Replaceable, one piece, hinge-type, slot-engaging pack unit

A pack unit adapted to be replaceably mounted to a support structure having a quasi-cylindrical, key-hole-type, slot-defining means disposed parallel to the longitudinal axis of the support structure, the slot having a generally cylindrical inner portion opening radially outwardly through a restricted neck portion, said pack unit comprising a substantially solid, elongated, headforming and pack reinforcing support element including a generally cylindrical, bulb-like portion having a single, substantially flat, integral fin portion extending radially outwardly therefrom, a first sheet of generally flexible material having one portion looped tightly over said elongated support element so as to conform closely to the contours thereof and second and third portions extending outwardly from said support element, said looped portion having a first section closely overlying said bulb-like portion and second and third sections integrally contiguous with the respective opposite ends of said first section tightly overlying corresponding opposite sides of said fin portion, fastening means for securing the looped portion of said first sheet to said elongated support element to prevent relative sliding movement therebetween and to form a generally cylindrical, flexible material covered, bulbous head and neck portion of said pack unit which is adapted to be telescopically received within said support slot for replaceably mounting said pack unit thereto, said second portion of said first sheet being integrally contiguous with said second section of said looped portion and extending outwardly from said elongated support element in a direction generally parallel to the plane of said fin portion and said third portion of said first sheet being integrally contiguous with said third section of said looped portion and extending outwardly from said elongated support element and being arranged parallel to said second portion, a plurality of flap-like units of finishing material, each flap-like unit having inner and outer portions, said flap-like units being disposed on the outer sides of said second and third portions of said first sheet, with the inner portions of said flap-like units being secured to said second and third portions to sandwich said second and third portions between said plurality of flap-like units and with the outer portions of said flap-like units being adapted to engage a workpiece for finishing same, the ends of said second and third portions of said first sheet being generally coterminus with the outer portions of said flap-like units and also being adapted to engage a workpiece for finishing same.

A pack unit adapted to be replaceably mounted to a support structure having a quasi-cylindrical, key-hole-type, slot-defining means disposed parallel to the longitudinal axis of the support structure, the slot having a generally cylindrical inner portion opening radially outwardly through a restricted neck portion, said pack unit comprising a substantially solid, elongated, head-forming and pack reinforcing support element including a generally cylindrical, bulb-like portion having a single, substantially flat, integral fin portion extending radially outwardly therefrom, a first sheet of generally flexible material having one portion looped tightly over said elongated support element so as to conform closely to the contours thereof and second and third portions extending outwardly from said support element, said looped portion having a first section closely overlying said bulb-like portion and second and third sections integrally contiguous with the respective opposite ends of said fist section tightly overlying corresponding opposite sides of said fin portion, fastening means for securing the looped portion of said first sheet to said elongated support element to prevent relative sliding movement therebetween and to form a generally cylindrical, flexible material covered, bulbous head and neck portion of said pack unit which is adapted to be telescopically received within said support slot for replaceably mounting said pack unit thereto, said second portion of said first sheet being integrally contiguous with said second section of said looped portion and extending outwardly from said elongated support element in a direction generally parallel to the plane of said fin portion and said third portion of said first sheet being integrally contiguous with said third section of said looped portion and extending outwardly from said elongated support element and being arranged parallel to said second portion, a plurality of flap-like units of finishing material which are detachably secured to said second and third portions of said first sheet, said flap-like units being adapted to be secured to said second and third portions by Velcro fastening means which permits same to be easily removed and replaced.

A pack unit adapted to be replaceably mounted to a support structure having a quasi-cylindrical, key-hole-type, slot-defining means disposed parallel to the longitudinal axis of the support structure, the slot having a generally cylindrical inner portion opening radially outwardly through a restricted neck portion, said pack unit comprising a substantially solid, elongated head-forming and pack reinforcing support element made from a resiliently firm yet flexible plastic material, said support element including a generally cylindrical, solid, bulb-like portion having a single, substantially flat, integral, solid fin portion of rectangular configuration extending radially outwardly therefrom, a first sheet of generally flexible material having one portion looped tightly over said elongated support element so as to conform closely to the contours thereof and second and third portions extending outwardly from said support element, said looped portion having a first section closely overlying said bulb-like portion and second and third sections integrally contiguous with the respective opposite ends of said first section tightly overlying corresponding opposite sides of said fin portion, fastening means extending completely through said second and third portions of said first sheet and the fin portion of said support element for securing the looped portion of said first sheet to said elongated support element to prevent relative sliding movement therebetween and forming a generally cylindrical, flexible material covered, bulbous head and neck portion of said pack unit which is adapted to be telescopically received within said support slot for replaceably mounting said pack unit thereto, said second portion of said first sheet being integrally contiguous with said second section of said looped portion and extending outwardly from said elongated support element in a direction generally parallel to the plane of said fin portion and said third portion of said first sheet being integrally contiguous with said third section of said looped portion and extending outwardly from said elongated support element and being arranged parallel to said second portion, a plurality of flap-like units of finishing material, each flap-like unit having inner and outer portions, said flap-like units being disposed on the outer sides of said second and third portions of said first sheet, with the inner portions of said flap-like units being secured to said second and third portions to sandwich said second and third portions between said plurality of flap-like units and with the outer portions of said flap-like units being adapted to engage a workpiece for finishing same.