Extractor for plastic risers

Tools – Wrench – screwdriver – or driver therefor – Wheel or endless track operated

Patent

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Details

81 532, B25B 1348

Patent

active

039526186

ABSTRACT:
A device for extracting plastic risers from fittings such as polyvinyl-chloride water sprinkler pipes. The device has a shallow frusto-pyramidal shank having slightly concaval sides. The opposed edges of the shank lie at an angle of between 1.5.degree. and 5.degree. with respect to the longitudinal axis of the shank. The shank has a left-handed twist between 4.degree. and 36.degree. per inch of shank length. The shank is affixed to an extension rod which, in turn, has a handle to permit turning the device about its longitudinal axis.

REFERENCES:
patent: 1554287 (1925-09-01), McGuckin
patent: 1604032 (1926-10-01), Ferrell
patent: 2066132 (1936-12-01), Zihler
patent: 2244824 (1941-06-01), Caminez
patent: 3216292 (1965-11-01), Flegal

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