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US 3,982,888 AGranted
Heat treatment tunnel kiln for products having a circular cross-section
AssigneeCeraver
InventorsJean Moussou, Robert Calvet
Life of this patent
Estimating the term…
Abstract
Heat treatment tunnel kiln for products having a circular cross-section, comprising a main heat treatment zone for circulating tubes or bars perpendicular to their axis, ensuring the rolling of the tubes or bars inside the supports, and zones for circulating the supports parallel to their axis, connected to flow circuits for gases different from those in the main zone.
Claims11
A tunnel kiln comprising:
- a. a plurality of cylindrical supports, each of which contains at least one cavity shaped to receive an object to be heat treated;
- b. means defining a main treating zone;
- c. means in said main treating zone for moving said cylindrical supports in a direction perpendicular to their longitudinal axes;
- d. means in said main treating zone for rotating said cylindrical support about their longitudinal axes during their translational movement in said main treating zone;
- e. means defining a second treating zone;
- f. means in said second treating zone for moving said cylindrical support in a direction parallel to their longitudinal axes;
- g. a first chamber connecting said main treating zone to said second treating zone, said first chamber being adapted to receive at least one of said cylindrical supports at a time;
- and
- h. means for isolating said first chamber in a gas-tight manner from either said main treating zone or said second treating zone.
6 more elements
Dependencies are inferred from the claim text.