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. 30, 2002
Filed:
Jun. 19, 2000
Ralph Schellen, Krefeld, DE;
Jens Tauchmann, Berlin, DE;
Messer Griesheim GmbH, , DE;
Abstract
The invention relates to a gas distribution system which can be connected to a gas supply, the purpose of said gas distribution system being to admit and distribute a non-oxidizing gas in a shroud ( ) covering at least one solder container ( ). Printed circuit modules ( ) are transported through said shroud and while they are being transported, are brought into contact with a wave of solder ( ). The gas distribution system has at least one gas distributor situated above and at least one gas distributor ( ) situated below the printed circuit modules ( ) in order to produce a protective gas atmosphere with low residual oxygen values. Both gas distributors are provided with flow elements ( to ). Said flow elements produce a displacement gas blanket which is distributed homogeneously over the discharge surfaces ( ) directed towards the solder container.