US 12,134,453 B2
Pod propulsion device
Yuichi Hidaka, Saitama (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Jan. 18, 2022, as Appl. No. 17/577,537.
Claims priority of application No. 2021-013565 (JP), filed on Jan. 29, 2021.
Prior Publication US 2022/0242543 A1, Aug. 4, 2022
Int. Cl. B63H 21/38 (2006.01); B63H 1/20 (2006.01); B63H 21/17 (2006.01)
CPC B63H 21/38 (2013.01) [B63H 1/20 (2013.01); B63H 21/17 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A pod propulsion device comprising:
a pod configured to be disposed in water;
a rotation shaft rotatably supported by the pod to be, the rotation shaft being rotatable about a predetermined axis and having an end portion projecting out from the pod;
a screw fixed to the end portion of the rotation shaft;
an electric motor installed in the pod to rotationally drive the rotation shaft;
multiple guide blades integrally formed on the pod and to be arranged at intervals in a circumferential direction of the pod, each guide blade extending out radially from an outer surface of the pod; and
a cooling circuit for cooling the electric motor,
wherein the cooling circuit includes a cooling liquid passage formed to pass through an interior of at least one of the guide blades.