Method of molding a socket part on a synthetic resinous pipe end

Details Method of molding a socket part on a synthetic resinous pipe end Method of molding a socket part on a synthetic resinous pipe end

1976-08-27

1979-01-23

Pavelko, Thomas P.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156294, 156306, 264249, 264296, 264322, 425392, 425DIG218, B29D 2300

Patent

active

041359615

ABSTRACT:
A method of molding a socket part on a synthetic resinous pipe end is disclosed. The socket part is for use in the connection of synthetic resinous pipes and is provided with a filler ring for filling a space created by a spigot pipe end, the inclined surface at the interior of the socket part, and a virtual inner surface formed by the two connected pipes. In addition, the filler ring fulfills a function in the capacity of a stopper which regulates the insertion length of the spigot pipe. For the purpose of its being retained in the socket part, the filler ring to be employed should have its external diameter be slightly larger than the internal diameter of the part which has been molded as the socket part, and is held through the medium of a holding means which is maintained concentrically with the core mold. On the other hand, the core mold is arranged correctly in alignment with the pipe which is to be molded at one end in the socket part, by jointly using a centering guide means for the inserted pipe, if necessary, in company with the core mold. The arrangement of the filler ring should be synchronized with the molding of the socket part, thus the filler ring being able to remain in the exact position of the socket part on removing the core mold at the conclusion of one operation cycle.

REFERENCES:
patent: RE27736 (1973-08-01), Muhlner
patent: 2446281 (1948-08-01), Harding
patent: 2865079 (1958-12-01), Marchiolo
patent: 2962408 (1960-11-01), Fourmanoit
patent: 3807027 (1974-04-01), Heisler
patent: 3836622 (1974-09-01), Sporre
patent: 3887992 (1975-06-01), Parmann
patent: 3924999 (1975-12-01), Harris
patent: 3929958 (1975-12-01), Parmann
patent: 3940227 (1976-02-01), Strasser
patent: 4030872 (1977-06-01), Parmann

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