Cutter Blade Dispenser and Disposer With Slide Biasing Means and Side Located Dispensing Slot

The present invention relates to cutter and more particularly to a cutter blade dispenser and disposer with slide biasing means and side located dispensing slot for safer storage of cutter blades as well as more convenient of loading and disposing cutter blades.

Typical heavy-duty cutter has double sides of blades in trapezium shape, which is different from the type that the blades are connected to one another, if the one in the front is not sharp any more, user can change to a new one by breaking the old one off from the long connected row of blades. The typical one usually comes in a package with a certain number of blades, user then stores a pile of blades in cartridge of cutter ready for use. As shown in FIG. 9, which mainly consists a body 10 and an upper cover 14. The body 10 is a flat block with a hanging hole 11, each of its two sides has a rail 12 to fit in a griping block 142 of the upper cover 14. Each of two parallel sliding slits 13 on the body 10 is for a tenon 161 of a sliding block 16 to indent and slide through. The body 10 also has parallel trough pattern 141 for positioning of blades 17. Each end of the upper cover 14 has a anti-direction sliding hole 18 and 191, the sliding hole 191 has a slit opening 19 for sliding out the blade 17. The sliding hole 18 also has a slit opening (which is not shown in the figure) for storage of used blades. Accordingly, one end is for new blades to slide out for usage and another end is for storage of used blades. The sliding block 16 separates the new blades from the used ones. When more used blades are stored through the sliding hole 18 and pushes the sliding block 16 towards the sliding hole 191, thus forces a new blade slide out from the slit opening 19 for usage. Another way is to push the sliding block 16 towards the sliding hole 191 by hand to force the blade 17 to line up with the slit opening 19, then slide the blade 17 out from the slit opening 19 by pushing from the sliding hole 191 with finger.

Usually, users will dispose used blades instead of putting them back to cartridge, therefore the most common way of sliding out the blade 17 is mainly by pushing the sliding block 16 which sometimes could get stuck and not very smooth.

Furthermore, it is not convenient to take the upper cover 14 apart from the body 10. The blades that are stored in cartridge could easily be messed up when try to put the upper cover 14 back, thus it is a hassle for users to have to arrange the blades in order again. Even though the blades are smooth on surface, it is still difficult to slide out for usage because of the pressure against the upper cover 14. Users could easily get hurt if not handle with care. Another drawback is that users sometimes can not tell which are used ones or new ones.

The present invention has a main objective to provide a cutter blade dispenser and disposer with slide biasing means and side located dispensing slot for users to easily and conveniently store blades in decently and orderly, also to provide a flat sliding board, which can be slide out by elasticity of a sliding block for storage of single or packaged blades. It is not only convenient, but is also a safer mechanism for storage and disposal of blades.

The present invention will become more fully understood by reference to the following detailed description thereof when read in conjunction with the attached drawings.

FIG. 1 is an exploded perspective view of the present invention,

FIG. 2 is a perspective view of the present invention,

FIG. 3 is a sectional view of FIG. 2 when being dissected at plane 3--3,

FIG. 4 is a sectional view the present invention when the pressing block of the sliding block is away from the positioning hole and pushes the blade,

FIG. 5 is a sectional view of the present invention when the pushing piece pushes the blade out from the slit opening,

FIG. 6 is a side plane view of the present invention when the pushing piece pushes the blade,

FIG. 7 is a sectional view of the present invention when the sliding block is pushed inside the body before assembly of the side compartment,

FIG. 8 is a sectional view of the present invention when the storage board is in a ready-to-load blades position after the sliding block returns to its original position, and

FIG. 9 is a perspective view of a typical cutter with a blade cartridge.

With reference to FIGS. 1, 2 and 4, the present invention of a structurally improved cutter cartridge generally comprises a body 20, a sliding block 30 and a side compartment 40. The body 20 is a case with a trapezium space for storage of blades 50, its trapezium space is defined by a closed end 23 at one end and an opening 24 at another end. A pillar 231 is disposed on the closed end 23 pointing towards the opening 24, the pillar 231 is for an elastic element 27 to sleeve on. The body 20 has a hanging hole 21 at one end and an elongate slit rail 22 on its top plane. An elastic block 26 is disposed on top of the opening 24, the elastic block 26 has a slit 261 on its each side to provide elasticity for the elastic block 26 to return to its original position. The sliding block 30 is a hollow trapezium with a hollow positioning pillar 32 on one end and a hole 31 on the other end. The hollow positioning pillar 32 can sleeve on the pillar 231 of the body 20, while the elastic element 27 is enclosed inside the hollow positioning pillar 32 and pressed against the hole 31. An inclined piece 34 with a slit 341 on its each side is disposed on top of the sliding block 30. The inclined piece 34 has a pressing block 33 on its top for sliding into the slit rail 22 of the body 20. The sliding block 30 has a concave surface 301 on its bottom. The side compartment 40 has a closed end and an opened end, it is just a little bigger than the opening 24 of the body 20 to sleeve on it. A locking hole 41 is disposed on top of the side compartment 40 for inserting the elastic block 26 of the body 20, so that the side compartment 40 is locked together with the body 20 on its one end. A sliding hole 43 on the same line through an elongate slit 44 is disposed on the closed end of the side compartment 40, the elongate slit 44 is wider than the sliding hole 43. Protection bars 45 are disposed on top and under the elongate slit 44 respectively, the lower side of the top protection bar 45 and the upper side of the bottom protection bar 45 each has a trough 451, two cushioning bars 47 are disposed inside the side compartment 40 (as shown in FIG. 4). A blade slit opening 42 is disposed at one corner side of the side compartment 40. A pushing piece 46 is inserted in between the troughs 451 of the protection bars 45, two arrow-shaped tenons 462 are disposed on the inner side of the pushing piece 46 for inserting into the sliding hole 43 so that the pushing piece 46 can be slide inside the sliding hole 43. When the pushing piece 46 is inside the elongate slit 44, it can slide in between the troughs 451. An inclined side piece 461 is extended from one end of the pushing piece 46, its inclined angle degree is the same as the one of a blade 50 for closer and firmer contact as well as more stable sliding and pushing. A strengthen rib 463 is disposed between the side piece 461 and the pushing piece 46. The pushing piece 46 also has a gripping piece 465 on the opposite end to the side piece 461, another strengthen rib 464 is just by the gripping piece 465 for strengthen purpose. A storage board 35 can be placed between the inner bottom of the body 20 and the sliding block 30. The storage board 35 has protrusion bar 351 on each side. An indentation 352 is disposed on the protrusion bar 351 in correspondent to the blade slit opening 42 of the side compartment 40 so that the blade 50 can be slide out the blade slit opening 42 through the indentation 352. Two protruded pieces 353 are disposed on the upper side at one end of the storage board 35 so that the storage board 35 can be stopped by the concave surface 301 of the sliding block 30.

Accordingly and as shown in FIG. 5, first put the elastic element 27 inside the hollow positioning pillar 32 of the sliding block 30, then insert the storage board 35 on top of the inner bottom of the body 20, next place the sliding block 30 inside the body 20 all the way to the closed end 23, the elastic element 27 can sleeve on the pillar 231 of the body 20. As shown in FIGS. 7 and 8, if want to place blades 50, first push the sliding block 30 inside the body 20 and it will bounces back out because of the elasticity provided by the elastic element 27, thus the storage board 35 is pushed outside the opening 24 of the body 20 because of the abrasion between the storage board 35 and the sliding block 30, the storage board 35 can then be pulled out manually to desire protruded length. Meanwhile, the storage board 35 can also be stopped when the protruded pieces 353 meet the concave surface 301 of the sliding block 30. Then the blades 50 can be placed on the storage board 35 and are defined by the protrusion bars 351 decently and orderly. Finally, sleeve the side compartment 40 on the opening 24 of the body 20 in such a way that the locking hole 41 is locked together with the elastic block 26. What happens inside is that the side compartment 40 and the blades 50 pushes the sliding block 30 to a certain distance, then the sliding block 30 bounces back out against the blades 50 because of the elasticity provided by the elastic element 27. The amount of the blades 50 in storage can also be easily seen through the elongate slit rail 22.

Referring to FIGS. 3 and 5, when the blades 50 are pushed by the sliding block 30, the blades 50 are stopped by the cushioning bars 47 inside the side compartment 40 (as shown in FIG. 4), so that only a little part of the front inner side of the side piece 461 of the pushing piece 46 touches a single blade 50, then push the gripping piece 465 manually to slide the side piece 461 from the elongate slit 44 to the sliding hole 43. Lastly, push a blade 50 out through the blade slit opening 42 by using the side piece 461, the pushing piece 46 can also be pushed back for disposal of another blade 50 later when needed.

The present invention can install or dispose a single or a whole package of blades 50 conveniently, smoothly, quickly and safely, can also ensure that only a single blade 50 is slide out through the blade slit opening 42, free from the drawbacks of getting stuck or few blades come out all together. The storage board 35 can be easily slide out by the abrasion between itself and the sliding block 30 when the latter one is pushed back out by the elasticity provided by the elastic element 27. The mechanism is just as simple and easy as like a drawer for storing or disposing the blades 50 and keeping them in decency and order.

The specification relating to the above embodiment should be construed as exemplary rather than as limitative of the present invention, with many variations and modifications being readily attainable by a person of average skill in the art without departing from the spirit or scope thereof as defined by the appended claims and their legal equivalents.