The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 19, 2005
Filed:
Aug. 31, 2000
Yutaka Suzukawa, Tokyo-to, JP;
Isao Mori, Tokyo-to, JP;
Masayasu Nagoshi, Tokyo-to, JP;
Takeshi Tada, Yokohama, JP;
Jun Sudo, Yokohama, JP;
Yoshiyuki Kasai, Nagoya, JP;
Kazuhiko Umehara, Nagoya, JP;
Yutaka Suzukawa, Tokyo-to, JP;
Isao Mori, Tokyo-to, JP;
Masayasu Nagoshi, Tokyo-to, JP;
Takeshi Tada, Yokohama, JP;
Jun Sudo, Yokohama, JP;
Yoshiyuki Kasai, Nagoya, JP;
Kazuhiko Umehara, Nagoya, JP;
NKK Corporation, Tokyo, JP;
Nippon Furnace Kogyo Kaisha, Ltd., Yokohama, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A heat treatment equipment having a heating chamber having a plurality of regenerative combustors provided with direct-fired burner having a built-in porous regenerator, for applying a heat treatment to an object in the heating chamber, wherein the substantial average surface pore diameter is not uniform for porous regenerators in a plurality of direct-fired burners or a plurality of regenerative combustors. By making contrivances in the shape of porous regenerators of the direct-fired burners or the regenerative heat exchangers arranged in an area where substances causing choking tend to easily adhere to make it difficult for such substances to adhere or prevent choking phenomenon from becoming apparent.