This is a residual class for metal fusion bonding as definedin this definition.
For placement of a patent in this class, its claimed disclosureshould meet the minimum requirements of the class definition, andshould not extend beyond the boundaries indicated in Scope of theClass, below, and discussed in Lines With Other Classes and WithinThis Class.
Terms followed by an asterisk (*) in the definitionsare defined in the Glossary, below.
This class provides for an apparatus for or a method of joiningthe meeting faces of juxtaposed or engaged metal work parts or ofthe same part originally in a form-sustaining state, by the directapplication of heat and/or mechanical energy to eitherof: (a) such work parts, to such an extent as to effect a flowingor blending together of some of the metal in neighboring regionsof said work parts into a continuous metallic zone interconnectingsaid work parts, or (b) such work parts and a metallic filler, tosuch an extent as to effect a flowing or blending together of thefiller and some of the metal of said work portions into a continuousmetallic zone interconnecting said work portions with filler andthus with each other.
Additionally, this class provides for methods of joining ametal work part to a juxtaposed or engaged nonmetal work part whereinbonding there between is effected by intermingling of the moleculesof the metal part with the nonmetal part; and for methods of joiningjuxtaposed or engaged nonmetal work parts when utilizing metallic cement.
SCOPE OF THE CLASS
Placement of an original patent into Class 228 may be madeon the basis of a claim reciting means for or the step of applyingto work portions energy in the form of: (1) heat; (2) pressure;and/or (3) vibratory energy, provided that there is a teachingthat a metal fusion bonded product is produced by the applied energy.
Also see Class 420, Alloys or Metallic Compositions.