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:
Aug. 15, 2006
Filed:
Mar. 27, 2002
Motokazu Murakami, Tokyo, JP;
Yoshiyuki Tanno, Tokyo, JP;
Kazuaki Kawasaki, Tokyo, JP;
Akihiro Nagaishi, Tokyo, JP;
Hiroyoshi Suzuki, Tokyo, JP;
Ken-ichi Kitamoto, Tokyo, JP;
Motokazu Murakami, Tokyo, JP;
Yoshiyuki Tanno, Tokyo, JP;
Kazuaki Kawasaki, Tokyo, JP;
Akihiro Nagaishi, Tokyo, JP;
Hiroyoshi Suzuki, Tokyo, JP;
Ken-ichi Kitamoto, Tokyo, JP;
Dowa Mining Co., Ltd., Tokyo, JP;
Abstract
A heating zone (), a cooling zone (), and a quenching zone () are provided inside a linear furnace body in this order, the heating zone (), the cooling zone (), and the quenching zone () being separated by partition doors (). Conveying means of a work (W) is a tray pusher () in the heating zone () and conveying means of the work (W) is roller hearths () in the cooling zone () and the quenching zone (), the roller hearths () being independently driven.