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Publication numberUSD660675 S1
Publication typeGrant
Application numberUS 29/393,797
Publication dateMay 29, 2012
Filing dateJun 9, 2011
Priority dateJun 9, 2011
Publication number29393797, 393797, US D660675 S1, US D660675S1, US-S1-D660675, USD660675 S1, USD660675S1
InventorsDonald Gringer, Yuan Fang Cheng
Original AssigneeAllway Tools, Inc.
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Twin blade head for a knife
US D660675 S1
Abstract  available in
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  1. The ornamental design for a twin blade head for a knife, as shown and described.

FIG. 1 is a top, front and left side perspective view of the twin blade head for a knife showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof, the rear elevational view being a mirror image thereof; and,

FIG. 5 is a right side elevational view thereof, the left side elevational view being a mirror image thereof.

The straight horizontal lines below the twin blade head for a knife in FIGS. 1, 4, and 5 indicate boundary between claimed and unclaimed subject matter. The remaining broken lines in the figures show portions of the knife that form no part of the claim.

Non-Patent Citations
1"Tile Installation Tools", Ace Industrial (Ningbo) Co., Ltd, 2005.
2Allway Tools, Soft Grip Tools for Hard Hat Jobs, 2008.
3Better Tools Full Line Catalog,, 2007.
4Betters Tools LLC Catalog,, 2003.
5Biss Product Development, Striker Hand Tools,
6Husky Medium Utility Knife (front and back views).
7Husky Sure-Grip Folding Lock-Back Utility Knife.
8Lewis Knives, Knives and Blades, 2007, p. 5.
9Nebo Tools, The Perfect All Purpose Work-Knife, Folding Lock-Back Blade & Lock-Blade Utility Knife.
10Olfa Products, Safety Cutters & Blades,, 2007.
11Olo Safety Carton Cutter, Division of World Kitchen, Inc., Flyer, 2007.
12Pacific Handy Cutter, Safety First System, Store Supply Safety Catalog, 2004.
13Rong Xin Tools, Folding Lock-Back Utility Knife.
14Safecutting, Michigan Safety Products,, 2011.
16 *Selection of Twin Blade Heads for Kever Kutters. Snagged Mar. 21, 2012 at
17Spectrum Tools Catalog, Spectrum Tools, A Division of Pacific Handy Cutter, Inc., Costa Mesa, California,
18Stanley Hand Tools, Knives, Fixed Blades, The Stanley Works, 2005.
19Vanguard Technetics, Inc.,, 2011.
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US20140173914 *Dec 21, 2012Jun 26, 2014Hsiu-Man Yu ChenCutter
U.S. ClassificationD08/98