Patent US2567296A successfully refreshed from Google Patents.
US3667321A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous transmission, especially for automobile vehicles
Assignee: Valeo SE
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Filing: 1969-08-07
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Granted: 1972-06-06
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Expires: 1989-08-07
Abstract
Abstract A continuous power transmission device provided between a movement take-off and a receiving shaft, especially for automobile vehicles, comprising a reversible continuous speedvarying device and a planetary train with four elements, in which two elements of said train are continuously active, one of said elements being coupled to the movement take-off through the intermediary of said reversible continuous speed-varying device and the other element being coupled to said shaft, each of the two remaining elements, known as change-over elements being adapted to be rendered active or passive, and further comprising means for rendering one of said change-over elements active while the other element is passive, and vice versa.
Inventors
- 👤 Jean Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:36
CPC Classifications
F; F16; F16H; F16H37/00; F16H37/02; F16H37/06; F16H37/08; F16H37/0833; F16H37/084; F16H37/0846; F16H47/00; F16H47/02; F16H47/04; F16H2037/088; F16H2037/0886
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
138 words
A continuous power transmission for use in motor vehicles arranged between an input shaft and an output shaft, comprising a continuous speed-varying device driven by said input shaft, a plurality of planetary gear trains each including a plurality of drivingly connected gear elements providing parallel power paths of different ratio, one of said planetary gear trains having a first element driven by said speed-varying device and a second element common to a first element of another of said planetary gear trains, said one planetary gear train having a third element common to a second element of said another planetary gear train and driving said output shaft, said another planetary gear train having a third element, and control means for selectively coupling either of said first and third elements of said another planetary gear train to said input shaft.
Claim 2
Dependent Claim
138 words
A continuous power transmission for use in motor vehicles arranged between an input shaft and an output shaft, comprising a continuous speed-varying device driven by said input shaft, a plurality of planetary gear trains each including a plurality of drivingly connected gear elements providing parallel power paths of different ratio, one of said planetary gear trains having a first element driven by said speed-varying device and a second element common to a first element of another of said planetary gear trains, said one planetary gear train having a third element common to a second element of said another planetary gear train and driving said output shaft, said another planetary gear train having a third element, and control means for selectively coupling either of said first and third elements of said another planetary gear train to said input shaft.
Claim 3
Dependent Claim
41 words
A transmission as claimed in claim 1, said one planetary gear train having an overall ratio m1 and said another planetary gear train having an overall ratio m2, the following relationship being satisfied: m1 X m2 1 + m1 + m2.
Claim 4
Dependent Claim
35 words
A transmission as claimed in claim 1, said one planetary gear train having an overall ratio m1 and said another planetary gear train having an overall ratio m2, the following relationship being satisfied: m1 m2.
Claim 5
Dependent Claim
44 words
A transmission as claimed in claim 1, said one planetary gear train having an overall ratio m1 and said another planetary gear train having an overall ratio m2, the following relationships being satisfied: m1 X m2 1 + m1 + m2 : m1 m2.
Claim 6
Dependent Claim
123 words
A transmission as claimed in claim 1, having a fixed frame, and a further planetary gear train between said third element of said one planetary gear train and said output shaft, said further planetary gear train comprising a first element coupled to said third element of said one planetary gear train, a second element adapted to be selectively coupled to the input shaft, a third element coupled to the output shaft, a fourth element adapted to be selectively coupled to said fixed frame, and control means for selectively coupling said second element of said further train to the input shaft or making it free, and for selectively coupling said fourth element of said further train to said fixed frame or making it free.
Claim 7
Dependent Claim
24 words
A transmission as claimed in claim 5, the last-named control means selectively coupling said second element of said further train to said fixed frame.
Claim 8
Dependent Claim
20 words
A transmission as claimed in claim 1, and a gear box interposed between said input shaft and said control means.
References Cited (Backward Citations)
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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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |