Hydro torque skeg foil

Details Hydro torque skeg foil Hydro torque skeg foil

1980-01-04

1981-12-08

Cherry, Johnny D.

Marine propulsion

Screw propeller

Having means to control flow around propeller

440 78, B63H 2126

Patent

active

043045570

ABSTRACT:
Disclosed herein is a marine propulsion device including a downwardly extending propulsion leg, the lower end of the propulsion leg including a gear case, a drive shaft housed in the propulsion leg, a propeller shaft located in the gear case, and a propeller mounted on the propeller shaft, rotary operation of the marine propulsion device producing a steering torque on the propulsion leg. The propulsion leg also includes a skeg extending downwardly from the gear case, the rearward edge of the skeg comprising a foil for producing a torque on the propulsion leg opposite to the torque produced by rotary operation of the marine propulsion device.

REFERENCES:
patent: 803671 (1905-11-01), Curtis
patent: 1580486 (1926-04-01), Hass
patent: 1610678 (1926-12-01), Hiorth
patent: 1716962 (1929-06-01), Johnson
patent: 2847967 (1958-08-01), Kiekhaefer
patent: 3537419 (1970-11-01), Holtermann et al.
patent: 3799103 (1974-03-01), Granholm
patent: 3817202 (1974-06-01), Holtermann

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