Patent ID: 7121006
Filing Date: 2006-10-17
Classification: B26B

Abstract:
1. An art design knife comprised of a front cover, a rear cover, a hatch, a hatch lock button, a blade transport component, a blade magazine, blades, a push button, a blade lock button, an upper grip cushion, and a lower grip cushion, of which: said front cover is a case member of one piece construction having a semicircular indentation formed in a top of an anterior section thereof and a slide track indentation disposed along an interior of a top of a medial section thereof, said slide track indentation having a plurality of rectangular detent blocks evenly arrayed along a bottom edge of said front cover; an elongated indentation is formed in a top posterior section of said front cover and another elongated indentation is formed at a bottom of a posterior section thereof; the said front cover having an opening formed in a side of said anterior section and pivot holes disposed at each of two upper and lower corners at a front side of said opening; said front cover having a oval-shaped reinforcement plate situated at said medial section; an elongated hole being formed at a center of said reinforcement plate and said reinforcement plate having a post disposed inside a rear edge thereof and a threaded hole being tapped into a center of said post, and a round hole being formed through a trailing end of said front cover, said rear cover being a case member of one-piece construction having a semicircular indentation formed in a top of an anterior section thereof and a slide track indentation disposed along an interior of a top of a medial section thereof, with said slide track indentation having a plurality of rectangular detent blocks arrayed along a bottom edge thereof; an elongated indentation being formed in a top of a posterior section of said rear cover and another elongated indentation being formed at a bottom of a posterior section thereof; said rear cover having an upper level and a lower level abutment plate protruding along an inside of said anterior section of said rear cover, said upper level abutment plate having a notch formed in a forward extremity thereof and said lower level abutment plate having a support element disposed at a lower edge of a front portion said rear cover; said rear cover having a threaded mounting hole situated in a center of said posterior section thereof, and a round hole formed through a trailing end of said rear cover; said hatch being shaped such that it corresponds to a profile of said opening in said front cover and pintles being respectively disposed at each of upper and lower corners at a front side of said hatch; a front of said hatch having an arced depression and a securing slot at an outer edge of a rear side thereof; said hatch having threaded holes tapped into a front and a rear of an interior side thereof and each said threaded hole having a curved mounting groove at an upper and a lower extent thereof; a magazine feed spring mount having a locating plate at a center thereof and a hole being formed in said locating plate; a retaining brace plate being formed by bending upper edges at each of two ends of said magazine feed spring mount and a curved footing element being folded at their left and right sides; a magazine feed spring being of pressure stamped metal construction and consisting of contact elements fabricated by bending down each of two left and right sides thereof and then articulating an outward bend at respective extremities thereof and punch forming a plurality of flat spring elements postured at a downward angle in a center of said magazine feed spring; two magazine feed spring mounts being first inserted into said curved mounting grooves of said hatch and then a screw being placed into each said hole of said magazine feed spring mounts and fastened to said threaded holes of said hatch; said contact elements at two sides of said magazine feed spring each being inserted into and ensconced by said retaining brace plates at an upper extent of said magazine feed spring mounts; said hatch lock button having an oval shape and an arced groove, said hatch lock button having a concavity at one end of an exterior side thereof and a check plate at one end of an interior side of said hatch lock button; said hatch lock button having a raised block disposed in a center of an interior side thereof and a threaded hole being tapped in a center of said raised block; a mounting block consisting of a solid rectangular construct having a threaded hole through one side thereof and a cylindrical recess formed partially through another side with a coil spring being placed into said cylindrical recess; said raised block of said hatch lock button being inserted into said elongated hole at said center of said front cover reinforcement plate, a screw being placed into said treaded hole of said mounting block and fastened to said hatch lock button by means of said threaded hole in said raised block; said blade magazine being a container structure having an upper support member, a rear support member, and a lower support member respectively disposed on three sides; an interior of said blade magazine consisting of a frame plate, a stop tab angled inward at a front edge of said lower support member, and a gap being left between said stop tab and said frame plate for accommodating passage of a single blade therethrough; an elongated opening being formed in said frame plate and a beveled face being formed along a front edge of said elongated opening; said blade transport component consisting of a sliding support plate horizontally situated at an upper anterior section thereof, a vertical plate along an underside of said sliding support plate, with a beveled face on a front edge of said vertical plate, an impelling block extending inwardly from said vertical plate near a center of said sliding support plate, and a lip formed along a rear section at another side of said sliding support plate; said blade transport component having a push button support plate at an upper edge of a rear section thereof, a fastening hole being formed in a center of said push button support plate and said blade transport component further consisting of two positioning tabs extending outwardly from a rear section thereof; said blades being a plurality of orderly stacked individual placed inside said blade magazine; said push button having a protruding post at a bottom aspect thereof inserted and fixed in said fastening hole of said blade transport component; said blade transport component being brought against a top edge of said blade magazine and, simultaneous therewith, said blade transport component and said blade magazine being placed into said abutment plates of said rear cover; said blade lock button being secured into said semicircular indentation in an upper edge of said front cover, said upper grip cushion being a one-piece component constructed of a soft plastic material secured into said elongated indentation formed in said top posterior section of said front cover, said lower grip cushion being a one-piece component constructed of a soft plastic material secured in said elongated indentation formed in said bottom of said posterior section of said front cover and, said pintles of said hatch being movably conjoined to said pivot holes disposed at each of two upper and lower corners at said front side of said opening in said front cover, said hatch being closed over said front cover opening, and said hatch lock button being engaged into said front cover; said front cover and said rear cover being placed together and a screw being inserted through said threaded hole of said front cover and fastened to said threaded mounting hole inside said rear cover, thereby enabling assembly into a complete art design knife structure.