Metal working – Method of mechanical manufacture – Electrical device making
Patent
1993-04-30
1995-04-11
Arbes, Carl J.
Metal working
Method of mechanical manufacture
Electrical device making
29830, 174263, 439 83, H01R 906
Patent
active
054046378
ABSTRACT:
A method of manufacturing a printed wiring board. A printed wiring board having a substrate and a circuit pattern formed thereon is provided. At least one through-hole is formed in the substrate. A plurality of fine wires are inserted into the through-hole, and a molten solder is filled into the through-hole by a capillary action due to small gaps formed between the fine wires. A multilayer printed wiring board may be provided comprising a plurality of wiring board layers each having a substrate and a respective circuit pattern formed thereon. The molten solder filled in the through-hole electrically connects at lest two of the respective circuit patterns. The plurality of fine wires may be disposed in a conductive hollow tubular body which is inserted along with the fine wires into the through-hole. Also, the plurality of fine wires may be arranged as a mesh sheet that is formed into a tubular body and inserted into the through-hole. If an electronic component is to be connected with the printed wiring board through the through-hole, the leads of the electronic component may comprise the plurality of fine wires.
REFERENCES:
patent: 2902629 (1959-09-01), Little et al.
patent: 3159906 (1964-12-01), Telfer
patent: 3184830 (1965-05-01), Lane et al.
patent: 3500538 (1970-03-01), Raciti
IBM Technical Disclosure Bulletin vol. 9 No. 4 Sep. 1966 p. 366 by H. P. Byrnes.
Arbes Carl J.
Nippon CMK Corp.
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