HYDRAULIC HAND-HELD KNOCKOUT PUNCH DRIVER

• Main Authors: MYRHUM, JAMES, O. JR, ELLICE, JOSEPH H, HOLLY, JEFFREY S, KEHOE, SEAN T, THORSON, TROY C, EBNER, JEREMY R
• Format: Patent
• Language: English; French; German
• Published: 11.05.2016
• Subjects: BLASTING; COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDEDFOR; CUTTING; CUTTING-OUT; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOTPARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOTOTHERWISE PROVIDED FOR; FLUID-PRESSURE ACTUATORS; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; HAND CUTTING TOOLS; HAND TOOLS; HEATING; HYDRAULICS OR PNEUMATICS IN GENERAL; LIGHTING; MANIPULATORS; MECHANICAL ENGINEERING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERCUSSIVE TOOLS; PERFORATING; PERFORMING OPERATIONS; PORTABLE POWER-DRIVEN TOOLS; PUNCHING; PUNCHING METAL; SEVERING; SEVERING BY MEANS OTHER THAN CUTTING; STAMPING-OUT; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; TRANSPORTING; WEAPONS; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

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.