Auxiliary propelling device

Marine propulsion – Screw propeller

Patent

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Details

416244B, 416245A, 440 81, B63H 507

Patent

active

056117183

ABSTRACT:
An auxiliary propelling structure can be attached to an existing propeller system including a propeller having a boss, a propeller shaft and a tightening nut screwed onto the end of the shaft. The auxiliary propelling structure includes an auxiliary boss that is approximately cylindrical to enclose closely the tightening nut of the existing propeller system and having an internal partition with a central through-hole. The partition is pressed against the tightening nut.

REFERENCES:
patent: 2351356 (1944-06-01), Meyer
patent: 3422905 (1969-01-01), Muller
patent: 4391567 (1983-07-01), Ciampolillo
patent: 4538962 (1985-09-01), McCain

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