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:
Feb. 17, 1981
Filed:
Apr. 11, 1979
Applicant:
Inventors:
Richard H Doyle, Mt. Prospect, IL (US);
Bernard W Geist, Melrose Park, IL (US);
Assignee:
Duo-Fast Corporation, Franklin Park, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25C / ;
U.S. Cl.
CPC ...
227-8 ; 227113 ; 227116 ; 227136 ;
Abstract
A fastener driving tool includes a magnetized driver or a driver with an embedded permanent magnet that is of a tapered configuration. The tool also includes a fastener feeding mechanism that wedges or ejects a fastener from a fastener strip whereupon the fastener is attracted during free-flight to the driver by the magnet. The tool further includes a stop lever that prevents feeding of fasteners if the driver is in a position other than the full return position.