US 12,459,611 B2
Garbage collection watercraft
Takuma Ishida, Shizuoka (JP); Junya Tsukada, Shizuoka (JP); and Junya Onoue, Shizuoka (JP)
Assigned to YAMAHA HATSUDOKI KABUSHIKI KAISHA, Shizuoka (JP)
Filed by YAMAHA HATSUDOKI KABUSHIKI KAISHA, Iwata (JP)
Filed on Aug. 11, 2022, as Appl. No. 17/885,599.
Claims priority of application No. 2021-180000 (JP), filed on Nov. 4, 2021.
Prior Publication US 2023/0135883 A1, May 4, 2023
Int. Cl. B63B 35/32 (2006.01); B63B 1/12 (2006.01); E02B 15/10 (2006.01)
CPC B63B 35/32 (2013.01) [B63B 1/121 (2013.01); E02B 15/10 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A garbage collection watercraft comprising:
a hull;
a collection box including an intake port to receive garbage, the collection box being movably held by the hull at a collection position in which the collection box is at least partially located underwater and at a pull-up position located higher than the collection position;
a buoyant material attached to the collection box to raise the collection box from the collection position to the pull-up position by a buoyant force; and
a stopper able to switch between a first fixed state to fix the collection box to the hull at the collection position and a released state to release the collection box; wherein
the buoyant material is attached to a bottom surface of the collection box; and
in a case that the stopper is set to the released state, the buoyant material raises the collection box from the collection position to the pull-up position by the buoyant force.