US 11,833,656 B2
Chain saw
Kohei Oishi, Anjo (JP); Ryo Sunazuka, Anjo (JP); and Yoshifumi Watanabe, Anjo (JP)
Assigned to MAKITA CORPORATION, Anjo (JP)
Filed by MAKITA CORPORATION, Anjo (JP)
Filed on Dec. 15, 2021, as Appl. No. 17/551,478.
Claims priority of application No. 2020-214589 (JP), filed on Dec. 24, 2020.
Prior Publication US 2022/0203513 A1, Jun. 30, 2022
Int. Cl. B27B 17/08 (2006.01); B27B 17/02 (2006.01); B27B 17/12 (2006.01); B25F 5/00 (2006.01)
CPC B25F 5/008 (2013.01) [B27B 17/02 (2013.01); B27B 17/08 (2013.01); B27B 17/12 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A chain saw comprising:
a saw chain;
a guide bar to which the saw chain is attached;
a sprocket configured to run the saw chain along a periphery of the guide bar;
a prime mover configured to rotate the sprocket;
an oil tank configured to store oil to be supplied to the saw chain;
a housing that houses the prime mover and the oil tank;
a bolt protruding from the housing and penetrating a hole disposed in the guide bar;
a nut screwed onto the bolt to fix the guide bar to the housing; and
a heat dissipating structure configured to dissipate heat from the bolt to the oil in the oil tank.