Marine propulsion – Air propelled boat
Patent
1993-04-21
1998-09-15
Barefoot, Galen L.
Marine propulsion
Air propelled boat
244 60, 244 69, B63H 702
Patent
active
058071490
ABSTRACT:
An airboat propelling system is provided wherein a propeller is rotated by a hollow driven shaft. A further embodiment is provided wherein two propellers are rotated in opposite directions by counter-rotating coaxial hollow driven shafts. Floating stiffener bearings positioned between the coaxial hollow driven shafts suppress flexion and protect the opposing surfaces of the shafts. These innovative techniques permit a minimization of size and weight, as well as a reduction in rotational speed of the propellers, maximizing efficiency and decreasing noise.
REFERENCES:
patent: 1329387 (1920-02-01), Fay
patent: 1734268 (1929-11-01), Moorhouse
patent: 1842055 (1932-01-01), Stout
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: 4932280 (1990-06-01), Becker et al.
patent: 5090869 (1992-02-01), Wright
Barefoot Galen L.
K-Way Engineering, Inc.
LandOfFree
Airboat systems and methods for increasing engine efficiency whi 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 systems and methods for increasing engine efficiency whi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Airboat systems and methods for increasing engine efficiency whi will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-81779