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US 5,496,017 AGranted
Kiln for firing and/or casting prosthodontic products
AssigneePeacock Limited L.C.
InventorAlberto Gagliano
Life of this patent
Estimating the term…
Abstract
The firing and/or casting kiln has a containment casing which internally forms a treatment chamber, a part holder which is movably mounted inside the treatment chamber, an opening for access to the treatment chamber, and a conditioning system for producing a vacuum and introducing inert gas into the treatment chamber.
Claims13
A firing kiln comprising:
- a containment casing which internally forms at least one treatment chamber, said containment casing having thermally insulating walls, said at least one treatment chamber having a firing kiln section and a cooling chamber section;
- at least one part holder movably mounted inside said treatment chamber;
- at least one opening for access to said treatment chamber;
- a door for opening and closing said opening, said part holder being movably supported by an inner portion of said door;
- actuation means for moving said door between an open position and a closed position;
- means for extending and retracting said part holder with respect to said door in order to move said part holder between said firing kiln section and said cooling chamber section;
- and
- conditioning means for producing a vacuum and introducing inert gas into said treatment chamber.
5 more elements
A firing kiln comprising:
- a containment casing internally forming at least one treatment chamber, said containment casing being rotatably supported about a horizontal axis;
- means for tilting said casing about said horizontal axis;
- a vertical partition dividing said treatment chamber into a first and a second compartment, said vertical partition being placed in a plane parallel to said horizontal axis, an opening being provided in said partition;
- a fixed crucible for a metal load provided in said first compartment;
- a casting cylinder provided in said second compartment, said crucible and a casting inlet of said cylinder being placed adjacent to said opening;
- electric arc means for heating said metal load;
- at least one part holder movably mounted inside said second compartment;
- at least one opening for access to the treatment chamber;
- and
- conditioning means for producing a vacuum and introducing inert gas into said treatment chamber, said conditioning means comprising means for aspirating air both from said first compartment and from said second compartment, at least one source for delivering inert gas to said first compartment, and a discharge valve, said discharge valve being a safety valve which is arranged downstream of the casting cylinder within the chamber and is meant to control the pressure of the inert has in the second compartment during casting.
7 more elements
Dependencies are inferred from the claim text.