Flapping manual propulsion system for personal watercraft
OwnerPeigen Jiang, Warren Jibu Xionginventors
Life of this patent
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Abstract
A watercraft propulsion system includes a shaft slidably disposed through an opening formed in a hull, a pull-up cable coupled to the shaft at a predetermined location of the shaft for pulling the shaft upward, a pull-down cable coupled to the shaft at the predetermined location of the shaft for pulling the shaft downward, a fluke disposed beneath a bottom of the watercraft, the fluke having a front portion and a horizontal plate behind the front portion, the front portion being solely and removably attached to a lower end of the shaft, wherein when the shaft is pulled downward by the pull-down cable, the horizontal plate tilts upward, and when the shaft is pulled upward by the pull-up cable, the horizontal plate tilts downward.
Claims20
A propulsion system for a watercraft, the system comprising:
- a shaft slidably disposed through an opening formed in a hull of the watercraft;
- a pull-up cable coupled to the shaft at a predetermined location of the shaft for pulling the shaft upward;
- a pull-down cable coupled to the shaft at the predetermined location on the shaft for pulling the shaft downward;
- a fluke disposed beneath a bottom of the watercraft, the fluke having a front portion and a horizontal plate behind the front portion, the front portion being solely and removably attached to a lower end of the shaft,
- wherein when the shaft is pulled downward by the pull-down cable, the horizontal plate tilts upward with a rear end of the horizontal plate higher than a front end of the horizontal plate;
- and when the shaft is pulled upward by the pull-up cable, the horizontal plate tilts downward with the rear end of the horizontal plate lower than the front end of the horizontal plate.
Dependencies are inferred from the claim text.