US PATENT SUBCLASS 166 / 176-- .~ On sucker rod

US PATENT SUBCLASS 166 / 176
.~ On sucker rod

Current as of: June, 1999
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166 /	HD	WELLS

170	DF	BRUSHING, SCRAPING, CUTTING OR PUNCHING-TYPE CLEANERS {6}
176		.~ On sucker rod

DEFINITION

Classification: 166/176

(under subclass 170) Devices in which the cleaning element is supported on a sucker rod which is used to pump the well while the scraper is on it.

SEE OR SEARCH THIS CLASS, SUBCLASS:

175, for scrapers on sucker rods, the scrapers being reciprocable relative to the sucker rod.

SEE OR SEARCH CLASS

175, Boring or Penetrating the Earth,

325.1+, and the search there noted, for earth boring apparatus having bore well engaging means carried on the tool or tool shaft.