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:
Apr. 20, 1993
Filed:
Mar. 25, 1992
Applicant:
Inventors:
Assignee:
Hitachi Techno Engineering Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ; B23K / ;
U.S. Cl.
CPC ...
228102 ; 228232 ; 228-9 ; 219388 ; 432152 ;
Abstract
In a method and a system in which while carrying objects to be treated to a preheating chamber and a reflow chamber adjacent thereto, hot gases are blown against the objects to be treated by cross flow blowers provided in the preheating chamber and the reflow chamber to melt solder so as to solder electronic parts on a circuit substrate; a free air introducing port is controllably provided in the vicinity of an intake port of the cross flow blower in the preheating chamber, and an exhaust port and an exhaust fan for exhausting gases having an amount corresponding to the free air taken from the free air introducing port, out of the preheating chamber are provided.