US5427196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric motor drive system
Assignee: Equos Research Co Ltd
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Filing: 1993-07-06
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Granted: 1995-06-27
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Expires: 2013-07-06
Abstract
Abstract A structure for regulating the rotational direction of the output shaft of a hybrid vehicle is disclosed. The structure comprises a torque generating means for driving a drive wheel; a gear assembly unit including a first to a third element, the first element being adapted to receive a rotation from the torque generating means and the second element being adapted to transmit the rotation to an output shaft connected to the drive wheel; a case to house the gear assembly unit therein; and a rotation regulation means including a first coupler and a one-way clutch, the coupler and the one-way clutch being connected to the third element of the gear assembly unit, either of the coupler and the one-way clutch being disposed between the third element and the case, the other being disposed between the third element and a different one of the elements, so that the output shaft is only allowed to rotate in one direction when the coupler is coupled.
Inventors
- 👤 Kozo Yamaguchi
- 👤 Yoshinori Miyaishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:20
CPC Classifications
B; B60; B60K; B60K1/00; B60K6/00; B60K6/20; B60K6/22; B60K6/36; B60K6/365; B60K6/38; B60K6/383; B60K6/40; B60K6/405; B60K6/42; B60K6/48; B60K6/50; B60K6/54; B60K6/547; B60L; B60L15/00; B60L15/20; B60L15/2072; B60L15/2081; B60L3/00; B60L3/0023; B60L3/0046; B60L50/00; B60L50/10; B60L50/16; B60L50/50; B60L50/60; B60L50/61; B60W; B60W10/00; B60W10/04; B60W10/08; B60W10/10; B60W20/00; B60W20/40; B60L2240/00; B60L2240/10; B60L2240/12; B60L2240/36; B60L2240/40; B60L2240/42; B60L2240/421; B60L2240/423; B60L2240/44; B60L2240/441; B60L2240/443; B60L2260/00; B60L2260/20; B60L2260/22; B60W30/00; B60W30/18; B60W30/18009; B60W30/18109; B60W30/18118; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/62; Y02T10/64; Y02T10/70; Y02T10/7072; Y02T10/72; Y10; Y10S; Y10S903/00; Y10S903/902; Y10S903/903; Y10S903/904; Y10S903/909; Y10S903/91; Y10S903/912; Y10S903/913; Y10S903/915; Y10S903/917; Y10S903/919; Y10S903/945
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
148 words
An electric motor drive system, comprising: a torque generating means for driving a drive wheel; a gear assembly unit including a first to a third element, the first element being adapted to receive a rotation from said torque generating means and the second element being adapted to transmit the rotation to an output shaft connected to the drive wheel; a case to house said gear assembly unit therein; and a rotation regulation means including a first coupler and a one-way clutch, the coupler and the one-way clutch being connected to the third element of said gear assembly unit, either of the coupler and the one-way clutch being disposed between the third element and said case, the other being disposed between the third element and a different one of the elements, so that the output shaft is only allowed to rotate in one direction when said coupler is coupled.
Claim 2
Dependent Claim
148 words
An electric motor drive system, comprising: a torque generating means for driving a drive wheel; a gear assembly unit including a first to a third element, the first element being adapted to receive a rotation from said torque generating means and the second element being adapted to transmit the rotation to an output shaft connected to the drive wheel; a case to house said gear assembly unit therein; and a rotation regulation means including a first coupler and a one-way clutch, the coupler and the one-way clutch being connected to the third element of said gear assembly unit, either of the coupler and the one-way clutch being disposed between the third element and said case, the other being disposed between the third element and a different one of the elements, so that the output shaft is only allowed to rotate in one direction when said coupler is coupled.
Claim 3
Dependent Claim
30 words
The electric motor drive system according to claim 1, wherein said gear assembly unit is a planetary gear unit consisting of a sun gear, a carrier and a ring gear.
Claim 4
Dependent Claim
22 words
The electric motor drive system according to claim 1, further comprising a second coupler in a parallel state to the one-way clutch.
Claim 5
Dependent Claim
29 words
The electric motor drive system according to claim 1, wherein said torque generating means is an internal combustion engine connected to the first element of said gear assembly unit.
Claim 6
Dependent Claim
23 words
The electric motor drive system according to claim 4, further comprising an electric motor for the output shaft to rotate the drive wheel.
Claim 7
Dependent Claim
18 words
The electric motor drive system according to claim 1, wherein the torque generating means is an electric motor.
Claim 8
Dependent Claim
24 words
The electric motor drive system according to claim 1, wherein the torque generating means consists of an electric motor and an internal combustion engine.
Claim 9
Dependent Claim
55 words
The electric motor drive system according to claim 2, wherein the first to third elements of said planetary gear unit are a carrier, a ring gear and a sun gear, respectively, the first coupler being disposed between the sun gear and said case, the one-way clutch being disposed between the sun gear and the carrier.
Claim 10
Dependent Claim
55 words
The electric motor drive system according to claim 2, wherein the first to third elements of said planetary gear unit are a ring gear, a carrier and a sun gear, respectively, the one-way clutch being disposed between the sun gear and said case, the first coupler being disposed between the sun gear and the carrier.
Claim 11
Dependent Claim
22 words
The electric motor drive system according to claim 9, wherein the first coupler is disposed between the sun gear and said case.
Claim 12
Dependent Claim
55 words
The electric motor drive system according to claim 2, wherein the first to third elements of said planetary gear unit are a sun gear, a carrier and a ring gear, respectively, the one-way clutch being disposed between the ring gear and said case, the first coupler being disposed between the ring gear and the carrier.
Claim 13
Dependent Claim
22 words
The electric motor drive system according to claim 11, wherein the second coupler is disposed between the ring gear and said case.
Claim 14
Dependent Claim
56 words
The electric motor drive system according to claim 2, wherein the first to third elements of said planetary gear unit are a carrier, a sun gear and a ring gear, respectively, the one-way clutch being disposed between the ring gear and the carrier, and the first coupler being disposed between the ring gear and said case.
Claim 15
Dependent Claim
22 words
The electric motor drive system according to claim 13, wherein the second coupler is disposed between the ring gear and the carrier.
Claim 16
Dependent Claim
57 words
The electric motor drive system according to claim 2, wherein the first to third elements of said planetary gear unit are a carrier, a ring gear and a sun gear, respectively, the first coupler being disposed between the sun gear and said case, and the one-way clutch being disposed between the sun gear and the ring gear.
Claim 17
Dependent Claim
23 words
The electric motor drive system according to claim 15, wherein the second coupler is disposed between the sun gear and the ring gear.
Claim 18
Dependent Claim
37 words
The electric motor drive system according to claim 1, further comprising an acceleration sensor to detect the vehicle speed and a controller to effect the first coupler when the vehicle speed is less than a predetermined speed.
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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) | 1998-06-26 | 1998-12-26 | 1999-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-06-26 | 2002-12-26 | 2003-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-06-26 | 2006-12-26 | 2007-06-27 | $7700.00 | Window Closed / Lapsed |