B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 45/03 (2006.01) A61C 13/20 (2006.01)
Patent
CA 2071780
ABSTRACT OF THE DISCLOSURE An improved resin denture base molding apparatus for molding denture bases by injecting fused resin R into a denture base plaster mold formed in a flask F, wherein the improvement comprises a table 2 provided in a manner capable of elevating up and down along a plurality of vertical guide rods 1, an elavation driving means 3 for elevating the table 2, an upper support member 6 provided horizontally across each upper end of the guide rods 1 and having a through hole 4, a spring storing section 7 provided at the location of the through hole 4 on the upper surface of the upper support member 6, a push spring 8 stored in the spring storing section 7, a piston rod 10 inserted in the through hole 4 and urged downwardly by the push spring 8 and having a resin pressurizing piston 9 at the lower end thereof, a flask F placed on the table 2 and having a resin filling hole 11 at the top thereof, a cylinder 13 having a resin passage 12 that communicates with with the resin filling hole 11 at the bottom wall thereof and is located below the piston 9 and a pressure breakable member 14 disposed within the cylinder 13 so that it covers the resin passage 12.
Fetherstonhaugh & Co.
High Dental Service Co. Ltd.
LandOfFree
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