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:
Jun. 10, 2014
Filed:
Sep. 08, 2011
Harold Peter Lindelof, Eden Prairie, MN (US);
Marvin J. Halfen, Hastings, MN (US);
David J. Gilbertson, Hastings, MN (US);
Harold Peter Lindelof, Eden Prairie, MN (US);
Marvin J. Halfen, Hastings, MN (US);
David J. Gilbertson, Hastings, MN (US);
Smead Manufacturing Company, Hastings, MN (US);
Abstract
A prong style file fastener, and method of manufacturer, is disclosed which has a protective element to prevent damage to paper documents and personal injury. In one embodiment, the prongs of the fastener is covers with a heat shrinkable sheath. In another, the prongs are overcoated with a powder coating which is melted thereon. A method of applying the sheath to the prongs uses a pair of jaws to drive the sheath onto the prongs. In the case of the powdercoat covering, the production line uses a cam drive sprocket retractor to release the line onto a takeup.