Marine propulsion – Oscillating propelling means – Fishtail motion propelling means
Patent
1983-03-07
1984-08-07
Basinger, Sherman D.
Marine propulsion
Oscillating propelling means
Fishtail motion propelling means
440 32, B63H 1612
Patent
active
044641265
ABSTRACT:
The exercising apparatus described herein is an exercising board having a maneuverable fin which may be used to propel the board by its upward and downward motion. The board is used on water and may be used in surf riding. The rider stands on the board and moves a vertical handle backward and forward. The lower end of this handle is angled in such a manner that a fin attached at the lower end moves a flexible fin upward and downward in a manner similar to a fish's fin and provides a propelling force. The force required to move this handle and the attached fin provides a very beneficial exercise to the arms, legs and body.
REFERENCES:
patent: 3361106 (1968-01-01), Hildebrand
Basinger Sherman D.
Monacelli Walter J.
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