Device for scraping off deposits from internal surfaces of elong

Details Device for scraping off deposits from internal surfaces of elong Device for scraping off deposits from internal surfaces of elong

1979-08-29

1982-02-16

Richter, Sheldon J.

Heat exchange

With scraper removing product from temperature modifying...

165109R, 366335, 422135, F28F 924

Patent

active

043155413

ABSTRACT:
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.

REFERENCES:
patent: 496757 (1893-05-01), Theisen
patent: 1080408 (1913-12-01), Bahr
patent: 1770208 (1930-07-01), Kemnal
patent: 3384161 (1968-05-01), Malmstrom et al.
patent: 3801286 (1974-04-01), Anolick et al.

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