US 12,491,570 B2
Scroll shear tool
Simo A. Huhtanen, Columbus, OH (US); Julia C. Marsh, Milwaukee, WI (US); and Terry L. Timmons, Jr., Oconomowoc, WI (US)
Assigned to MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed by MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed on Jun. 23, 2023, as Appl. No. 18/340,354.
Claims priority of provisional application 63/355,501, filed on Jun. 24, 2022.
Prior Publication US 2023/0415249 A1, Dec. 28, 2023
Int. Cl. B23D 29/00 (2006.01); B23D 36/00 (2006.01)
CPC B23D 29/005 (2013.01) [B23D 36/0008 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A scroll shear tool comprising:
a tool body housing a motor, wherein the motor is configured to transmit rotational power through a transmission to a reciprocatory spindle, the transmission including a drive member, wherein the reciprocatory spindle includes a first end that is supported by the drive member and a second end distal from the drive member;
a blade support arm at least partially surrounding the reciprocatory spindle;
a fixed blade coupled to the blade support arm;
a moving blade coupled to the second end of the reciprocatory spindle; and
a blade clearance adjustment mechanism configured to adjust a horizontal blade clearance between the fixed blade and the moving blade, wherein the blade clearance adjustment mechanism includes
an adjustment bushing supported within a bushing pathway, wherein the adjustment bushing includes an internal bore that supports the reciprocatory spindle and wherein a relative position of the adjustment bushing within the bushing pathway affects a relative position of the moving blade with respect to the fixed blade, and
an adjustment member coupled to the adjustment bushing, wherein the adjustment member is configured to change the relative position of the adjustment bushing between a first position associated with a first blade clearance and a second position associated with a second blade clearance.