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US 9,522,719 B1Granted
Watercraft driven by a reciprocating fin
OwnerRobert Yonoverinventor
Life of this patent
Estimating the term…
Abstract
A watercraft for moving along a direction of movement on water includes a flexible fin with a front face and a rear face to be disposed in the water; and one end of the fin is movable along a line in a reciprocating motion along a direction transverse to the front and rear faces and the direction of movement of the watercraft, causing an opposite free end of the fin to flex back and forth in the water to propel the watercraft in the direction of movement.
Claims24
A watercraft for moving along a direction of movement on water, comprising:
- a) a flexible fin with a front face and a rear face for placement in the water;
- and
- b) one end of said flexible fin is movable along a line in a reciprocating motion along a direction transverse to said front and rear faces and said direction of movement of said watercraft, causing an opposite free end of said flexible fin to flex back and forth in the water to propel said watercraft in said direction of movement.
A watercraft for moving along a direction of movement on water, comprising:
- a) first and second flexible fins each with a front face and a rear face for placement in the water;
- b) said first and second fins are movable along a line in opposite directions in a reciprocating motion along a direction transverse to said front and rear faces and said direction of movement of said watercraft, causing an opposite free end of each of said first and second fins to flex back and forth in the water to propel said watercraft in said direction of movement.
Dependencies are inferred from the claim text.