Marine propulsion – Screw propeller – Having transmission
Patent
1998-08-13
2000-04-25
Sotelo, Jesus D.
Marine propulsion
Screw propeller
Having transmission
440 37, 416129, B63H 2300
Patent
active
060537825
ABSTRACT:
A gear-based airboat transmission is provided for driving a pair of coaxial, counter-rotating propellers. The transmission includes a fore output gear rotatably affixable within a housing and affixable to the inner shaft for rotating the outer propeller. An aft output gear is rotatably affixable within the housing and is affixable to the outer shaft coaxial with the inner shaft for rotating the inner propeller opposite the outer. The aft output gear is generally coaxial with the fore output gear. An intermediate gear shaft has a fore end and an aft end, and both ends are opposedly and rotatably affixable within the housing. This bracing confers additional stability to the transmission, conferring longer life and decreased vibration. An intermediate gear is mounted thereon, and is positioned in driving relation to the fore output gear. A drive gear is rotatably affixable within the housing and is affixed for corotation with a drive shaft. The drive gear has a fore portion that is positioned in driving relation to the intermediate gear and an aft portion that is positioned in driving relation to the aft output gear. Improved stability characteristics are imparted by supporting the drive shaft at two points within the case and also by positioning the drive and the output shafts in vertical alignment. The adaptability of the gear-based transmission to being coupled with an automobile engine confers improved noise and efficiency characteristics.
REFERENCES:
patent: 1329387 (1920-02-01), Fay
patent: 1734268 (1929-11-01), Moorhouse
patent: 1842055 (1932-01-01), Stout
patent: 2228638 (1941-01-01), Mercier
patent: 2244763 (1941-06-01), Bugatti
patent: 2380952 (1945-08-01), Dewey
patent: 2525708 (1950-10-01), Morris
patent: 2531032 (1950-11-01), Desmoulins
patent: 2584115 (1952-02-01), Dinsmoor
patent: 3500784 (1970-03-01), Reynolds
patent: 3991629 (1976-11-01), Dearnley
patent: 4127080 (1978-11-01), Lakiza et al.
patent: 4392839 (1983-07-01), Aucktor
patent: 4421489 (1983-12-01), Van Veldhuizen
patent: 4426049 (1984-01-01), Stewart
patent: 4527978 (1985-07-01), Zackrisson
patent: 4820241 (1989-04-01), Nakamura
patent: 4826458 (1989-05-01), Irwin et al.
patent: 4932280 (1990-06-01), Becker et al.
patent: 5030148 (1991-07-01), Fujita
patent: 5090869 (1992-02-01), Wright
Bell Louis A.
Sotelo Jesus D.
LandOfFree
Airboat transmission, lubrication system, and associated method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Airboat transmission, lubrication system, and associated method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Airboat transmission, lubrication system, and associated method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-989244