US PATENT SUBCLASS 219 / 105
.~.~.~.~ Preparation of edges

Current as of: June, 1999
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219 /   HD   ELECTRIC HEATING

50  DF  METAL HEATING (E.G., RESISTANCE HEATING) {19}
78.01  DF  .~ For bonding with pressure (e.g., resistance welding) {16}
101  DF  .~.~ Butt {3}
104  DF  .~.~.~ Methods {3}
105.~.~.~.~ Preparation of edges

DEFINITION

Classification: 219/105

(under subclass 104) Subject matter relating to the preparation of the edges to be bonded.

(1) Note. The edges, for example, may be preshaped.

SEE OR SEARCH THIS CLASS, SUBCLASS:

73, for arc welding with flux.

SEE OR SEARCH CLASS

228, Metal Fusion Bonding, appropriate subclasses for metallurgical bonding by nonelectrical heating; particularly

141.1+, when combined with work shaping; and subclasses 203+ when combined with other pretreating of the work.