Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2005-07-05
2009-02-24
Norris, Jeremy C (Department: 2841)
Metal working
Method of mechanical manufacture
Electrical device making
C174S260000
Reexamination Certificate
active
07493690
ABSTRACT:
In a method of attaching an electronic component to a printed circuit board by a plurality of screws that are inserted into corresponding through holes cut in the board from a surface of the board and then screwed into corresponding screw holes formed in the component mounted on an opposite surface, the component is screwed onto the board using one of the screws and the component and the screw are soldered onto the board with lead-free solder. After they have been cooled down, the component is screwed onto the board using remaining screws. With this, the strength of the connection between the component and board is improved and also the occurrence of warp of the board and component can be prevented.
REFERENCES:
patent: 5500789 (1996-03-01), Miller et al.
patent: 2003/0206392 (2003-11-01), Kawata
patent: 2004/0100777 (2004-05-01), Lee
patent: 60-066069 (1985-05-01), None
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patent: 09-321462 (1997-12-01), None
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Japanese Office Action dated Apr. 1, 2008, Application No. 2004-199118.
Honda Tomoyuki
Ikeba Hiroshi
Muto Shigeru
Ota Takatoshi
Sato Akira
Honda Motor Co. Ltd.
Keihin Corporation
Norris Jeremy C
Westerman, Hattori, Daniels & Adrian , LLP.
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