Aesthetic orthodontic band and welded attachment assembly
摘要
An orthodontic assembly that includes a band and an attachment has one or more spot welds to secure the band to the attachment. The spot welds are characterized by the lack of any outer surface weld deformation that is circular in shape, or that is visible to the naked eye when viewed at a distance of twenty-four inches. Apparatus for welding the attachment to the band includes a subframe that is swingable in an arc to follow the inner contour of the band in order to provide automated welding on mesial and distal sides of the attachment.
申请公布号
US5529491(A)
申请公布日期
1996.06.25
申请号
US19940311349
申请日期
1994.09.23
申请人
MINNESOTA MINING AND MANUFACTURING COMPANY
发明人
HILGENFELDT, THORSTEN G.;AMUNDSON, ALLEN B.;SANDOVAL, NICHOLINE M.;LEKA, FANTU W.;MANEMANN, ROBERT C.;CAMPBELL, CASEY A.