US5226339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-speed transmission for use with electric powered vehicle
Assignee: New Venture Gear Inc
•
Filing: 1992-03-25
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Granted: 1993-07-13
•
Expires: 2012-03-25
Abstract
Abstract A manual two-speed automotive transmission adapted to being driven by an electric motor. The transmission includes an input shaft assembly driven by the motor via its armature, a flywheel and a clutch, an input gear assembly axially aligned with and separated from the input shaft assembly, and a transfer shaft assembly parallel to the input assemblies. A two-gear speed reducer rotatably mounted on the transfer shaft assembly connects a fixed gear of the input shaft assembly to a fixed gear of the input gear assembly. Additional gears are rotatably mounted on the transfer shaft assembly and secured to the input gear assembly, such that a synchronizer assembly on the transfer shaft cooperates with the various gears to drive the transfer shaft and a final output gear mounted thereon at a low or high speed. Reverse is accomplished by reversing the electric motor.
Inventors
- 👤 John M. Donato
- 👤 John C. McCoy
- 👤 Robert S. McKee
- 👤 Ralph D. Salle
- 👤 Richard A. Bakowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:39
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/02; F16H3/08; F16H3/087; F16H3/089; F16H3/091; F16H3/0915; F16H2003/0826; F16H2200/00; F16H2200/003; F16H2200/0034; F16H63/00; F16H63/40; F16H63/48; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19242; Y10T74/19377; Y10T74/19414; Y10T74/1947; Y10T74/19474; Y10T74/19479; Y10T74/19637
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
163 words
A transmission for use with a high speed electric power source, said transmission comprising an input shaft, clutch means for selectively operatively connecting said input shaft to said electric power source, an input gear secured to said input shaft, a second shaft aligned with and separated from said input shaft, at least one gear fixedly secured to said second shaft, a transfer shaft parallel to said input and second shaft, speed reducer means rotatably mounted on said transfer shaft and operatively interconnecting said input and second shafts, a first gear rotatably mounted on said transfer shaft and meshing with said at least one gear on said second shaft, a synchronizer assembly slidably secured to said transfer shaft and adapted to engage said first gear to rotate said transfer shaft at a first speed, and to cooperate with said speed reducer means to rotate said transfer shaft at a second speed, and a final drive gear secured to said transfer shaft for rotation therewith.
Claim 2
Dependent Claim
163 words
A transmission for use with a high speed electric power source, said transmission comprising an input shaft, clutch means for selectively operatively connecting said input shaft to said electric power source, an input gear secured to said input shaft, a second shaft aligned with and separated from said input shaft, at least one gear fixedly secured to said second shaft, a transfer shaft parallel to said input and second shaft, speed reducer means rotatably mounted on said transfer shaft and operatively interconnecting said input and second shafts, a first gear rotatably mounted on said transfer shaft and meshing with said at least one gear on said second shaft, a synchronizer assembly slidably secured to said transfer shaft and adapted to engage said first gear to rotate said transfer shaft at a first speed, and to cooperate with said speed reducer means to rotate said transfer shaft at a second speed, and a final drive gear secured to said transfer shaft for rotation therewith.
Claim 3
Dependent Claim
224 words
A transmission for use with an electric motor having an armature, a flywheel secured to the armature, and a clutch assembly operatively connected to the flywheel, said transmission comprising an input shaft aligned with an selectively secured to the armature by said clutch assembly, an input gear secured to said input shaft, a second shaft aligned with and separated from said input shaft, a first pair of spaced-apart gears fixedly secured to said second shaft, a transfer shaft parallel to said input and second shafts, a speed reducer rotatably mounted on said transfer shaft and including a second pair of spaced interconnected gears of different sizes serving as a second gear, one of which meshes with said input gear on said input shaft and the other of which meshes with one of said first pair of gears on said second shaft, a first gear rotatably mounted on said transfer shaft and meshing with the other of said pair of gears on said second shaft, a synchronizer assembly secured to said transfer shaft intermediate said second and first gears and adapted to being slidably moved on said transfer shaft to selectively secure one of the second and first gears to said transfer shaft to rotate same at predetermined second or first speeds, and a final drive gear secured to said transfer shaft for rotation therewith.
Claim 4
Dependent Claim
224 words
A transmission for use with an electric motor having an armature, a flywheel secured to the armature, and a clutch assembly operatively connected to the flywheel, said transmission comprising an input shaft aligned with an selectively secured to the armature by said clutch assembly, an input gear secured to said input shaft, a second shaft aligned with and separated from said input shaft, a first pair of spaced-apart gears fixedly secured to said second shaft, a transfer shaft parallel to said input and second shafts, a speed reducer rotatably mounted on said transfer shaft and including a second pair of spaced interconnected gears of different sizes serving as a second gear, one of which meshes with said input gear on said input shaft and the other of which meshes with one of said first pair of gears on said second shaft, a first gear rotatably mounted on said transfer shaft and meshing with the other of said pair of gears on said second shaft, a synchronizer assembly secured to said transfer shaft intermediate said second and first gears and adapted to being slidably moved on said transfer shaft to selectively secure one of the second and first gears to said transfer shaft to rotate same at predetermined second or first speeds, and a final drive gear secured to said transfer shaft for rotation therewith.
Claim 5
Dependent Claim
18 words
The transmission described in claim 2, and a differential drive gear in mesh with said final drive gear.
Claim 6
Dependent Claim
31 words
The transmission described in claim 2, wherein the gear ratio of the input gear and the one of said second pair of gears is on the order of 2.044 to 1.
Claim 7
Dependent Claim
36 words
The transmission described in claim 2, wherein the gear ratio of said other of said second pair of gears and said one of said first pair of gears is on the order of 1.030 to 1.
Claim 8
Dependent Claim
31 words
The transmission described in claim 2, wherein the gear ratio of the one of said first pair of gears and said first gear is on the order of 2.095 to 1.
Claim 9
Dependent Claim
27 words
The transmission described in claim 3, wherein the gear ratio of said final drive gear and said differential drive gear is on the order 3.846 to 1.
Claim 10
Dependent Claim
20 words
The transmission described in claim 2, and a parking lock gear fixedly secured to an end of said transfer shaft.
Claim 11
Dependent Claim
27 words
The transmission described in claim 3, wherein the overall high speed reduction thereof between input and output is a ratio on the order of 8.057 to 1.
Claim 12
Dependent Claim
28 words
The transmission described in claim 3, wherein the overall low speed reduction thereof between input and output is a ratio of on the order of 16.963 to 1.
Claim 13
Dependent Claim
18 words
The transmission described in claim 3, and a differential output assembly operatively connected to said differential drive gear.
Claim 14
Dependent Claim
17 words
The transmission described in claim 2, wherein reverse output thereof is accomplished by reversing said electric motor.
Claim 15
Dependent Claim
216 words
A transmission for use with an electric motor having an armature, a flywheel secured to the armature, and a clutch assembly operatively connected to the flywheel, said transmission comprising an input shaft aligned with and selectively secured to the armature by said clutch assembly, an input gear secured to said input shaft, a second shaft aligned with and separated from said input shaft, three spaced-apart gears fixedly secured to said second shaft, a transfer shaft parallel to said input and second shafts, a speed reducer rotatably mounted on said transfer shaft and including a pair of interconnected gears of different sizes, one of which meshes with said input gear and the other of which meshes with one of said three gears, a second gear rotatably mounted on said transfer shaft and meshing with another of said three gears, a first gear rotatably mounted on said transfer shaft and meshing with said third of said three gears, a synchronizer assembly secured to said transfer shaft intermediate said second and first gears and adapted to being slidably moved on said transfer shaft to selectively secure one of the second and first gears to said transfer shaft to rotate same at predetermined second or first speeds, and a final drive gear secured to said transfer shaft for rotation therewith.
Claim 16
Dependent Claim
216 words
A transmission for use with an electric motor having an armature, a flywheel secured to the armature, and a clutch assembly operatively connected to the flywheel, said transmission comprising an input shaft aligned with and selectively secured to the armature by said clutch assembly, an input gear secured to said input shaft, a second shaft aligned with and separated from said input shaft, three spaced-apart gears fixedly secured to said second shaft, a transfer shaft parallel to said input and second shafts, a speed reducer rotatably mounted on said transfer shaft and including a pair of interconnected gears of different sizes, one of which meshes with said input gear and the other of which meshes with one of said three gears, a second gear rotatably mounted on said transfer shaft and meshing with another of said three gears, a first gear rotatably mounted on said transfer shaft and meshing with said third of said three gears, a synchronizer assembly secured to said transfer shaft intermediate said second and first gears and adapted to being slidably moved on said transfer shaft to selectively secure one of the second and first gears to said transfer shaft to rotate same at predetermined second or first speeds, and a final drive gear secured to said transfer shaft for rotation therewith.
Claim 17
Dependent Claim
18 words
The transmission described in claim 13, and a differential drive gear in mesh with said final drive gear.
Claim 18
Dependent Claim
29 words
The transmission described in claim 13, wherein the gear ratio of the input gear and the one of said pair of gears is on the order 1.45 to 1.
Claim 19
Dependent Claim
31 words
The transmission described in claim 13, wherein the gear ratio of one of said pair of gears and one of said three gears is on the order of 1.45 to 1.
Claim 20
Dependent Claim
28 words
The transmission described in claim 13, wherein the gear ratio of one of said three gears and said second gear is on the order of 1.04 to 1.
Claim 21
Dependent Claim
27 words
The transmission described in claim 13, wherein the gear ratio of one of said three gears and said first gear is on the order 2.08 to 1.
Claim 22
Dependent Claim
28 words
The transmission described in claim 14, wherein the gear ratio of said final drive gear and said differential drive gear is on the order of 3.85 to 1.
Claim 23
Dependent Claim
20 words
The transmission described in claim 13, and a parking lock gear fixedly secured to an end of said transfer shaft.
Claim 24
Dependent Claim
27 words
The transmission described in claim 14, wherein the overall high speed reduction thereof between input and output is a ratio on the order of 8.42 to 1.
Claim 25
Dependent Claim
27 words
The transmission described in claim 14, wherein the overall low speed reduction thereof between input and output is a ratio on the order of 16.84 to 1.
Claim 26
Dependent Claim
18 words
The transmission described in claim 14, and a differential output assembly operatively connected to said differential drive gear.
Claim 27
Dependent Claim
17 words
The transmission described in claim 13, wherein reverse output thereof is accomplished by reversing said electric motor.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-07-12 | 1997-01-11 | 1997-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-12 | 2001-01-11 | 2001-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-12 | 2005-01-11 | 2005-07-13 | $7700.00 | Window Closed / Lapsed |