Method and apparatus for maintaining the concentricity of a mold

Details Method and apparatus for maintaining the concentricity of a mold Method and apparatus for maintaining the concentricity of a mold

1978-10-25

1980-06-03

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

264 462, 264 469, 425141, 425259, 425817C, B29D 2704

Patent

active

042061644

ABSTRACT:
A pipe insulation is made between an inner and outer mold core from a liquid which foams and then forms a solid. The foaming action may cause movement in the inner mold which is detected and then adjusted accordingly to maintain concentricity between the inner and the outer wall of the pipe insulation. The insulation may be used alternatively as pipe.

REFERENCES:
patent: 2820987 (1958-01-01), Bunch
patent: 3159786 (1964-12-01), Bayne
patent: 3288895 (1966-11-01), Windeler
patent: 3459851 (1969-08-01), MacPherson
patent: 3748577 (1973-07-01), Jones
patent: 3754064 (1973-08-01), Snelling et al.
patent: 3816043 (1974-06-01), Snelling et al.
patent: 3914357 (1975-10-01), Cereijo et al.
patent: 3985483 (1976-10-01), Clay et al.

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