Electric heating – Metal heating – By arc
Patent
1989-04-28
1991-10-22
Albritton, C. L.
Electric heating
Metal heating
By arc
21912164, B23K 2600
Patent
active
050597582
ABSTRACT:
In the joining of two elements of hard material which are included in an implant or prosthetic structure, the elements are disposed towards one another by means of a joint formed by contact surfaces. The elements are adjusted to one another and mutually fixed and welded together by laser equipment. Registering circumferential portions of the joint are exposed to two focusing optical devices which emit laser pulses for the welding and form a part of the laser equipment. The focusing devices are aligned each towards one of two substantially registering, or slightly mutually offset, starting areas. Each respective area includes a section of each respective joint circumferential portion with circumjacent parts on the elements. The laser equipment is energized to emit, through the focusing devices, simultaneous or alternating laser pulses or laser beams, and the elements and devices are mutually, controllably displaceable such that laser output emission may be effected towards the starting areas and subsequent areas with associated sections of joint circumferential portions and material parts.
REFERENCES:
patent: 4708654 (1987-11-01), Branemark
patent: 4714815 (1987-12-01), Swarts et al.
patent: 4767328 (1988-08-01), Branemark
Albritton C. L.
Nobelpharma AB
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