US 12,290,908 B2
Powered fastener driver
Bryan C. Ward, Wauwatosa, WI (US); Jacob N. Zimmerman, Pewaukee, WI (US); Andrew J. Weber, Cudahy, WI (US); Marcus Wechselberger, Milwaukee, WI (US); and Leonard F. Mikat-Stevens, Milwaukee, WI (US)
Assigned to MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed by MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed on Feb. 14, 2023, as Appl. No. 18/168,965.
Application 18/168,965 is a continuation of application No. 17/210,979, filed on Mar. 24, 2021, granted, now 11,975,432.
Claims priority of provisional application 63/129,056, filed on Dec. 22, 2020.
Claims priority of provisional application 63/056,904, filed on Jul. 27, 2020.
Claims priority of provisional application 62/994,361, filed on Mar. 25, 2020.
Prior Publication US 2023/0191574 A1, Jun. 22, 2023
Int. Cl. B25C 1/04 (2006.01)
CPC B25C 1/043 (2013.01) [B25C 1/047 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A fastener driver comprising:
a cylinder;
a moveable piston positioned within the cylinder;
a driver blade attached to the piston and movable therewith between a top-dead-center (TDC) position and a bottom-dead-center (BDC) position, the driver blade including a body having a first end configured to be attached to the piston and a second end opposite the first end, wherein a length of the driver blade is defined between the first end and the second end, wherein a driving axis extends centrally through the first end and the second end along the length of the driver blade, wherein the driver blade includes a first side laterally offset from the driving axis, a second side opposite the first side and laterally offset from the driving axis, a front side, and a back side, and wherein the body includes a plurality of teeth extending laterally from the first side; and
a lifter operable to move the driver blade from the BDC position toward the TDC position, the lifter including a plurality of lugs engageable with the teeth of the driver blade when moving the driver blade from the BDC position toward the TDC position;
wherein the body of the driver blade has a first thickness and at least a first tooth of the teeth has a second thickness that is greater than the first thickness,
wherein a side of the at least first tooth and the back side of the driver blade lie in the same plane,
wherein the body includes a width defined between the first side and the second side that is perpendicular to the length and the first thickness, and
wherein the first tooth has a stepped configuration relative to the body.