Electric heating – Metal heating – By arc
Patent
1989-12-08
1991-03-19
Albritton, C. L.
Electric heating
Metal heating
By arc
21912164, 21912182, 21912177, 21912184, B23K 5600
Patent
active
050013238
ABSTRACT:
In a surgical needle, marks of welding are left as they are on a welded portion between needle and pipe members so that the welded portion has a surface distinguishable from peripheral surfaces of the respective needle and pipe members. The welded portion may be composed of a plurality of peripherally spaced welded parts. In a manufacturing method of the surgical needle, a beam energy is applied from a beam energy emitting arrangement, toward an abutting line between the needle and pipe members, from a direction substantially perpendicular to the needle and pipe members, thereby welding them to each other. In a manufacturing apparatus, a rotational support arrangement is provided for supporting the needle and pipe members in such a manner that end faces of the respective needle and pipe members are abutted against each other at a location coincident with an optical axis of the laser beam, and for rotating the needle and pipe members about their respective axes.
REFERENCES:
patent: 3835912 (1974-09-01), Kristensen et al.
patent: 4291218 (1981-09-01), Myhre
patent: 4358658 (1982-11-01), Van Blarigan et al.
patent: 4733047 (1988-03-01), Cruickshank et al.
patent: 4794231 (1988-12-01), Banas et al.
Matsutani Kanji
Matsutani Masamitsu
Otsuka Tadashi
Tochimura Yoshimasa
Albritton C. L.
Matsutani Seisakusho Co., Ltd.
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