Heat-fusion pipe fitting system

Electric heating – Heating devices – With heating unit structure

Patent

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Details

1563801, 219535, 219541, 219492, 219494, 26427211, 285 21, 285292, H05B 358

Patent

active

045714886

ABSTRACT:
A thermoplastic heat-fusion pipe fitting system comprising a thermoplastic heat-fusion pipe fitting having a body portion to accommodate pipe and a shaped portion bearing a code indicative of the amount of heat required to effect fusion of the fitting, means for heating the fitting, means for sensing and decoding the code, and control means responsive to information decoded from the code for regulating the amount of heat applied by the heating means to the fitting.

REFERENCES:
patent: 3422179 (1969-01-01), Bauer et al.
patent: 3465126 (1969-09-01), Blumenkranz
patent: 3789192 (1974-01-01), Spindler
patent: 4117311 (1978-09-01), Sturm
patent: 4253011 (1981-02-01), Hinz
patent: 4486650 (1984-12-01), Bridgstock et al.

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