US 11,897,583 B2
Watercraft device with hydrofoil and electric propulsion system
Donald Lewis Montague, Paia, HI (US); Joseph Andrew Brock, Alameda, CA (US); Tomasz Pawel Bartczak, Toronto (CA); Matthew Campbell Greaves, Oxley (AU); Alec Korver, Alameda, CA (US); and Dmitri Stepanov, Alameda, CA (US)
Assigned to Kai Concepts, LLC, Alameda, CA (US)
Filed by Kai Concepts, LLC, Alameda, CA (US)
Filed on Apr. 22, 2021, as Appl. No. 17/238,085.
Claims priority of provisional application 63/079,769, filed on Sep. 17, 2020.
Claims priority of provisional application 63/014,014, filed on Apr. 22, 2020.
Prior Publication US 2021/0347442 A1, Nov. 11, 2021
Int. Cl. B63B 1/24 (2020.01); B63B 1/28 (2006.01); B63B 32/40 (2020.01); B63B 32/10 (2020.01)
CPC B63B 1/242 (2013.01) [B63B 1/28 (2013.01); B63B 32/40 (2020.02); B63B 1/246 (2013.01); B63B 32/10 (2020.02)] 14 Claims
OG exemplary drawing
 
1. A watercraft comprising:
a board extending longitudinally and having a top surface and a bottom surface;
a hydrofoil having a strut attached at the bottom surface of the board;
a propulsion system coupled to the strut and operable to drive the watercraft through a body of water; and
a movable portion configured to move relative to a fixed portion of the board to facilitate shifting of weight relative to the fixed portion of the board as the propulsion system is operated, the movable portion movable longitudinally along the board from a rear portion of the board to a front portion of the board.