US 11,878,400 B2
Powered fastener driver
Coby A. Nettleton, Milwaukee, WI (US); Leonard F. Mikat-Stevens, Milwaukee, WI (US); Alex D. Servais, Slinger, WI (US); Eric R. Albrecht, Waterford, WI (US); Jacob N. Zimmerman, Pewaukee, WI (US); John M. Jubeck, Mequon, WI (US); Andrew R. Palm, Shorewood, WI (US); Casey L. Bonath, Milwaukee, WI (US); and Daniel J. Sheridan, Greendale, WI (US)
Assigned to MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed by MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed on Jan. 20, 2022, as Appl. No. 17/579,774.
Claims priority of provisional application 63/180,722, filed on Apr. 28, 2021.
Claims priority of provisional application 63/151,240, filed on Feb. 19, 2021.
Claims priority of provisional application 63/139,549, filed on Jan. 20, 2021.
Prior Publication US 2022/0226977 A1, Jul. 21, 2022
Int. Cl. B25C 5/15 (2006.01); B25C 1/04 (2006.01); B25C 1/06 (2006.01); B25C 1/00 (2006.01); B25C 5/13 (2006.01); B25C 1/12 (2006.01); B25C 1/18 (2006.01)
CPC B25C 5/15 (2013.01) [B25C 1/001 (2013.01); B25C 1/047 (2013.01); B25C 1/06 (2013.01); B25C 1/123 (2013.01); B25C 1/188 (2013.01); B25C 5/13 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A fastener driver comprising:
a housing defining a head portion and a handle portion;
a drive mechanism positioned within the housing;
a firing mechanism including:
a primary guide member supported within the head portion of the housing,
a secondary guide member spaced from the primary guide member and supported within the head portion of the housing,
a piston slidable along the primary guide member, wherein the primary guide member extends through the piston,
a driver blade attached to the piston and configured to be movable along a drive axis,
a biasing member configured to move the piston and the driver blade from a top dead center (TDC) position toward a bottom dead center (BDC) position; and
a bracket coupled for movement with the piston, the bracket defining a bore that is sized to receive the secondary guide member, the bracket slidably supported on the secondary guide member; and
a lifter assembly operated by the drive mechanism and having a pin, wherein the pin is configured to be rotated by the drive mechanism and engage the bracket to return the piston and the driver blade towards the TDC position, against the bias of the biasing member.