US 12,391,352 B2
Outboard motor
Junya Onoue, Shizuoka (JP); Hiroki Koga, Shizuoka (JP); Yoshiyuki Kadobayashi, Shizuoka (JP); Kimitaka Saruwatari, Shizuoka (JP); and Akihiro Noma, Shizuoka (JP)
Assigned to YAMAHA HATSUDOKI KABUSHIKI KAISHA, Shizuoka (JP)
Filed by YAMAHA HATSUDOKI KABUSHIKI KAISHA, Iwata (JP)
Filed on Nov. 28, 2022, as Appl. No. 17/994,425.
Claims priority of application No. 2022-075993 (JP), filed on May 2, 2022.
Prior Publication US 2023/0348035 A1, Nov. 2, 2023
Int. Cl. B63H 20/28 (2006.01); B63H 20/02 (2006.01); B63H 20/14 (2006.01); B63H 20/32 (2006.01)
CPC B63H 20/285 (2013.01) [B63H 20/02 (2013.01); B63H 20/14 (2013.01); B63H 20/32 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An outboard motor comprising:
a bracket to mount the outboard motor on a watercraft;
an engine;
an upper case below the engine;
a lower case below the upper case;
a transmission to transmit a driving force of the engine;
a clutch connected to the transmission;
a cooling water passage connected to the engine and located in the upper case and the lower case;
a first pump connected to the transmission via the clutch and driven by the driving force of the engine to send cooling water to the engine via the cooling water passage; and
a second pump connected to the transmission and driven by the driving force of the engine to send the cooling water to the engine through the cooling water passage.