Nonresonant boat motor

Details Nonresonant boat motor Nonresonant boat motor

1999-06-03

2000-07-04

Avila, Stephen

Marine propulsion

Operator powered drive for propelling means

Rotary cranking arm

440 52, B63H 1620

Patent

active

060830611

ABSTRACT:
A nonresonant boat motor for imparting motion to a boat without generating a substantial level of sound. The nonresonant boat motor includes a spiral spring coupled to an axle assembly, a propeller shaft coupled to the axle assembly, a ratchet assembly for providing tension in the spring, and an axle rotation control assembly.

REFERENCES:
patent: 621136 (1899-03-01), Rasmussen
patent: 2273815 (1942-02-01), Bevington
patent: 2360157 (1944-10-01), Olson
patent: 2841000 (1958-07-01), Parks et al.
patent: 3747555 (1973-07-01), Lay

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