Title:
FIN PROPULSION UNIT
Document Type and Number:
Japanese Patent JPS57126790
Kind Code:
A
Abstract:
PURPOSE: To obtain propulsive force by enabling a pair of front and rear fins to be driven by the strength of human legs.
CONSTITUTION: Left and right pedals 4 are engaged, through a gear casing 2, with a fin drive shaft 12 fitted with front and rear fins 3, 3 which move in the opposite directions, relatively to each other when the pedals are operated. Each fin 3 is provided with a pitch adjuster 9 connected with a cable which is also connected to a variable pitch lever 8, passing around a pulley. With this arrangement, the pitch of the fins 3, 3 may be changed by raising and lowering the variable pitch lever 8.
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Inventors:
NOMURA MAMORU
Application Number:
JP1138581A
Publication Date:
August 06, 1982
Filing Date:
January 26, 1981
Export Citation:
Assignee:
NOMURA MAMORU
International Classes:
B63H1/06; B63H16/08; B63H16/20; (IPC1-7): B63H1/36; B63H16/12