Utility cutter

• US 10,137,588 B1
• Filed: 04/03/2017
• Issued: 11/27/2018
• Est. Priority Date: 03/01/2013
• Status: Active Grant

• Current Assignee: Raymond E. Davis
• Original Assignee: Raymond E. Davis
• Inventors: Davis, Raymond E.
• Primary Examiner(s): Sanchez, Omar Flores
• Application Number:
  US15/478,216
• Time in Patent Office: 603 Days
• CPC Class Codes: B26B 1/08 with sliding blade with detachable blades B26B5/001
• CPC Class Codes: B26B 29/02 Guards or sheaths for knives
• CPC Class Codes: B26B 3/08 specially adapted for cutting cardboard, or wall, floor, or like covering materials
• CPC Class Codes: B26B 5/003 comprising retraction means for the blade or the blade holder
• CPC Class Codes: B26B 5/005 specially adapted for cutting cardboard, or wall, floor or like covering materials

Abstract

A knife includes a handle that includes a gripping surface; one or more blades positioned in one or more recesses of the handle that extend from an opening of the handle; a guide coupled to the blade near a distal end of the blade opposite the proximal end, the guide including a contoured surface configured to engage a workpiece wherein a portion of the guide is pointed and configured to puncture the workpiece and another portion of the guide is configured to smoothly abut an underside of the workpiece once the guide has been inserted into the workpiece, and the handle further includes cut-away regions just ahead of the leading edge of cutting edges of the one or more blades, the cut-away portions configured to provide relief for bunching sections of a workpiece being cut by the knife.

Claims

1. A utility cutter, comprising:

a handle that comprises a gripping surface;

one or more blades configured to extend from the handle, the blade comprising a cutting portion which includes one or more cutting edges and a non-cutting portion including a thickness; and

a guide including a guide length in a direction substantially parallel with the non-cutting portion of the one or more blades and a guide width in a direction substantially transverse the guide length;

the guide attached directly and fixedly to the blade independent of engaging contact between the guide and the handle, the guide positioned in an attaching position on the one or more blades to expose at least a portion of the cutting portion and cover at least a portion of the non-cutting portion, the guide comprising a contoured surface that comprises at least one pointed edge to pierce through a corrugated material, the guide further comprising a first ramped side and a second ramped side, the first and second ramped sides directly adjacent the at least one pointed edge, the ramped sides transition to a widening of the guide, and the guide width at the attaching portion is greater than the thickness of the non-cutting portion of the blade; and

,

the utility cutter further comprising a cut-away region ahead of the one or more cutting edges of the blade configured to accept a bunched portion of a workpiece.

2. The utility cutter of claim 1, wherein the guide is semi-permanently or permanently attached to the blade.

3. The utility cutter of claim 1, wherein the guide is integrally attached to the blade.

4. The utility cutter of claim 1, wherein the guide comprises a contoured surface that comprises at least one pointed edge and a non-cutting surface adjacent the at least one pointed edge.

5. The utility cutter of claim 1, wherein the pointed edge is configured to engage a material.

6. The utility cutter of claim 1, wherein the pointed edge is configured to pierce a corrugated material.

7. The apparatus of claim 1, wherein the pointed edge is configured to pierce a corrugated material and shield the cutting portion of the blade from a product contained in the corrugated material.

8. The apparatus of claim 1, further comprising sloped sections sloping away from either side of the blade.

9. The utility cutter according to claim 1, further comprising sloped sides substantially parallel with a longitudinal side of the one or more blades, and wherein the angle between the longitudinal side of the blade and at least one of the sloping sides is between 100 and 120 degrees.

10. The utility cutter according to claim 1, further comprising sloped sides substantially parallel with a longitudinal side of the one or more blades, and wherein the angle between the longitudinal side of the blade and at least one of the sloping sides is between 105 and 115 degrees.

11. The utility cutter according to claim 1, further comprising a mounting angle between a leading edge of the cutting edge of the one or more blades and the handle body of between 110 and 130 degrees.

12. The utility cutter of claim 1, wherein the guide portion of the at least one blade is a sintered form.