US 12,328,087 B2
Power tool having stamped brake resistor
David Rose, Pewaukee, WI (US); Daniel J. Tomcheck, Denmark, WI (US); and Vincent M. Zornow, Milwaukee, WI (US)
Assigned to Milwaukee Electric Tool Corporation, Brookfield, WI (US)
Filed by MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed on Feb. 12, 2024, as Appl. No. 18/438,723.
Application 18/438,723 is a continuation of application No. 17/126,372, filed on Dec. 18, 2020, granted, now 11,901,850.
Claims priority of provisional application 62/949,900, filed on Dec. 18, 2019.
Prior Publication US 2024/0258941 A1, Aug. 1, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H02P 3/12 (2006.01); B27B 5/38 (2006.01); H02P 3/22 (2006.01)
CPC H02P 3/12 (2013.01) [B27B 5/38 (2013.01); H02P 3/22 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A brake resistor assembly selectively connectable to a motor via a brake switch, the brake resistor assembly comprising:
a stamped brake resistor including a terminal portion and a resistive portion, the resistive portion including a planar serpentine path forming a plurality of leaves and a gap between each leaf, the resistive portion further including a first leg, a second leg perpendicular to the first leg, a third leg, and a fourth leg perpendicular to the third leg;
a first insulating pad and a second insulating pad that sandwich the stamped brake resistor; and
a first insulating sleeve and a second insulating sleeve configured to restrict electrical current flowing through the stamped brake resistor.