US PATENT SUBCLASS 228 / 169
.~.~.~.~.~ Having U-shaped or curved cross section

Current as of: June, 1999
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228 /   HD   METAL FUSION BONDING

101  DF  PROCESS {38}
141.1  DF  .~ With shaping {7}
164  DF  .~.~ Prior to bonding {4}
165  DF  .~.~.~ Forming channel, groove, or aperture for reception of filler material {3}
168  DF  .~.~.~.~ Annular seam {1}
169.~.~.~.~.~ Having U-shaped or curved cross section

DEFINITION

Classification: 228/169

(under subclass 158) Process including forming in at least one of the meeting faces a channel for the reception of filler material, and subsequent fusion bonding of the meeting faces.