US PATENT SUBCLASS 166 / 170
BRUSHING, SCRAPING, CUTTING OR PUNCHING-TYPE CLEANERS

Current as of: June, 1999
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166 /   HD   WELLS

170BRUSHING, SCRAPING, CUTTING OR PUNCHING-TYPE CLEANERS {6}
171  DF  .~> Perforation cleaners
172  DF  .~> Bow spring type
173  DF  .~> On tubing or casing
174  DF  .~> Retractable on support while lowering
175  DF  .~> Reciprocable relative to central member extending from well top
176  DF  .~> On sucker rod

DEFINITION

Classification: 166/170

(under the class definition) Devices comprising means for cleaning well conduits or other devices in a well by brushing, scraping, cutting or punching.

(1) Note. The devices in this and indented subclasses are for removing only material deposited on well elements or conduits.

SEE OR SEARCH THIS CLASS, SUBCLASS:

177.3, for means for cleaning by wiping.

SEE OR SEARCH CLASS

15, Brushing, Scrubbing, and General Cleaning, appropriate subclasses, especially 104.05+, for devices of general utility for cleaning pipes and subclass 249 for flue cleaners. Where the sole disclosure or claimed use of a cleaner is a use inside a well, classification is in Class 166.

92, Expansible Chamber Devices,

87, for a piston for an expansible chamber device which includes brushing, scraping or cutting means.

175, Boring or Penetrating the Earth,

263+, for earth boring bits having cutter elements laterally shiftable below ground and subclasses 327+ for earth boring bits, per se.

417, Pumps,

545+, for well swabs (valved pistons reciprocated in a well to remove fluid therefrom). Well swabs classifiable in Class 417 may include scrapers. Such patents should be cross-referenced to Class 166.