Device for scraping off deposits from internal surfaces of elongated tubes

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United States of America Patent

PATENT NO 4315541
SERIAL NO

06070615

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Device for scraping off a deposit from the internal wall surface of an elongated tube of relatively small diameter, comprising a helical coil spring which is installed inside the tube and adapted to be reciprocally movable and/or rotatable, said spring scraping off the deposit from the internal wall surface of the tube.

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Patent Owner(s)

  • MITSUI TOATSU CHEMICALS, INC.;TOYO ENGINEERING CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Murata, Sadao Takaishi, JP 19 518
Numata, Tadanobu Kamakura, JP 4 31

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