.~ With fluid conduit lining or element (e.g., slush tube)
DEFINITION
Classification: 175/393
(under subclass 327) Apparatus in which the bit is provided with means to conduct fluid comprising (1) a coated or treated passage or (2) a distinct element which is limited in use to fluid conducting, directing or blocking a fluid passage.
(1) Note. Under (2) of the definition, only those fluid conducting elements are included which do not form fundamental parts of the bit structure (e.g., a fluid conducting element which also functions to attach or connect cutter elements to a bit head or tool shaft is classified with the bit or cutter structure).
(2) Note. The fluid conducting element may form only a portion of the wall of the fluid conduit.
SEE OR SEARCH THIS CLASS, SUBCLASS:
339+, and the search there noted for other drilling fluid nozzle or conduit details and particularly subclass 340 for a removable nozzle or conduit element in a roller cutter bit.
SEE OR SEARCH CLASS
299, Mining or In Situ Disintegration of Hard Material, 81, for a cutter head for mining or disintegrating hard
