US 12,269,567 B2
Fin-based watercraft propulsion system
Martin Spencer Garthwaite, Bainbridge Island, WA (US)
Assigned to Fishboat Incorporated, Bainbridge Island, WA (US)
Filed by Fishboat Incorporated, Bainbridge Island, WA (US)
Filed on May 29, 2023, as Appl. No. 18/203,038.
Application 18/203,038 is a continuation of application No. 17/845,553, filed on Jun. 21, 2022, granted, now 11,760,455.
Application 17/845,553 is a continuation of application No. 17/079,489, filed on Oct. 25, 2020, granted, now 11,364,984, issued on Jun. 21, 2022.
Application 17/079,489 is a continuation of application No. 15/967,552, filed on Apr. 30, 2018, granted, now 10,315,744, issued on Jun. 11, 2019.
Application 17/845,553 is a continuation of application No. 15/101,901, granted, now 10,308,335, issued on Jun. 4, 2019, previously published as PCT/US2014/068572, filed on Dec. 4, 2014.
Claims priority of provisional application 62/621,620, filed on Jan. 25, 2018.
Claims priority of provisional application 62/618,080, filed on Jan. 17, 2018.
Claims priority of provisional application 62/507,275, filed on May 17, 2017.
Claims priority of provisional application 62/492,144, filed on Apr. 29, 2017.
Claims priority of provisional application 61/936,419, filed on Feb. 6, 2014.
Claims priority of provisional application 61/911,888, filed on Dec. 4, 2013.
Prior Publication US 2023/0303225 A1, Sep. 28, 2023
Int. Cl. B63H 1/36 (2006.01); B63B 21/56 (2006.01); B63B 21/66 (2006.01); B63B 35/00 (2020.01)
CPC B63H 1/36 (2013.01) [B63B 21/56 (2013.01); B63B 21/66 (2013.01); B63B 2035/008 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A robotic system comprising: a body; at least one flexible fin attached to the body at a first location; and a first rotatable mass operatively coupled to the body at a second location removed and separate from the at least one flexible fin, wherein angular acceleration of the first rotatable mass relative to the body creates a reaction torque that rotates the body to deform the at least one flexible fin.