US PATENT SUBCLASS 15 / 104.17
.~.~.~.~.~ Expanding at both ends

Current as of: June, 1999
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15 /   HD   BRUSHING, SCRUBBING, AND GENERAL CLEANING

104.001  DF  IMPLEMENTS {28}
104.03  DF  .~ Pipe, tube, or conduit cleaner {2}
104.05  DF  .~.~ Inside {8}
*  DD  .~.~.~ Reciprocating tool {2}
104.16  DF  .~.~.~.~ Scraper, cutter, wiper or brush {5}
104.17.~.~.~.~.~ Expanding at both ends

DEFINITION

Classification: 15/104.17

A reciprocatory scraper having a body provided with scraping members at each end of the tool body capable of being extended in outward directions to accommodate different-sized tubes.