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Class Information
Number: 266/252
Name: Metallurgical apparatus > Means treating solid metal > By contact with gas > With heating means
Description: Device wherein means are provided to elevate the temperature of the article being treated.










Sub-classes under this class:

Class Number Class Name Patents
266/253 Bottom feeding furnace 15
266/257 Having atmosphere generating means within treating zone 42
266/255 Having work contained in separate, noncommunicating chamber, e.g., muffle 30
266/254 With indirect heat-exchange means for gas 29


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8617461 Continuous gas carburizing furnace Dec. 31, 2013
8580052 Method for the heat treatment of castings using an air quench and system for implementing the method Nov. 12, 2013
8496872 High temperature nitriding of titanium parts Jul. 30, 2013
8444912 Heat treatment furnace May. 21, 2013
8298475 High temperature and economizing furnace system Oct. 30, 2012
8293167 Surface treatment of metallic articles in an atmospheric furnace Oct. 23, 2012
8262387 Atmosphere heat treatment apparatus and method of operating the same Sep. 11, 2012
8246901 Retort furnace for heat treating metal workpieces Aug. 21, 2012
8202471 Furnace configured for use in both the galvannealing and galvanizing of a metal strip Jun. 19, 2012
8109283 Apparatus and process for the dry removal of the scale found on the surface of the metal products Feb. 7, 2012
8101120 Method for the heat treatment of a profile, device for the heat treatment of a profile and profile Jan. 24, 2012
8088328 Vacuum nitriding furnace Jan. 3, 2012
8075836 Steel-sheet continuous annealing equipment and method for operating steel-sheet continuous annealing equipment Dec. 13, 2011
8025835 Furnace configured for use in both the galvannealing and galvanizing of a metal strip Sep. 27, 2011
8021598 Rapid thermal treatment for enhancing bending stiffness and yield moment of curved needles Sep. 20, 2011
7967920 Method and measurement system for the control of an active charge surface in the low pressure carburizing process Jun. 28, 2011
7931854 Unit for catalytic gas nitrogenation of steels and alloys Apr. 26, 2011
7887746 Rapid thermal treatment for coloring surgical needles Feb. 15, 2011
7842230 Continuous carburizing furnace Nov. 30, 2010
7833471 Carburizing apparatus and carburizing method Nov. 16, 2010
7811510 Continuous carburizing furnace Oct. 12, 2010
7722801 Vacuum carburizing apparatus May. 25, 2010
7678326 Method and apparatus for manufacturing fine particles Mar. 16, 2010
7588719 Installation for the heat-treatment of parts Sep. 15, 2009
7540992 Method for controlling the homogeneity of the temperature of products in a metallurgical reheating furnace, and reheating furnace Jun. 2, 2009
7531769 Carbon fiber composite muffle May. 12, 2009
7520746 Annealing furnace cooling and purging system and method Apr. 21, 2009
7514035 Versatile high velocity integral vacuum furnace Apr. 7, 2009
7507368 Hot air circulation furnace Mar. 24, 2009
7485255 Self-annealing enclosure Feb. 3, 2009
7438119 System for heat treating castings and reclaiming sand Oct. 21, 2008
7435375 Annealing furnace purging and oxidation system and method Oct. 14, 2008
7427375 Diffuser for an annealing furnace Sep. 23, 2008
7425298 Thermal deburring machine Sep. 16, 2008
7384595 Heat-treating apparatus and heat-treating method Jun. 10, 2008
7361299 Hydrogen closed-cycle hardening unit Apr. 22, 2008
7338629 Integrated metal processing facility Mar. 4, 2008
7276204 Carburization treatment method and carburization treatment apparatus Oct. 2, 2007
7267793 Furnace for vacuum carburizing with unsaturated aromatic hydrocarbons Sep. 11, 2007
7264768 Single substrate annealing of magnetoresistive structure Sep. 4, 2007
7204952 Vacuum furnace for carburizing with hydrocarbons Apr. 17, 2007
7204894 Annealing of hot rolled steel coils with clam shell furnace Apr. 17, 2007
7029625 Continuous vacuum carburizing furnace Apr. 18, 2006
7018584 Method and apparatus for metal processing Mar. 28, 2006
7018485 Apparatus for subjecting rare earth alloy to hydrogenation process and method for producing rare earth sintered magnet using the apparatus Mar. 28, 2006
7005104 Power module for an autoclave Feb. 28, 2006
6960318 High temperature/high pressure vessel Nov. 1, 2005
6949722 Method and apparatus for active temperature control of susceptors Sep. 27, 2005
6910522 Methods and apparatus for heat treatment and sand removal for castings Jun. 28, 2005
6902635 Multi-cell thermal processing unit Jun. 7, 2005

1 2 3 4 5










 
 
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