US PATENT SUBCLASS 228 / 161
.~.~.~.~.~ Producing internal cavity, aperture, or opening

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

101  DF  PROCESS {38}
141.1  DF  .~ With shaping {7}
155  DF  .~.~ Subsequent to bonding {4}
159  DF  .~.~.~ Removing of material {2}
160  DF  .~.~.~.~ By cutting {2}
161.~.~.~.~.~ Producing internal cavity, aperture, or opening

DEFINITION

Classification: 228/161

(under subclass 159) Process wherein the shaping operation produces a void or recession in the work part(s) such that a cross-section can be taken there across which will show the void to be completely encircled by material of the part(s).

(1) Note. The void in the work part(s) may extend all the way from one side to the other or may extend only part way therethrough.