Bag cutter and piercer

Abstract

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.

Claims

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.

Description

BRIEF DESCRIPTION OF THE DRAWING

(1) FIG. 1 is a top view of an arm of an open bag cutter having a piercer.

(2) FIG. 2 is a front view of one embodiment of a bag cutter having a piercer, a blade, and an anvil.

(3) FIG. 3 is a front view of a different embodiment of a bag cutter.

(4) FIG. 4 is a side, rear perspective view of yet another embodiment of a bag cutter.

(5) FIG. 5 is a top perspective view of another bag cutter.

(6) FIG. 6 is a side, rear perspective view of an embodiment of a bag cutter having three blades.

(7) FIG. 7 is a side, rear perspective view of an embodiment of another bag cutter having three blades.

(8) FIG. 8 is a front perspective view of the bag cutter of FIG. 7.

DETAILED DESCRIPTION

(9) The following discussion provides many example embodiments of the inventive subject matter. Although each embodiment represents a single combination of inventive elements, the inventive subject matter is considered to include all possible combinations of the disclosed elements. Thus if one embodiment comprises elements A, B, and C, and a second embodiment comprises elements B and D, then the inventive subject matter is also considered to include other remaining combinations of A, B, C, or D, even if not explicitly disclosed.

(10) Groupings of alternative elements or embodiments of the invention disclosed herein are not to be construed as limitations. Each group member can be referred to and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in, or deleted from, a group for reasons of convenience and/or patentability. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified thus fulfilling the written description of all Markush groups used in the appended claims.

(11) FIG. 1 shows a bag cutter having a piercer and two cutouts sharing a blade. Cutting and piercing apparatus 100 comprises a first arm 110 having first and second cutouts (120 and 130, respectively) that share first blade 140. First blade 140 is partially embedded between a first and second side (170 and 180, respectively) of arm 110, and is partially exposed via first cutout 120 and second cutout 130.

(12) As used in the description herein and throughout the claims that follow, the meaning of a, an, and the includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of in includes in and on unless the context clearly dictates otherwise.

(13) Apparatus 100 further comprises a first piercer 150, and second piercer 155 having piercer tip 160 that composes a periphery of first arm 110. Piercers 150 and 155 are made of a single piece of plastic, and attached to second side 180 of first arm 110 such that there is an overlap between first cutout 120 and first piercer 150, and between second cutout 130 and second piercer 155. This configuration is designed to allow a user to pierce and cut a work-piece (e.g., a bag, a sheet, etc.) with one swipe of the hand.

(14) First and second piercers can comprise a single piece of material (as shown in FIG. 1), or comprise two or more pieces of material. It is also contemplated that an apparatus can have three of more piercers, made of one or more pieces of material. Contemplated piercer materials include, among other things, a plastic, a silicon, a metal, or any combination thereof.

(15) FIG. 2 shows a bag cutter having a cutout, anvil and piercer. Apparatus 200 comprises a first arm 210 having first cutout 230, first blade 240 partially embedded therein, and second blade 250. Second arm 220 is continuous with first arm 210 and comprises a first piercer 260, and a cutting surface (first anvil 270 or raised portion 280) configured to juxtapose an edge 251 of second blade 250. First anvil 270 acts as a cutting surface where it extends through a raised portion 280. If anvil 270 wears down (or if anvil was completely embedded within second arm 220), raised portion 280 can become the cutting surface.

(16) Piercer 260 comprises an obtuse (i.e., blunt) tip for safety and utility purposes. However, it is contemplated that piercer could comprise a tip of any suitable size and shape, including for example, a needlepoint (could come with a hard cover), a semi-blunt point, a rounded blunt point, a flat blunt point, or any other suitable shape.

(17) Second blade 250 is partially embedded in first arm 210 in a manner that exposes an edge of blade 250. Unlike first blade 240, which is disposed between a first and second side of first arm 210, second blade 250 extends beyond at least one of the first and second sides. In other words, while an edge of first blade 240 is within a thickness 211 of first arm 210, an edge of second blade 250 sticks out from first arm 210.

(18) It is contemplated that an arm could have multiple and varying thicknesses. A side of an arm is a surface that comprises one side of all thicknesses thereof. Thus, a side is not always a flat surface. For example, first arm 210 comprises a first thickness 211, and a second thickness 212 (among others). The first side (not shown) is substantially flat, while the second side 213 is substantially flat up to an edge portion, which comprises many curvatures.

(19) Each arm can comprise one or more components. For example, a blade juxtaposable against a raised portion or anvil can be coupled with (e.g., partially embedded in) one material of an arm, such as a hard plastic, that is directly coupled with another material of an arm, such as a soft plastic.

(20) As used herein, and unless the context dictates otherwise, the term coupled to is intended to include both direct coupling (in which two elements that are coupled to each other contact each other) and indirect coupling (in which at least one additional element is located between the two elements). Therefore, the terms coupled to and coupled with are used synonymously.

(21) FIG. 3 shows a bag cutter having a cutout, anvil, and multiple piercers. Unlike the apparatus 200 of FIG. 2, apparatus 300 comprises an anvil 380 that is completely embedded in a raised portion 381 of second arm 320. In such an embodiment, raised portion 381 acts as a cutting surface at least up to a point where raised portion 381 is worn and first anvil 380 is exposed. Where first anvil 380 becomes exposed, it will act as a cutting surface.

(22) First arm 310 comprises a second blade 360 partially embedded therein and exposing a first edge 370. Second arm 320 comprises a first cutout 330 at least partially enclosing first blade 340, and having a first piercer 350. Second arm further comprises second piercer 355 that is distal from each of the first blade 340 and second blade 360.

(23) It is contemplated that any arm can comprise any component of a cutting apparatus in any suitable combination. Thus, anvil(s), cutout(s), blade(s), piercer(s), and any other component can be located on any arm or arms.

(24) FIG. 4 shows a bag cutter having a pivot, two cutouts, and piercers extending from the cutouts. Apparatus 400 comprises a second arm 420 having a blade (not shown), coupled to first arm 410 via a pivot (e.g., a coil, a piece of material, a bend, a magnetic strip, or any other suitable pivot). First arm 410 comprises first and second cutouts (440 and 450, respectively), each of which expose an edge of first blade 460. First arm 410 further comprises first and second piercers (470 and 480, respectively), which are extensions of edges of first and second cutouts. Raised portion 490 is configured to juxtapose an edge of the second arm 420's blade when first arm 410 and second arm 420 are squeezed together.

(25) In some other embodiments, first arm is continuous with second arm via a single piece of shared material.

(26) A hanger accepter (e.g., tab 491) can be located on any portion of any arm or pivot and can be configured to accept a hook or other hanger. It is also contemplated for a bag cutter to have various safety features, including, for example, a locking strap, and a ridge in one or both of the arms to help prevent a user's fingers from sliding off the arm.

(27) FIG. 5 shows apparatus 500 having first cutout 510 and second cutout 520, each partially embedding a different blade. First cutout 510 partially embeds and exposes first blade 515, and second cutout 520 partially embeds and exposes second blade 525. Each blade, 515 and 525, is disposed between first side 530 and second side 531, such that the only way to access either blade is via a cutout.

(28) Blades can be made of any suitable material, including steel, ceramic, and plastic, and can have flat, concave or convex edges. Blades made with one or more non-optimal materials can optionally have suitable coatings, including for example Teflon or other friction-reducing coating, and metal coatings or other corrosion-resistance coatings. Stops can be included to control cutting depth. Each blade is preferably embedded in such a way that at least a portion of an edge of a blade is exposed at all times.

(29) FIG. 6 shows an embodiment of the inventive subject matter having three blades, two cutouts, a cutting surface, and two piercers. Apparatus 600 is a versatile bag cutter and piercer that is configured to allow a user to open different types of bags and other objects. The first arm 610 comprises three different blades, 630, 650, and 660. First blade 630 is partially embedded in first arm 610 and configured so that an edge of first blade 630 can juxtapose cutting surface 680 of second arm 620 when first arm 610 and second arm 620 are squeezed together. Second blade 650 and third blade 660 are each disposed between a first side and a second side of first arm 610. In this embodiment, an edge of second blade 650 is exposed via second cutout 645, and an edge of third blade 660 is exposed via first cutout 640. In some embodiments, it is contemplated that a single blade could comprise two or three edges that can be exposed via two or three different cutouts, respectively.

(30) Apparatus 600 further comprises a first piercer 670 and second piercer 675. A piercer can be used to pierce one side of a bag, so that a bag can be opened on a single side. In other words, a strip of the bag does not need to be removed in order to open a bag. Instead, a user can simply pierce one side of the bag and create a cut using a cutout and corresponding blade edge.

(31) FIG. 7 shows another embodiment of the inventive subject matter. Apparatus 700 is similar to apparatus 600 and comprises three separate blades (710, 720, and 730). First cutout 740 and second cutout 750 expose a portion of second blade 720 and third blade 730, respectively. In this embodiment, second blade 720 and third blade 730 are rectangular in shape. However, it is contemplated that a blade can comprise any suitable size and shape, including for example, a trapezoid, or a triangle.

(32) Apparatus 700 further comprises cutting surface 735, configured to juxtapose an edge of first blade 710 when apparatus 700 is squeezed together. FIG. 8 is a front perspective view of the apparatus of FIG. 7.

(33) The recitation of ranges of values herein is merely intended to serve as a shorthand method of referring individually to each separate value falling within the range. Unless otherwise indicated herein, each individual value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g. such as) provided with respect to certain embodiments herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed. No language in the specification should be construed as indicating any non-claimed element essential to the practice of the invention.

(34) It should be apparent to those skilled in the art that many more modifications besides those already described are possible without departing from the inventive concepts herein. The inventive subject matter, therefore, is not to be restricted except in the scope of the appended claims. Moreover, in interpreting both the specification and the claims, all terms should be interpreted in the broadest possible manner consistent with the context. In particular, the terms comprises and comprising should be interpreted as referring to elements, components, or steps in a non-exclusive manner, indicating that the referenced elements, components, or steps may be present, or utilized, or combined with other elements, components, or steps that are not expressly referenced. Where the specification claims refers to at least one of something selected from the group consisting of A, B, C . . . and N, the text should be interpreted as requiring only one element from the group, not A plus N, or B plus N, etc.