US 12,296,442 B2
Impact tool
Tokuo Hirabayashi, Anjo (JP); Haruki Tejima, Anjo (JP); Kazuma Aoki, Anjo (JP); and Kazunori Kinoshita, Anjo (JP)
Assigned to MAKITA CORPORATION, Anjo (JP)
Filed by MAKITA CORPORATION, Anjo (JP)
Filed on Mar. 8, 2024, as Appl. No. 18/599,282.
Application 18/599,282 is a continuation of application No. 18/060,094, filed on Nov. 30, 2022, granted, now 11,958,170.
Claims priority of application No. 2021-201914 (JP), filed on Dec. 13, 2021; and application No. 2021-201915 (JP), filed on Dec. 13, 2021.
Prior Publication US 2024/0208013 A1, Jun. 27, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. B25F 5/00 (2006.01); B25B 21/02 (2006.01); B25B 23/18 (2006.01); B25F 5/02 (2006.01)
CPC B25B 21/02 (2013.01) [B25B 23/18 (2013.01); B25F 5/02 (2013.01)] 22 Claims
OG exemplary drawing
 
1. An impact tool comprising:
a brushless motor, which includes a stator and a rotor configured to rotate relative to the stator;
a spindle, which is rotated by the brushless motor;
a hammer, which is held on the spindle,
an anvil, which is impacted in a rotational direction by the hammer, the anvil having a quadrangular-column part and having a maximum tightening torque of 1,000 N·m or more and 2,500 N·m or less;
a polymer housing, which houses the brushless motor;
a hammer case, which is connected to the polymer housing and houses the hammer and the spindle, the hammer case including a hammer-housing part that houses the hammer and a bearing-retaining part that holds a bearing;
a cover, which covers at least a portion of the hammer case;
three or more optical members, which are held on the cover;
three or more light-emitting devices, which are respectively disposed rearward of the three or more optical members; and
a light circuit board on which the three or more light-emitting devises are fixed;
wherein:
the three or more optical members respectively face the light-emitting devices and are configured to transmit illumination light emitted from the three or more light-emitting devices; and
the cover, the three or more optical members, the three or more light-emitting devices, and the light circuit board are all disposed around the bearing-retaining part and forward of a rear end of the anvil.