Patent ID: 6142355
Filing Date: 2000-11-07
Classification: B25C

Abstract:
A stapler comprising:a top shell having front and rear ends, said front end being provided with a downwardly extending urging plate;a slotting seat having an open slot corresponding to a bottom of said top shell;a bottom seat mounted under said slotting seat and pivotally connected to the slotting seat and the top shell;a sliding seat having a pair of lateral protrusions, one protrusion being mounted on each lateral side thereof, said sliding seat being slidably disposed within the slotting seat, a front edge of said sliding seat being provided with a pair of lateral boards to urge a unit of staples toward a front end of the slotting seat;a cartridge having a central raised ridge along a longitudinal axis thereof and a hollow channel formed beneath a bottom surface of the central ridge, said cartridge being slidably mounted within the slotting seat with the sliding seat disposed in front of the cartridge;first and second lateral grooves, said first lateral groove being provided in one lateral wall of the slotting seat and said second lateral groove being provided in the other lateral wall of the slotting seat, wherein one of the lateral protrusions of the sliding seat is movably disposed within the first lateral groove and the other lateral protrusion is movably disposed within the second lateral groove, each of said lateral grooves having an upwardly curved stop end, wherein when the sliding seat is moved to the rear of the slotting seat and the lateral protrusions are disposed in the stop ends, a gap is formed between the sliding seat and the slotting seat open slot;a first spring, one end of which is fitted to a first hook provided at the front end of the slotting seat, and the other end of which is connected to the front end of the sliding seat to urge the sliding seat and staples toward the front end of the slotting seat; anda second spring, one end of which is connected to a rear end of the cartridge, and the other end of which is secured to a hook at a rear end of the sliding seat, wherein when the cartridge is moved backward to stop the sliding seat at said stop ends, multiple units of staples can be loaded onto the cartridge and through said gap, said staple units being further loaded into the slotting seat when the cartridge is moved forward to release the sliding seat from the stop ends.