Tube scraper

Details Tube scraper Tube scraper

2006-08-07

2009-02-17

Thomas, David B (Department: 3723)

Brushing, scrubbing, and general cleaning

Implements

Pipe, tube, or conduit cleaner

Reexamination Certificate

active

07490381

ABSTRACT:
A tube scraper for removing deposits from the interior surface of heat exchange tubes, the scraper being fitted with a set of diverging scraper blade arms mounted on an arbor in nested relationship such that scraper blades have overlapping scraping edges.

REFERENCES:
patent: 488842 (1892-12-01), Shultz
patent: 507421 (1893-10-01), Dean
patent: 1180485 (1916-04-01), French
patent: 1814752 (1931-07-01), Griffin
patent: 2317542 (1943-04-01), Lincoln
patent: 2636202 (1953-04-01), Hinzman
patent: 3047895 (1962-08-01), Ver Nooy
patent: 3619844 (1971-11-01), Collins et al.
patent: 4034807 (1977-07-01), Prince et al.
patent: 6581235 (2003-06-01), Stocco

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