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. 30, 2002
Filed:
Jul. 06, 2000
Akio Takamura, Fuchu, JP;
Jack Barney Sing, Chandler, AZ (US);
Peter Jon Shigo, Gilbert, AZ (US);
Colin Poon, Tsuen Wan, HK;
George Michael Hornick, Anderson, SC (US);
One World Technologies, Inc., Anderson, SC (US);
Abstract
A portable hand-held apparatus for punching 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 control circuit connected to a limit switch and a main switch, and an output connected to a driving mechanism. The control circuit is configured to selectively operate the driving mechanism in response to assertion of the main switch by the user to drive the punch and die assembly from the deactuated position, over the working cycle, through the actuated position to form the punched hole, and continue to drive the punch and die assembly to the deactuated position to complete the cycle and assert the limit switch. The control circuit halts operation of the driving mechanism in response to assertion of the limit switch.