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:
Jan. 29, 1985
Filed:
Sep. 30, 1982
Applicant:
Inventor:
Harry C Oakes, Perry, NY (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B26F / ; B23B / ;
U.S. Cl.
CPC ...
30360 ; 30361 ; 408710 ;
Abstract
Hole punch apparatus comprises a worm and worm wheel whereby an ordinary electric drill can be employed to punch holes in sheet metal by means of a punch and die. The several disclosed structures variously comprise a shear pin for preventing overload, a handle for rapid engagement of the punch and die with the workpiece, bushings to protect against unusual torques, and special threads.