US 12,466,048 B2
Reciprocating tool having offset spur gear and counterweighting assembly
Brent A Kuehne, Red Lion, PA (US); Zhicheng Qian, Suzhou (CN); Xin Bao, Suzhou (CN); Shihuai Wang, Suzhou (CN); Dongrong Qiu, Suzhou (CN); and Jiachao Xu, Suzhou (CN)
Assigned to Black & Decker Inc., New Britain, CT (US)
Filed by Black & Decker Inc., New Britain, CT (US)
Filed on Dec. 27, 2023, as Appl. No. 18/396,926.
Prior Publication US 2025/0214220 A1, Jul. 3, 2025
Int. Cl. B25F 5/00 (2006.01); B23D 51/16 (2006.01); F16F 15/28 (2006.01)
CPC B25F 5/006 (2013.01) [F16F 15/28 (2013.01); B23D 51/16 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A reciprocating power tool, comprising:
a motor;
a reciprocating device;
a counterbalancing device; and
a transmission coupled between the motor and the reciprocating device, and between the motor and the counterbalancing device, wherein the transmission includes a gear shaft configured to rotate in response to a driving force from the motor, the gear shaft including:
a first gear portion formed on a first portion of the gear shaft, the first gear portion driving a first output gear, the first output gear driving the reciprocating device; and
a second gear portion formed on a second portion of the gear shaft, the second gear portion driving a second output gear, the second output gear driving the counterbalancing device.