US 12,330,280 B2
Driving tool
Norikazu Baba, Anjo (JP); Shun Kuriki, Anjo (JP); Kazusa Fukuda, Anjo (JP); and Masaya Nagao, Anjo (JP)
Assigned to MAKITA CORPORATION, Anjo (JP)
Filed by MAKITA CORPORATION, Anjo (JP)
Filed on Mar. 17, 2023, as Appl. No. 18/122,795.
Claims priority of application No. 2022-079287 (JP), filed on May 13, 2022.
Prior Publication US 2023/0364761 A1, Nov. 16, 2023
Int. Cl. B25C 1/04 (2006.01)
CPC B25C 1/047 (2013.01) 19 Claims
OG exemplary drawing
 
1. A driving tool, comprising:
a piston configured to move in a driving direction owing to a pressure of a gas;
a driver configured to drive a driving member by moving integrally with the piston in the driving direction; and
a wheel configured to move the driver in a direction opposite to the driving direction, wherein:
the driver includes a plurality of engaged portions arranged in a longitudinal direction of the driver;
the wheel includes a last engaging portion and a preceding engaging portion preceding the last engaging portion, the preceding engaging portion and the last engaging portion being configured to move the driver in a direction opposite to the driving direction by successively engaging an engaged portion of the plurality of engaged portions as the wheel rotates around a rotation center axis;
the last engaging portion and the preceding engaging portion are formed in a cylindrical shape and extend in a direction parallel to the rotation center axis of the wheel;
the last engaging portion and the preceding engaging portion each includes an outer area positioned further from the rotation center axis of the wheel;
the outer area of the preceding engaging portion is positioned further away from the driver when engaging the engaged portion in comparison to the outer area of the last engaging portion when engaging the engaged portion; and
a center of the preceding engaging portion is nearer to the rotation center axis of the wheel than a center of the last engaging portion.