Marine propulsion – Operator powered drive for propelling means – Rotary cranking arm
Patent
1992-10-19
1994-05-03
Mitchell, David M.
Marine propulsion
Operator powered drive for propelling means
Rotary cranking arm
114 61, 114362, 440 21, B63H 21175
Patent
active
053082680
ABSTRACT:
To permit rapid assembly and disassembly of the water cycle so that, when disassembled, it can be stored or transported in minimum space. The cycle, which has at least three flotation bodies (2a, 2b, 2c), which are elongated or torpedo shaped, is formed of tubular frame elements which are coupled together by push-in connectors with spring-loaded pin locks (9, 30, 30', 33, 41) so that individual frame elements (6,7,8; 12,13,14; 24,25) of the cycle can be disassembled into the frame elements, or, selectively, snapped together. The flotation bodies are preferably inflatable and formed with a keel. A pedal and crank arrangement is coupled to a transmission which can drive a propeller or, directly via a chain, a paddle wheel. To prevent damage to the propeller if it meets an obstruction, a propeller attachment and a housing therefor is releasably mounted on a frame for pivoting movement upwardly and downwardly, with various positions of the propellers selectable by a spring loaded engagement hook engaging in recesses in a positioning disk; and, to permit lateral deflection, the housing is rotatable about an axis transverse to the direction of movement (A) of the cycle, and positioned in predetermined location by a spring-loaded claw clutch to permit release, in the lateral direction, if an obstruction is encountered.
REFERENCES:
patent: 1920391 (1933-08-01), Herwig
patent: 2674971 (1954-04-01), Therrien
patent: 3336004 (1967-08-01), Edie et al.
patent: 4077351 (1978-03-01), Girona
patent: 4664051 (1987-05-01), Newkirk
patent: 4813514 (1989-03-01), Lathers
patent: 5011441 (1991-04-01), Foley et al.
A. G. Schmid AG
Avila Stephen P.
Mitchell David M.
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