Air encircling marine propeller apparatus

Details Air encircling marine propeller apparatus Air encircling marine propeller apparatus

1994-06-21

1996-01-09

Sotelo, Jesus D.

Marine propulsion

Screw propeller

Having means to control flow around propeller

416 90A, B63H 116

Patent

active

054824826

ABSTRACT:
An air encircled marine thruster cowling includes a cowling that surrounds a propeller and provides an annular blanket of air around the slipstream from the propeller. The cowling includes an inner conical section around the propeller and an outer tubular section around the conical section to form an annular space around the conical section. A duct leads exhaust gas from the engine into the annular space, and an additional duct leads moving ambient air into the annular space, as when a boat is in motion.

REFERENCES:
patent: 4304558 (1981-12-01), Holtermann
Sales Brochure, Pump Jet Technology For Outboard Motors, ACT, Inc., Marine Propulsion Division.

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