 |
| CA2736815C (en) | 2012-03-27 |
| EP2024662A4 (en) | 2009-09-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20160607 |