(under subclass 374) Apparatus in which portions of the bit are connected together by (1) heating the parts to a plastic or fluid state and allowing the metals to flow together with or without the addition of other molten metal or (2) connecting the parts by means of melted or fluid metal (e.g., solder).
(1) Note. This subclass includes depositing weld material on a part of the bit as, for example, to form a wear surface or a cutting edge.
(2) Note. The mere recitation in a claim that parts of a bit are connected has been included in this subclass provided there is a specific description that the connection has been formed in the manner set forth in the definition of this subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
376, for a nonroller type bit having a welded portion.
