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.

Date of Patent:
Jul. 05, 1988

Filed:

Dec. 30, 1985
Applicant:
Inventors:

Hisashi Hattori, Hirakata, JP;

Yoichiro Hanada, Hirakata, JP;

Tatsu Fukuda, Hirakata, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D / ;
U.S. Cl.
CPC ...
266 80 ; 266 81 ; 266 90 ; 266252 ;
Abstract

Fluidized-bed type carburizing furnace means of the class provided with a path for circulation of the furnace gas of a fluidized-bed type carburizing furnace is improved by incorporation therein of ejector means for spouting compressed gas into the circulation path. The circulation path comprises an outlet pipe emanating from the furnace gas outlet of the fluidized-bed type carburizing furnace, a cyclone connected through the medium of the outlet pipe to the fluidized-bed type carburizing furnace, and a discharge pipe emanating from the cyclone and joined to the furnace gas inlet of the fluidized-bed type carburizing furnace. The ejector means comprises a constriction formed in the discharge pipe and a feed pipe for compressed gas having the leading end thereof inserted into the constriction.


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