Patent US4557980A successfully refreshed from Google Patents.
Patent US3302485A successfully refreshed from Google Patents.
US3302485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple speed forward and reverse transmission
Assignee: Dana Inc
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Filing: 1964-03-23
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Granted: 1967-02-07
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Expires: 1984-03-23
Abstract
No abstract record available.
Inventors
- 👤 Gerst Chris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:23
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/02; F16H3/08; F16H3/085; F16H37/00; F16H2700/00; F16H2700/02; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19074; Y10T74/19079; Y10T74/19084; Y10T74/19219; Y10T74/19233; Y10T74/19377; Y10T74/19386; Y10T74/19405
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
221 words
A COUNTERROTATING TRANSMISSION COMPRISING A FIRST SHAFT, A FIRST AND A SECOND CLUTCH SHAFT, AN INTERMEDIATE SHAFT, FIRST GEAR MEANS INCLUDING A FIRST GEAR MOUNTED ON SAID INTERMEDIATE SHAFT CONSTANTLY DRIVINGLY CONSIMULTANEOUS ROTATION IN OPPOSITE DIRECTIONS, SECOND GEAR MEANS CARRIED BY SAID FIRST SHAFT AND SAID FIRST AND SECOND CLUTCH SHAFTS AND INCLUDING A FIRST AND A SECOND CLUTCH MEANS, SAID SECOND GEAR MEANS BEING OPERATIVE TO DRIVE SAID CLUTCH SHAFTS IN THE SAME DIRECTION WITH RESPECT TO EACH OTHER AND WITH RESPECT TO SAID INTERMEDIATE SHAFT, SAID FIRST AND SECOND CLUTCH MEANS BEING INDEPENDENTLY OPERABLE AND ADAPTED TO SELECTIVELY COUPLE SAID FIRST AND SAID SECOND CLUTCH SHAFTS TO SAID FIRST SHAFT RESPECTIVELY, AND THIRD GEAR MEANS CARRIED BY SAID INTERMEDIATE SHAFT AND SAID FIRST AND SAID SECOND CLUTCH SHAFT AND INCLUDING A THIRD AND FOURTH CLUTCH MEANS, SAID THIRD GEAR MEANS INCLUDING A SECOND GEAR MOUNTED ON SAID INTERMEDIATE SHAFT AND AXIALLY DISPLACED ALONG SAID INTERMEDIATE SHAFT FROM SAID FIRST GEAR, SAID THIRD GEAR MEANS BEING OPERATIVE TO DRIVE SAID FIRST AND SECOND CLUTCH SHAFTS IN THE SAME DIRECTION WITH RESPECT TO EACH OTHER AND IN THE OPPOSITE DIRECTION WITH RESPECT TO SAID INTERMEDIATE SHAFT, SAID THIRD AND FOURTH CLUTCH MEANS BEING INDEPENDENTLY OPERABLE AND ADOPTED TO SELECTIVELY COUPLE SAID FIRST AND SECOND CLUTCH SHAFTS TO SAID INTERMEDIATE SHAFT RESPECTIVELY.
Claim 2
Dependent Claim
221 words
A COUNTERROTATING TRANSMISSION COMPRISING A FIRST SHAFT, A FIRST AND A SECOND CLUTCH SHAFT, AN INTERMEDIATE SHAFT, FIRST GEAR MEANS INCLUDING A FIRST GEAR MOUNTED ON SAID INTERMEDIATE SHAFT CONSTANTLY DRIVINGLY CONSIMULTANEOUS ROTATION IN OPPOSITE DIRECTIONS, SECOND GEAR MEANS CARRIED BY SAID FIRST SHAFT AND SAID FIRST AND SECOND CLUTCH SHAFTS AND INCLUDING A FIRST AND A SECOND CLUTCH MEANS, SAID SECOND GEAR MEANS BEING OPERATIVE TO DRIVE SAID CLUTCH SHAFTS IN THE SAME DIRECTION WITH RESPECT TO EACH OTHER AND WITH RESPECT TO SAID INTERMEDIATE SHAFT, SAID FIRST AND SECOND CLUTCH MEANS BEING INDEPENDENTLY OPERABLE AND ADAPTED TO SELECTIVELY COUPLE SAID FIRST AND SAID SECOND CLUTCH SHAFTS TO SAID FIRST SHAFT RESPECTIVELY, AND THIRD GEAR MEANS CARRIED BY SAID INTERMEDIATE SHAFT AND SAID FIRST AND SAID SECOND CLUTCH SHAFT AND INCLUDING A THIRD AND FOURTH CLUTCH MEANS, SAID THIRD GEAR MEANS INCLUDING A SECOND GEAR MOUNTED ON SAID INTERMEDIATE SHAFT AND AXIALLY DISPLACED ALONG SAID INTERMEDIATE SHAFT FROM SAID FIRST GEAR, SAID THIRD GEAR MEANS BEING OPERATIVE TO DRIVE SAID FIRST AND SECOND CLUTCH SHAFTS IN THE SAME DIRECTION WITH RESPECT TO EACH OTHER AND IN THE OPPOSITE DIRECTION WITH RESPECT TO SAID INTERMEDIATE SHAFT, SAID THIRD AND FOURTH CLUTCH MEANS BEING INDEPENDENTLY OPERABLE AND ADOPTED TO SELECTIVELY COUPLE SAID FIRST AND SECOND CLUTCH SHAFTS TO SAID INTERMEDIATE SHAFT RESPECTIVELY.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |