The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 09, 2002
Filed:
Aug. 23, 1999
Kenneth M. Brazell, Phoenix, AZ (US);
John E. Nemazi, Bloomfield Hills, MI (US);
Akio Takamura, Phoenix, AZ (US);
Masatoshi Fukinuki, Fuchu, JP;
Jeffrey M. Dils, Chandler, AZ (US);
Robert G. Everts, Chandler, AZ (US);
Ryobi North America, Inc., Anderson, SC (US);
Abstract
An apparatus for punching knock-outs out of light gauge steel framing studs used in building construction to form holes of sufficient size to allow building wiring and piping to extend therethrough includes a compact hand held frame ( ) having a generally C-shaped frame portion ( ). The C-shaped frame portion has spaced apart ends ( ) located along a working axis ( ) for receiving a stud ( ) therebetween. A punch and die assembly ( ) includes a punch ( ) and a die ( ) mounted opposite each other at the ends of the C-shaped frame portion. An actuatable driving mechanism ( ) mounted to the frame is operable to drive the punch and dic assembly over a working stroke range between a deactuated position ( ) and an actuated position ( ). In the actuated position, the punch extends into the die by punching through the stud to produce a knock-out ( ).