Welding tip for arc welding and arc welding apparatus

Electric heating – Metal heating – By arc

Reexamination Certificate

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Details

C219S137620

Reexamination Certificate

active

06943318

ABSTRACT:
A contact provided in a welding tip of an arc welding apparatus includes a tip body adapted to be mounted to a welding torch body and a tip end member formed integrally therewith. The tip end member is divided into two parts, i.e., first and second halves by means of a slit formed along the axis of the tip end member, and the first half having the predetermined rigidity is movable around a connection between itself and the tip body. A spring member fitted on the tip end member applies a spring force thereto, whereby the contact has improved durability.

REFERENCES:
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patent: 2765310 (1956-10-01), Horrobin
patent: 2768280 (1956-10-01), Renandie
patent: 3283121 (1966-11-01), Bernard et al.
patent: 3502841 (1970-03-01), Heer
patent: 3878354 (1975-04-01), Frantzreb, Sr.
patent: 421 340 (1966-09-01), None
Patent Abstracts of Japan, vol. 018, No. 023, (M-1541), Jan. 14, 1994 and JP 05-261551 A (Kobe Steel Co.), Oct. 12, 1993—Abstract only.
Patent Abstracts of Japan, vol. 1995, No. 07, Aug. 31, 1995 and JP 07-100653 A (Nagamine Seisakusho KK), Apr. 18, 1995—Abstract only.
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Patent Abstracts of Japan, vol. 1997, No. 08, Aug. 29, 1997 and JP 09-094667 A (Yaskawa Electronic Corp.), Apr. 8, 1997—Abstract only.
Patent Abstracts of Japan, vol. 2000, No. 22, Mar. 9, 2001 and JP 2001-121265 A (Daido Steel Co. Ltd.), May 8, 2001—Abstract only.

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