Airboat transmission

Details Airboat transmission Airboat transmission

1995-09-28

1998-03-10

Wright, Dirk

Machine element or mechanism

Gearing

Plural power paths to and/or from gearing

F16H 122

Patent

active

057248672

ABSTRACT:
A gear-based airboat transmission is provided for driving a pair of coaxial, counter-rotating propellers. A drive shaft couplable to an engine crank shaft extends rearward into the transmission case, and a pair of coaxial hollow driven shafts extend rearward out of the transmission case, to which are attachable a pair of propellers. A first gear train, containing an even number of gears, reverses the rotational direction of the engine; a second gear train, containing an odd number of gears, retains the rotational direction of the engine. Improved stability characteristics are imparted by supporting the drive shaft at two points within the case and also by positioning the drive and the driven 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: 2185545 (1940-01-01), Egan
patent: 2216013 (1940-09-01), Kenney
patent: 2222102 (1940-11-01), Johnson
patent: 2347906 (1944-05-01), Hatcher
patent: 2516078 (1950-07-01), Schmitter
patent: 3244024 (1966-04-01), Flowers

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