US 12,390,908 B2
Internal dual pawl mechanism for indexable motorized ratchet tools
Joshua M. Beer, Kenosha, WI (US)
Assigned to Snap-on Incorporated, Kenosha, WI (US)
Filed by Snap-on Incorporated, Kenosha, WI (US)
Filed on May 25, 2021, as Appl. No. 17/329,423.
Prior Publication US 2022/0379444 A1, Dec. 1, 2022
Int. Cl. B25B 21/00 (2006.01); B25B 23/00 (2006.01); B25F 5/02 (2006.01)
CPC B25B 21/004 (2013.01) [B25B 23/0028 (2013.01); B25F 5/02 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A tool having a first housing portion, the tool comprising:
a ratchet housing portion pivotably coupled to the first housing portion by a pivot pin,
a drive member disposed on the pivot pin and adapted to be driven linearly along the pivot pin;
a yoke rotatably disposed in the ratchet housing and operably coupled to the drive member, wherein linear movement of the drive member along the pivot pin causes rotational motion of the yoke; and
a pawl mechanism disposed in the ratchet housing portion and adapted to selectively transmit rotational motion of the yoke to a drive lug in either one of first and second rotational directions, wherein the pawl mechanism includes:
a pawl carrier rotatably disposed in the ratchet housing portion;
first and second pawls pivotably coupled to the pawl carrier; and
a selector switch rotatably coupled to the pawl carrier and adapted to selectively position the first and second pawls to transmit rotational motion of the yoke to the drive lug in one of the first and second rotational directions.