HYDRAULIC HAND-HELD KNOCKOUT PUNCH DRIVER

Organization Name

MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor(s)

James O. Myrhum, Jr. of West Bend WI (US)

Troy C. Thorson of Cedarburg WI (US)

Jeremy R. Ebner of Milwaukee WI (US)

Sean T. Kehoe of Hartland WI (US)

Joseph H. Ellice of Greenfield WI (US)

Jeffrey S. Holly of West Bend WI (US)

HYDRAULIC HAND-HELD KNOCKOUT PUNCH DRIVER

This abstract first appeared for US patent application 18955275 titled 'HYDRAULIC HAND-HELD KNOCKOUT PUNCH DRIVER

Original Abstract Submitted

A hand-held knockout driver includes a main housing having a handle portion, a motor positioned within the main housing, a pump assembly driven by the motor, and a secondary housing coupled to the main housing and defining a bore therein. The hand-held knockout driver also includes a working piston moveable within the bore from a rest position to an actuated position to define a piston throw distance therebetween. The hand-held knockout driver also includes a draw stud coupled to the working piston, a die coupled to the secondary housing, and a punch coupled to the draw stud opposite the working piston for movement therewith relative to the die. The die has a depth greater than the piston throw distance.