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:
Jun. 19, 1990
Filed:
May. 31, 1989
Applicant:
Inventor:
Hirokazu Akamatsu, Yokkaichi, JP;
Assignee:
Ryoka Techono Engineering & Construction Co., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F28D / ; B29F / ;
U.S. Cl.
CPC ...
432 59 ; 432 11 ; 165 89 ; 425373 ;
Abstract
A rotating-drum heat treatment apparatus for carrying out cooling or heating of a material to a desired temperature. The apparatus includes two drums arranged in a casing adjacent to each other for continuously cooling or heating the material to be heat-treated, to thereby increase a time required for the heat treatment of the material.