Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Reexamination Certificate
2005-04-26
2005-04-26
Pelham, J. (Department: 3742)
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
C219S411000, C219S413000
Reexamination Certificate
active
06884969
ABSTRACT:
An infrared die oven has a die cradle for holding a die. A thermocouple is positioned within the die cradle to maintain it in direct contact with the die. A controller connected to the thermocouple continually reads the temperature of the die. When the die reaches a threshold temperature, the intensity of an infrared heating elements in the oven is reduced. When the die reaches the desired temperature, the controller continuously adjusts the intensity of the heater to maintain the die at the desired temperature.
REFERENCES:
patent: 1815061 (1931-07-01), Harsch et al.
patent: 4570053 (1986-02-01), Ades et al.
Rapid Infrared Preheating of Extrusion Die, http://www.oit.doe.gov/imf/pdfs/alcoapres.pdf (last visited Nov. 17, 2003).
Visual Management Made Easy with Castool Single Cell Ovens, http://www.castool.com/a_solutions/DieMgmt02.pdf (last visited Nov. 17, 2003).
Single Cell Die Ovens, http://www.castool.com/a_solutions/DieOvens02.pdf (last visited Nov. 17, 2003).
Fielding, Roger A., et al., A Review of Systems for Heating Extrusion Dies, Light Metal Age, 48-59 (Aug. 1998).
Brach Jeffrey D.
Bugai John C.
Granco Clark, Inc.
Pelham J.
Warner & Norcross & Judd LLP
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