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. 18, 1998
Filed:
Aug. 28, 1996
Applicant:
Inventors:
Fumitaka Abukawa, Yokohama, JP;
Hitoshi Goi, Yokohama, JP;
Masahiko Watanabe, Yokohama, JP;
Shin Kurasawa, Yokohama, JP;
Hirofumi Kamisugi, Yokohama, JP;
Assignee:
Dowa Mining Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D / ;
U.S. Cl.
CPC ...
266 46 ; 266131 ; 266130 ;
Abstract
In a method for quenching metal parts, a quenching chamber is provided in which the quenching oil is continuously supplied from below the steel parts and circulated upward through the parts in a laminar flow. The circulation is accomplished by feeding the quenching oil onto the bottom of the quenching chamber of an auxiliary chamber surrounding it.