(under the class definition) Apparatus wherein the apparatus is provided with means normally positioned above the ground (e.g., outside the borehole) to clean the apparatus or some portion thereof. Said cleaning means may include wiping, scraping, brushing or flushing with a fluid.
(1) Note. A mere conduit for cleaning or drilling fluid is not considered to be a means to clean the tool shaft.
SEE OR SEARCH THIS CLASS, SUBCLASS:
209+, for a fluid or cuttings directing or receiving means engaging the bore entrance, through which extends a tool shaft, and a seal means between said means and the tool shaft which allows axial movement of said tool shaft relative to said means.
SEE OR SEARCH CLASS
15, Brushing, Scrubbing, and General Cleaning, appropriate subclasses, particularly
104.03+, for pipe and tube cleansers. 166, Wells,
82.1, and 86.1+ and the search there noted for seals or wipers for reciprocating member.
414, Material or Article Handling,
417, for a pusher plate type ejector for emptying a receptacle.
