Media cutting device

• US 8,176,640 B2
• Filed: 04/21/2006
• Issued: 05/15/2012
• Est. Priority Date: 04/22/2005
• Status: Expired due to Fees

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: 3M Innovative Properties Company (3M Company)
• Inventors: Gullicks, Scott D., Mueller, Gerald E., Packard, Joy A., Pearson, Scott D.
• Primary Examiner(s): LANDRUM, EDWARD F
• Application Number:
  US11/408,781
• Publication Number:
  US 20060236550A1
• Time in Patent Office: 2,216 Days
• Field of Search: 30/2, 302/78, 302/80, 302/86, 30289-291, 302/94, 302/95, 303/14, 303/17, 493/459, 493/462
• US Class Current: 30/294
• CPC Class Codes: B26B 25/00 Hand cutting tools involving disc blades, e.g. motor-driven details or components, e.g. casings, bodies, of portable power-driven tools not particularly related to the operation performed B25F5/00
• CPC Class Codes: B26B 27/002 Tools using wires as cutting means
• CPC Class Codes: B26B 3/08 specially adapted for cutting cardboard, or wall, floor, or like covering materials
• CPC Class Codes: B26B 5/005 specially adapted for cutting cardboard, or wall, floor or like covering materials
• CPC Class Codes: B26B 5/008 for performing several incisions simultaneously; for cutting cubes

Abstract

The present invention pertains to a device for cutting media, such as paper, cardboard, and metal foils. The device has a body that includes a sidewall extending from the body. The device has means for cutting the media disposed in the body. The means for cutting the media has a cutting edge having a leading edge and a trailing edge. The sidewall shrouds at least a portion of the cutting edge. The sidewall has a media contact point that is disposed away from the trailing edge in the direction of the leading edge.

Claims

1. A device for cutting media comprising:

a body comprising a handle, a cover extending from the handle to an exposed end and a sidewall nonmoveably connected with and extending from the body to a free end;

a guide having opposing top and bottom surfaces and an attached end and a free end, wherein the attached end of the guide extends from the body; and

means for cutting the media disposed in the body, the means for cutting comprising a cutting edge having a leading edge and a trailing edge;

wherein the sidewall shrouds at least a portion of the cutting edge, and with reference to the cutting edge, the sidewall has a media contact point that is disposed away from the trailing edge in the direction of the leading edge, and the media contact point of the sidewall does not extend beyond the bottom surface of the guide;

wherein the bottom surface of the guide is below the free end of the sidewall;

wherein a portion of the sidewall is below the top surface of the guide;

wherein the handle terminates at a handle end opposite the cover, and further wherein the attached end of the guide is located longitudinally between the handle end and the exposed end of the cover, and further wherein extension of the guide from the attached end to its free end is in a direction away from the handle end such that a longitudinal distance between the free end and the handle end is greater than a longitudinal distance between the attached end and the handle end, and is greater than a longitudinal distance between the exposed end of the cover and the handle end;

wherein when the origin of a Cartesian coordinate system coincides with the leading edge of the cutting edge and the x-z plane lies substantially coplanar with the top surface of the guide, the trailing edge of the cutting edge lies in the positive y direction;

and wherein, during cutting, the cutting edge and the sidewall exert sufficient frictional forces on the media to create a deformation in the media near the leading edge of the cutting edge such that a user does not need to cut the media on a supporting substrate.

2. The device of claim 1, wherein the media contact point of the sidewall lies between the leading edge and the trailing edge.

3. The device of claim 1, wherein the body and the sidewall are integrally formed.

4. The device of claim 1, wherein the cover is transparent.

5. The device of claim 1, wherein the device further comprises a visual indicator selected from the group consisting of (i) a reference mark on the cover and (ii) a reference mark on the guide.

6. The device of claim 1, wherein the free end of the guide extends beyond the exposed end of the cover.

7. The device of claim 1, wherein the free end of the guide has a substantially rounded geometry or substantially a pointed geometry.

8. The device of claim 1, wherein a bottom surface of the guide has a widest width that is larger than the widest width of the sidewall.

9. The device of claim 1, wherein the guide further comprises a rib extending from the bottom surface or a side surface.

10. The device of claim 1 wherein the media contact point is below the top surface of the guide.

11. A media cutting device comprising:

a body comprising an elongated handle, a cover having a planar region and being nonmoveably connected with and extending from the handle to an exposed end, and a sidewall extending from the cover to a free end;

a guide disposed generally beneath the cover, the guide having opposing top and bottom surfaces, an attached end, a free end; and

a blade disposed in the guide, the blade comprising a cutting edge having a leading edge and a trailing edge, wherein the sidewall shrouds at least a portion of the blade and with reference to the blade, the sidewall comprises a media contact point that is disposed away from the trailing edge in the direction of the leading edge;

wherein the bottom surface of the guide is below the free end of the sidewall;

wherein the media contact point is below the top surface of the guide but does not extend beyond the bottom surface of the guide;

wherein when the origin of Cartesian coordinate system coincides with the leading edge of the cutting edge and the x-z plane lies substantially coplanar with the top surface of the guide, the trailing edge of the cutting edge lies in the positive y direction;

wherein the handle terminates at a handle end opposite the cover, and further wherein the attached end of the guide is located longitudinally between the handle end and the exposed end of the cover, and further wherein extension of the guide from the attached end to the free end is in a direction away from the handle end such that a longitudinal distance between the free end and the handle end is greater than a longitudinal distance between the attached end and the handle end, and is greater than a longitudinal distance between the exposed end of the cover and the handle end;

and wherein, during cutting, the cutting edge and the sidewall exert sufficient frictional forces on the media to create a deformation in the media near the leading edge of the cutting edge such that a user does not need to cut the media on a supporting substrate.

12. The device of claim 11, wherein the media contact point of the sidewall lies between the leading edge and the trailing edge of the blade.

13. The device of claim 11, wherein the handle, cover, and sidewall are integrally formed.

14. The device of claim 11, wherein when the device is engaged with the media so as to cut it, the media does not contact an inner surface of the cover.

15. The device of claim 11, wherein the blade disposed in the guide such that the leading edge lies proximate to the top surface of the guide and the trailing edge lies proximate to the attached end of the guide.

16. The device of claim 11, wherein the free end of the guide has a substantially rounded geometry or a substantially pointed geometry.

17. The device of claim 11, wherein the guide further comprises a rib extending from the bottom surface or side of the guide.