Metal working – Method of mechanical manufacture – Electrical device making
Patent
1993-04-28
1995-05-23
Echols, P. W.
Metal working
Method of mechanical manufacture
Electrical device making
29860, 29879, 29884, 200257, 200267, 21912164, 228257, H01H 1104
Patent
active
054169690
ABSTRACT:
A sliding contact producing method is provided wherein noble metal balls are easily positioned on a metal plate; the weld strength between the noble metal ball and the metal plate can be obtained sufficiently; and a noble metal mounting jig can be prevented from damage when the metal plate is beam-welded with the noble metal ball. While being received in the recess portions of a jig, the noble metal balls are respectively contacted with bowllike recesses formed in the base surface of the metal plate. YAG laser beam is irradiated on the metal plate to weld the metal plate with the noble metal ball. Then the metal plate is sheared in a determined shape to form resilient strips. The present invention can improve welding operation efficiency and the reliability of welded portions. Since the metal plate being wider than that of the resilient strip receives beam, the metal contact mounting jig can be prevented from damage due to beam welding.
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patent: 4345372 (1982-08-01), Sekigawa et al.
patent: 4642891 (1987-02-01), Weik et al.
patent: 4706383 (1987-11-01), Saffari
Alps Electric Co. ,Ltd.
Bever Patrick T.
Echols P. W.
Shoup Guy W.
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