초록

An LED device for irradiating a curable dental composition utilizes a convergent lens with an optical axis and off-axis positioning of the LEDs to focus the radiation emitted front the LEDs and direct it toward hard to reach locations.

대표청구항 ▼

An LED device for irradiating a curable dental composition utilizes a convergent lens with an optical axis and off-axis positioning of the LEDs to focus the radiation emitted front the LEDs and direct it toward hard to reach locations. be extending into said elongated annular extrusion member, said

An LED device for irradiating a curable dental composition utilizes a convergent lens with an optical axis and off-axis positioning of the LEDs to focus the radiation emitted front the LEDs and direct it toward hard to reach locations. be extending into said elongated annular extrusion member, said filling tube including a tube extension formed thereon substantially at a right angle thereto and located within said extension of said elongated annular extrusion member, said filling tube being attachable to a second manifold of the extruder; an extrusion die formed on said extension of said elongated annular extrusion member; and a cutter member having an opened driveable end, an elongated cutter wall, and an opened cutter end with a cutting surface for cutting extrudate to a desired length as the extrudate exits the die, said cutter member being disposed at least partially over and reciprocally slideable on the extrusion member and operably connectable at the driveable end to a drive device of the extruder for reciprocatably sliding the cutting surface of the cutter member over and away from the extrusion die. 8. The die and cutter assembly according to claim 7, wherein said cutter member includes a housing extending from an outside surface of said elongated cutter wall, said cutting surface being located on said housing in cooperative relationship with said extrusion die. 9. The die and cutter assembly according to claim 8, wherein said cutting surface is formed on a cutting element mounted to said housing, said cutting surface is formed at an angle to a surface of said extrusion die. 10. The die and cutter assembly according to claim 9, wherein said angle is between 25 and 90° with respect to said surface of said housing. 11. The die and cutter assembly according to claim 7, wherein said filling tube includes an entry tube formed on an end of said filling tube opposite said tube extension, said entry tube extending transverse to an axis of said filling tube. 12. The die and cutter assembly according to claim 7, wherein said cutter member is tubular and said elongated cutter wall includes an inside diameter generally the same diameter as an outside diameter of said extrusion wall, said cutter member being slidable on said extrusion wall to reciprocate said cutting surface in cooperation with said extrusion die. 13. The die and cutter assembly according to claim 1, wherein said filling tube includes an upper portion adjacent said opened feed end, said upper portion extending substantially at a right angle to an axis of said elongated annular extrusion member. 14. The die and cutter assembly according to claim 1, wherein said filling tube is always in open communication with said extension of said elongated annular extrusion member. 15. The die and cutter assembly according to claim 7, wherein said filling tube includes an upper portion adjacent said open end of said elongated annular extrusion member, said upper portion extending substantially at a right angle to an axis of said elongated annular extrusion member. 16. The die and cutter assembly according to claim 7, wherein said filling tube is always in open communication with said extension of said elongated annular extrusion member.