Marine propulsion – Operator powered drive for propelling means – Rotary cranking arm
Patent
1997-10-31
1999-03-09
Swinehart, Ed L.
Marine propulsion
Operator powered drive for propelling means
Rotary cranking arm
B63H 1620
Patent
active
058792082
ABSTRACT:
The apparatus has front and rear floatable members pivotally coupled together such that the two members may turn relative to each other. A seat is coupled to the rear member for supporting a person. Paddles are coupled to a paddle shaft supported by the front member. Pedals are coupled to the paddle shaft for rotating the paddles shaft and hence the paddles for movement of the paddles through the water for moving the apparatus in the water. In the preferred embodiment, a paddle support member is coupled to opposite ends of the paddle shaft and paddles are coupled to the outward sides of the paddle support members. In another embodiment, two rods are pivotally coupled to opposite sides of the rear end of the front member respectively. Paddles are coupled to the lower ends of the two rods respectively. Each of the paddles includes two plate members pivotally coupled to the lower end of its rod. As the lower ends of the two rods are moved rearward, the plate members of the paddles move outward to extended positions to move the front and rear members in the water. As the lower ends of the two rods are moved forward, the plate members of the paddles move together to minimize movement of the front and rear members in the water.
REFERENCES:
patent: 514489 (1894-02-01), McCloskey
patent: 1920391 (1933-08-01), Herwig
patent: 3999501 (1976-12-01), Duarte
patent: 5308268 (1994-05-01), Schmid
patent: 5577940 (1996-11-01), Adler
Swinehart Ed L.
Zobal Arthur F
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