Patent US4848177A successfully refreshed from Google Patents.
US4848177A
Expired / Lapsed
US
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Automatic transmission
Assignee: Aisin AW Co Ltd
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Filing: 1988-03-11
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Granted: 1989-07-18
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Expires: 2008-03-11
Abstract
Abstract An automatic transmission having a one-way brake in which an outer race is fixed to a rotational member of a planetary gear unit or to a transaxle case and, conversely, an inner race is fixed to the transaxle case or the rotational member of the planetary gear unit, characterized in that the rotational member is provided with an oil infeed plate co-rotatable therewith. Oil dispersed from the input shaft of the transmission is introduced to the one-way brake by pressure produced by the centrifugal force of the rotating oil infeed plate. Thus, burn-out of the one-way clutch is prevented since the clutch is sufficiently lubricated at the time of overrun.
Inventors
- 👤 Masakatsu Miura
- 👤 Kazuhisa Ozaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:17
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/04; F16H57/0467; F16H57/02; F16H57/025; B; B60; B60K; B60K17/00; B60K17/04; B60K17/06; F16H3/00; F16H3/44; F16H3/62; F16H3/66; F16H3/663; F16H57/042; F16H57/0427; F16H2200/00; F16H2200/003; F16H2200/0039; F16H2200/20; F16H2200/2002; F16H2200/2005; F16H2200/202; F16H2200/2023; F16H2200/203; F16H2200/2041; F16H2200/2066; F16H2200/2079; F16H2200/2082; F16H57/048; F16H57/0482; F16H57/0484; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19991
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
72 words
An automatic transmission having a one-way brake in which an an outer race is fixed to a rotational member of a planetary gear unit and an inner race is fixed to the transaxle case, characterized in that said rotational member is provided with an oil infeed plate co-rotatable therewith, centrifugal force produced by rotation of said plate generating a pressure for introducing oil, dispersed from an input shaft, to the one-way brake.
Claim 2
Dependent Claim
72 words
An automatic transmission having a one-way brake in which an an outer race is fixed to a rotational member of a planetary gear unit and an inner race is fixed to the transaxle case, characterized in that said rotational member is provided with an oil infeed plate co-rotatable therewith, centrifugal force produced by rotation of said plate generating a pressure for introducing oil, dispersed from an input shaft, to the one-way brake.
Claim 3
Dependent Claim
23 words
The automatic transmission according to claim 1, characterized in that the surface of said oil infeed plate is provided with projections and recesses.
Claim 4
Dependent Claim
22 words
The automatic transmission according to claim 2, characterized in that said projections and recesses are formed radially of said oil infeed plate.
Claim 5
Dependent Claim
24 words
The automatic transmission according to claim 3, characterized in that said projections and recesses are formed in spiral fashion in a direction of rotation.
Claim 6
Dependent Claim
47 words
The automatic transmission according to claim 1, characterized in that said oil infeed plate is inclined in such a manner that a surface of said oil feed plate grows progressively nearer to said one-way brake the further the distance along the radius of said oil infeed plate.
Claim 7
Dependent Claim
37 words
The automatic transmission according to claim 1, characterized in that co-rotation of said rotational member and said oil infeed plate is achieved by securing them together by one of splining, press-fitting and securing them together by caulking.
Claim 8
Dependent Claim
23 words
The automatic transmission according to claim 1, characterized in that the surface of said oil infeed plate is provided with projections and recesses.
Claim 9
Dependent Claim
22 words
The automatic transmission according to claim 7, characterized in that said projections and recesses are formed radially of said oil infeed plate.
Claim 10
Dependent Claim
24 words
The automatic transmission according to claim 8, characterized in that said projections and recesses are formed in spiral fashion in a direction of rotation.
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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) | 1992-07-17 | 1993-01-16 | 1993-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-17 | 1997-01-16 | 1997-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-17 | 2001-01-16 | 2001-07-18 | $7700.00 | Window Closed / Lapsed |