US 12,337,450 B2
Pusher mechanism for powered fastener driver
Travis W. Leathrum, Milwaukee, WI (US); and Troy C. Thorson, Cedarburg, WI (US)
Assigned to MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed by MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed on Nov. 9, 2023, as Appl. No. 18/505,627.
Application 18/505,627 is a continuation of application No. 17/313,096, filed on May 6, 2021, granted, now 11,865,683.
Claims priority of provisional application 63/020,739, filed on May 6, 2020.
Prior Publication US 2024/0131670 A1, Apr. 25, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. B25C 1/00 (2006.01); B25C 1/04 (2006.01); B25C 1/06 (2006.01)
CPC B25C 1/003 (2013.01) [B25C 1/047 (2013.01); B25C 1/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A powered fastener driver comprising:
a housing;
a nosepiece coupled to the housing;
a driver blade movable within the nosepiece between a ready position and a driven position;
a canister magazine coupled to the nosepiece and including collated fasteners arranged in a coil; and
a pusher mechanism coupled to the nosepiece for individually transferring collated fasteners from the canister magazine to a driver channel in the nosepiece, wherein the pusher mechanism includes:
a linkage assembly including:
a support arm pivotably mounted on a first fixed pivot;
a finger pivotably coupled to the support arm via a first floating pivot point;
a lever pivotably coupled to the support arm via a second floating pivot point; and
a fork pivotably coupled to the lever via a second fixed pivot; and
a feeder arm engaged with the fork, wherein the feeder arm sequentially pushes individual fasteners from the collated fasteners into the driver channel as the pusher mechanism is actuated by an impact of the driver blade during a retraction stroke of the driver blade from the driven position toward the ready position.