Water main scraper

Details Water main scraper Water main scraper

1989-01-30

1990-04-03

Roberts, Edward L.

Brushing, scrubbing, and general cleaning

Implements

Pipe, tube, or conduit cleaner

29 8102, 29 811, 29 8111, B08B 902, B23D 7900

Patent

active

049127993

ABSTRACT:
A scraper for use in repairing underground pipe breaks consisting of two parallel chains carrying transverse square scraper rods.

REFERENCES:
patent: 1283070 (1918-10-01), Callender
patent: 3214824 (1965-11-01), Brown
patent: 4750249 (1988-06-01), Richardson

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