.~ Rolling cutter bit or rolling cutter bit element {26}
337
.~.~ With drilling fluid supply to bearing
DEFINITION
Classification: 175/337
(under subclass 331) Apparatus in which the cutter element is rotatably mounted on a bearing and in which drilling fluid is supplied to the bearing to clean, cool or lubricate such bearing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
227+, for storage or conduit means for bit lubricant other than drilling fluid.
339+, for other drilling fluid conduit structure in a rolling cutter bit.
SEE OR SEARCH CLASS
384, Bearings,
93, for bearing structure with lubrication means which are adapted for use in roller type rock drill bits and only enough support structure for the bearing. The lubricant can be drilling fluid. The support can be broadly recited roller cutter bit but not details of the cutter relating to cutting, or lubricating a cutter.
