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Patent Searching and Data


Title:
HEAT TREATMENT FURNACE
Document Type and Number:
WIPO Patent Application WO/2003/068997
Kind Code:
A1
Abstract:
A heat treatment furnace, wherein a heating zone (4), a cooling zone (5), and a quenching zone (6) are provided in order inside a linear furnace body through partition doors (2, 3), a tray pusher (7) is used as a work (W) feed means in the heating zone (4), and independently driven roller hearths (8, 9) are used as the work (W) feed means in the cooling zone (5) and the quenching zone (6).

Inventors:
Murakami, Motokazu c/o Dowa Mining Co. Ltd. (8-2, Marunouchi 1-chom, Chiyoda-ku Tokyo, 100-8282, JP)
Tanno, Yoshiyuki c/o Dowa Mining Co. Ltd. (8-2, Marunouchi 1-chom, Chiyoda-ku Tokyo, 100-8282, JP)
Kawasaki, Kazuaki c/o Dowa Mining Co. Ltd. (8-2, Marunouchi 1-chom, Chiyoda-ku Tokyo, 100-8282, JP)
Nagaishi, Akihiro c/o Dowa Mining Co. Ltd. (8-2, Marunouchi 1-chom, Chiyoda-ku Tokyo, 100-8282, JP)
Suzuki, Hiroyoshi c/o Dowa Mining Co. Ltd. (8-2, Marunouchi 1-chom, Chiyoda-ku Tokyo, 100-8282, JP)
Kitamoto, Ken-ichi c/o Dowa Mining Co. Ltd. (8-2, Marunouchi 1-chom, Chiyoda-ku Tokyo, 100-8282, JP)
Application Number:
PCT/JP2002/002977
Publication Date:
August 21, 2003
Filing Date:
March 27, 2002
Export Citation:
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Assignee:
DOWA MINING CO., LTD. (8-2 Marunouchi 1-chome, Chiyoda-ku, Tokyo, 100-8282, JP)
Murakami, Motokazu c/o Dowa Mining Co. Ltd. (8-2, Marunouchi 1-chom, Chiyoda-ku Tokyo, 100-8282, JP)
Tanno, Yoshiyuki c/o Dowa Mining Co. Ltd. (8-2, Marunouchi 1-chom, Chiyoda-ku Tokyo, 100-8282, JP)
Kawasaki, Kazuaki c/o Dowa Mining Co. Ltd. (8-2, Marunouchi 1-chom, Chiyoda-ku Tokyo, 100-8282, JP)
Nagaishi, Akihiro c/o Dowa Mining Co. Ltd. (8-2, Marunouchi 1-chom, Chiyoda-ku Tokyo, 100-8282, JP)
Suzuki, Hiroyoshi c/o Dowa Mining Co. Ltd. (8-2, Marunouchi 1-chom, Chiyoda-ku Tokyo, 100-8282, JP)
Kitamoto, Ken-ichi c/o Dowa Mining Co. Ltd. (8-2, Marunouchi 1-chom, Chiyoda-ku Tokyo, 100-8282, JP)
International Classes:
C21D1/00; C21D9/00; F27B9/02; F27B9/04; F27B9/20; F27B9/22; F27B9/24; F27B9/26; F27B9/30; F27D1/00; (IPC1-7): C21D1/00; F27B1/00; F27B9/24; F27B9/26
Foreign References:
JPH03281771A
JPS6116912B2
JPH06330153A
JP2001207253A
Other References:
See also references of EP 1475446A1
None
Attorney, Agent or Firm:
Yamamoto, Shoji (Kakuichi Building 3F, 5-2 Kyobashi 2-chom, Chuo-ku Tokyo, 104-0031, JP)
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