Bag cutter and piercer
A bag cutter for opening a sealed package using at least one of a blade and a piercer. Preferably, at least one blade is disposed partially within a cutout of an arm in a manner that exposes an edge of the blade. A piercer can comprise an extension of a cutout edge or be located on any other suitable portion of an arm. Another blade can be provided that is substantially perpendicular to the blade within a cutout, and juxtaposable against a cutting surface.
1. A cutting apparatus having an open conformation and a closed conformation, comprising:
a first arm having a first inner surface and an opposable second arm having a second inner surface opposite the first inner surface;
a first blade partially embedded in and extending from a first recess in the first arm;
a cutting surface extending from the second arm;
wherein at least a portion of the first blade is sized and dimensioned to physically contact at least a portion of the cutting surface; and
a piercer having a blunted tip extending outward from the second inner surface, and toward the first inner surface;
wherein the cutting surface comprises (i) a raised portion at least partially enclosing an anvil and (ii) an exposed portion of the anvil extending from the raised portion, wherein the exposed portion of the anvil is curved.
2. The apparatus of claim 1 , wherein the first and second arms are composed of a continuous piece of plastic.
3. The apparatus of claim 1 , wherein the first arm is continuous with the second arm.
4. The apparatus of claim 1 , wherein the cutting surface is curved.
5. The apparatus of claim 1 , wherein the first blade has a long axis parallel or orthogonal to a long axis of the anvil.
6. The apparatus of claim 1 , wherein the anvil comprises a compound convex surface.
7. The apparatus of claim 1 , wherein at least a portion of the first blade comprises steel.
8. The apparatus of claim 1 , wherein at least a portion of the first blade comprises ceramic.
9. The apparatus of claim 1 , wherein the cutting surface comprises a rounded raised portion.
10. The apparatus of claim 1 , wherein the blunted tip is flat.
11. An improved cutting apparatus having a first blade partially embedded in and extending from an upper arm of the apparatus, a raised anvil extending from a lower arm of the apparatus, and a single blunt finger extending from one of the arms toward the other arm wherein the upper surface of the anvil is convex, a first recess of the upper arm proximal to the first blade is concave, and the anvil and the first blade mate when juxtaposed.
12. The cutting apparatus of claim 11 , wherein the upper and lower arms coupled at a pivot.
13. The cutting apparatus of claim 11 , wherein the upper and lower arms coupled at a bend.
14. The cutting apparatus of claim 11 , wherein the first blade extends from an edge of the upper arm.
15. The cutting apparatus of claim 11 , wherein an edge of the upper arm has a first recess, and an exposed portion of the first blade extends from the first recess.
16. The cutting apparatus of claim 15 , further comprising a second blade.
17. The cutting apparatus of claim 16 , wherein the second blade is partially embedded in and extends from a second recess of the upper arm, wherein the first recess is separate from the second recess.
18. The cutting apparatus of claim 11 , wherein the finger is positioned laterally with respect to the anvil.