Patent ID: 6863204

Claim:
A cartridge for a hammer-type stapler comprising: a pair of substantially congruent staple containers, consisting essentially of an upper staple container and a lower staple container, each of said substantially congruent staple containers formed with an upper top surface and a lower top surface respectively and contiguously positioned in symmetric opposition to each other; and, a staple pusher mounted therein; wherein each of said pair of substantially congruent staple container comprises: a pair of parallel tracks fixedly mounted on and protruding from an inner aspect of said upper and lower top surfaces and thus defining therethrough an E-shaped groove; a plurality of staples loaded onto said pair of parallel tracks on which the staple pusher is mounted for biasing and advancing said staples toward a staple-outlet end of the staple container, said staple pusher including a shell with a staple-shaped cross-sectional profile and a block fixedly mounted on an internal bottom surface of said shell; a sealer formed on an end opposite said staple-outlet end for preventing the staple pusher from moving past the staple-outlet end exterior the staple cartridge; a staple-outlet formed at said staple-outlet end; a steel pad mounted on said staple-outlet; wherein said block is aligned with said steel pad so as to prevent said staple pusher from projecting exterior to said staple-outlet, and, a metal covering pivotally mounted on said staple-outlet end to prevent any of said plurality of staples from slipping out of the cartridge when the metal covering is in a closed position, wherein the metal covering comprises: a pair of lateral surfaces joined at right angles to a respective side distal portion of the metal covering, whereby the distance between said pair of lateral surfaces is adapted to accommodate a plurality of staples of a specific width chosen from the group of pre-determined staple widths; a front hood formed between said two lateral surfaces an upper opening formed above the front hood so as to accommodate said staple-outlet end of the staple-container and permit a driving element of said hammer-type stapler to be guided up and down to forcibly eject said plurality of staples one at a time; and, a pair of protruding ears formed respectively on said lateral surfaces to facilitate pivotally moving said metal covering.