Media cutting and ribbon curling device

• US 8,006,390 B2
• Filed: 11/17/2006
• Issued: 08/30/2011
• Est. Priority Date: 04/21/2006
• Status: Expired due to Fees

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: 3M Innovative Properties Company (3M Company)
• Inventors: Packard, Joy A., Pearson, Scott D., Mueller, Gerald E.
• Primary Examiner(s): Landrum; Edward F
• Application Number:
  US11/560,901
• Publication Number:
  US 20070249477A1
• Time in Patent Office: 1,747 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, D8/98, D8104-105, D81/07
• US Class Current: 30/294
• CPC Class Codes: A47F 13/04 Twine holders or cutters
• CPC Class Codes: B26B 29/02 Guards or sheaths for knives
• CPC Class Codes: B26B 3/00 Hand knives with fixed blades handles, attaching the handles B25G
• CPC Class Codes: B26B 3/08 specially adapted for cutting cardboard, or wall, floor, or like covering materials
• CPC Class Codes: B26B 5/00 Hand knives with one or more detachable blades
• CPC Class Codes: B26B 5/005 specially adapted for cutting cardboard, or wall, floor or like covering materials
• CPC Class Codes: B26B 9/00 Blades for hand knives

Abstract

A media cutting and ribbon curling device has opposing first and second surfaces bound by two side edges. The device includes a head comprising a cover and a guide disposed underneath the cover, the guide having an attached end and a free end and a blade disposed therein; and an elongated handle extending from the attached end of the guide, the handle comprising a ribbon curling region having (i) first and second ends, the first end disposed proximate to the attached end of the guide and (ii) a curling edge disposed on at least one of the first and second surfaces of the device, the ribbon curling region being tapered at its second end.

Claims

1. A media cutting and ribbon curling device having opposing first and second surfaces bound by first and second opposing side edges, the device comprising:

a head comprising a cover and a guide disposed substantially underneath the cover, the guide having an attached end and a free end and a blade disposed therein; and

an elongated handle extending from the attached end of the guide, the handle comprising a ribbon curling region having (i) first and second ends, the first end disposed proximate to the attached end of the guide and (ii) a curling edge disposed immediately adjacent to the first side edge of at least one of the first and second surfaces of the device, the ribbon curling region being tapered at its second end such that the distance separating the curling edge and the opposing second side edge at its second end is less than the distance separating the curling edge and the opposing second side edge at its first end, wherein the curling edge comprises a rail that extends from the device, the rail having a base and a highest point, the base being disposed on the device and the highest point being furthest away from the device and having a radius of curvature greater than about 0.025 mm and less than about 0.51 mm.

2. The device of claim 1, wherein the curling edge of the ribbon curling region is formed by a juncture of the first side edge and one of the first and second surfaces.

3. The device of claim 2, wherein the juncture is about a 90°

angle.

4. The device of claim 1, wherein the ribbon curling region further comprises a land next to the curling edge.

5. The device of claim 4, wherein the rail has a minimum height of greater than about 0.25 mm and a maximum height of less than about 5 mm, the height being measured perpendicular to the land and the highest point on the rail.

6. The device of claim 1, wherein the rail has a substantially triangular cross-section having a base disposed on the surface of the device, two exposed sides, and a tip that extends from the base.

7. The device of claim 6, wherein two tangent lines, one for each of the exposed sides and passing through the tip, intersect at an angle less than about 90°

.

8. The device of claim 6, wherein two tangent lines, one for each of the exposed sides and passing through the tip, intersect at an angle less than about 60°

.

9. The device of claim 1, wherein the curling edge is formed from a wear resistant material selected from the group consisting of plastic, metal, and ceramic.

10. The device of claim 9, wherein the plastic is selected from the group consisting of polycarbonate, polystyrene, acrylonitrile-butadiene-styrene copolymer, and acetal.

11. The device of claim 1, wherein the ribbon curling region is formed integrally with the handle.

12. The device of claim 1, wherein the ribbon curling region is formed separately from the handle and attached to the handle using mechanical and or adhesive attachment means.

13. The device of claim 1, wherein at least one of the head and the handle is formed from a first polymeric material and wherein at least one of the first and second surfaces of the handle include a second polymeric material having a characteristic selected from the group consisting of a lower durometer than the first polymeric material, a different color than the first polymeric material, and a combination thereof.

14. The device of claim 1, wherein the curling edge is disposed on the second surface of the device, and wherein an angle θ

is formed between (i) a first plane that encompasses the curling edge and is substantially coplanar with the second surface of the device in the ribbon curling region and (ii) a second plane encompassing first and second resting points on the second surface of the device when it is placed on a substantially planar surface, the angle θ

being greater than about 5° and

less than 80°

.

15. The device of claim 14 wherein the angle θ

is about 10°

.

16. The device of claim 1, wherein the handle includes curvature such that when the device is placed on a substantially planar surface, the device rests on two resting points located on its second surface, a first resting point at a rear of the handle and a second resting point proximate to the ribbon curling region.

18. A method of curling a ribbon comprising the steps of:

providing a length of ribbon;

providing the media cutting and ribbon curling device of claim 1;

placing the ribbon against the curling edge;

placing a thumb across the curling edge on the device pushing the ribbon against the curling edge; and

pulling the length of the ribbon through while maintaining the ribbon against the curling edge.

17. A media cutting and ribbon curling device having opposing first and second surfaces bound by two opposing side edges, the device comprising:

a head comprising a cover and a guide disposed substantially underneath the cover, wherein the guide has an attached end and a free end and a blade disposed therein and wherein the second surface of the device is on the same side as the guide; and

an elongated handle extending from the attached end of the guide, the handle comprising a ribbon curling region having (i) first and second ends, the first end disposed proximate to the attached end of the guide and (ii) two curling edges disposed on the second surface of the device, wherein the curling edges are formed from substantially triangular cross-section rails, each rail having a base disposed on the second surface of the device and a tip extending from the base and wherein the tip has a radius of curvature greater than about 0.025 mm and less than about 0.51 mm and the ribbon curling region is tapered at its second end such that the distance separating the two curling edges at the second end is less than the distance separating the two curling edges at the first end.