Apparatus for locking a sprue bushing in a mold assembly

Details Apparatus for locking a sprue bushing in a mold assembly Apparatus for locking a sprue bushing in a mold assembly

1985-12-09

1987-03-31

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

With apparatus assembly or dismantling means or with idle part

For extrusion or injection type shaping means

425192R, 425567, 425569, B29C 4517

Patent

active

046539956

ABSTRACT:
A locking ring for use in an injection molding machine and for securing a sprue bushing in place with respect to a mold plate assembly such that the sprue bushing is retained in place with respect to movement in the direction of the longitudinal axis of the sprue bushing bore, and from rotating in the bore.

REFERENCES:
patent: 3109201 (1963-11-01), Dulmage
patent: 3443001 (1969-05-01), Adair et al.
patent: 3677682 (1972-07-01), Putkowski
patent: 3698849 (1972-10-01), Czerski
patent: 3897929 (1975-08-01), Hartmann
patent: 4289473 (1981-09-01), Von Holdt
patent: 4428725 (1984-01-01), Babiol

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