Patent US5688174A successfully refreshed from Google Patents.
Patent US3695401A successfully refreshed from Google Patents.
US3695401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reverse and reduction gear for ships
Assignee: Yanmar Co Ltd
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Filing: 1970-11-16
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Granted: 1972-10-03
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Expires: 1990-11-16
Abstract
Abstract A reverse and reduction gear for ships wherein three clutch units are arranged arcuately around a large gear mounted on a thrust shaft, each clutch unit comprising an auxiliary shaft, loosely carrying driving and driven gears, and a clutch interposed between the two gears, and the driving gear of the center clutch unit is coupled to the input shaft and meshed with the driving gears of the clutch units on both sides, said driven gears of the three clutch units being meshed with the common large gear on the thrust shaft.
Inventors
- 👤 Michisuke Nagasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:10
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/02; F16H3/08; F16H3/14; B; B63; B63H; B63H23/00; B63H23/02; B63H23/08; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19377; Y10T74/19386; Y10T74/19409; Y10T74/19414; Y10T74/19484; Y10T74/19488
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
134 words
A reverse and reduction gear for ships comprising an input shaft, a thrust shaft, a large gear securely mounted on the thrust shaft, and three clutch units arranged in an arcuate formation around the large gear, characterized in that each of the clutch units includes an auxiliary shaft parallel to the thrust shaft, a driving gear and a drivEn gear both loosely mounted on the auxiliary shaft, and a clutch disposed between said two gears, and the driving gear of the center clutch unit is coupled to said input shaft and is, at the same time, in mesh with the driving gears of the clutch units adjacent to both sides of the center unit, and the driven gears of the three clutch units are meshed with the common large gear of the thrust shaft.
Claim 2
Dependent Claim
134 words
A reverse and reduction gear for ships comprising an input shaft, a thrust shaft, a large gear securely mounted on the thrust shaft, and three clutch units arranged in an arcuate formation around the large gear, characterized in that each of the clutch units includes an auxiliary shaft parallel to the thrust shaft, a driving gear and a drivEn gear both loosely mounted on the auxiliary shaft, and a clutch disposed between said two gears, and the driving gear of the center clutch unit is coupled to said input shaft and is, at the same time, in mesh with the driving gears of the clutch units adjacent to both sides of the center unit, and the driven gears of the three clutch units are meshed with the common large gear of the thrust shaft.
Claim 3
Dependent Claim
41 words
A reverse and reduction gear for ships according to claim 1 characterized in that the center clutch unit serves as an astern clutch unit and the adjoining clutch units on both sides of the center unit serve as ahead clutch units.
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) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |