US 4,784,366 A · Pour hole lock system

Abstract

An improved mold assembly which has a cavity mold part and a cover which form a space into which foam precursors are poured and the cover carries a mold insert which is bonded to the foam formed in the mold space; the cover carries a pour spout and a seal for preventing foam leakage from the space wherein the improvement comprises: means including a pour hole and a rotatable tube extending through said pour hole for defining a pour spout having an inboard end located within the space when the mold assembly is closed; seal means in surrounding sealing relationship with said inboard end of said rotatable tube; and means operative when the cover is closed and when the tube is located in the pour space for holding the insert within a desired variation of a designed location in said space and for holding the insert against said seal means to prevent foam leakage through the pour hole.

Claims9

Dependent claims

In a mold tooling system having a female mold part and a mold cover for carrying an insert to be positioned within the cavity of the female mold part the improvement comprising:

means for defining a lock catch on said insert;
fill means for defining a pour nozzle for directing foam precursors through the mold cover into the cavity of the female mold part;
and coacting surface means on said fill means and said lock catch for engaging said fill means to said insert for releasably securing and locating the insert on the cover to reduce the variation of the actual insert location within the cavity with reference to a preseclected true location therein.

In a mold assembly having a cavity mold part and a cover forming a space for receiving foam precursors and an insert during a plastic foaming process and wherein the cover carries a pour spout and a seal for preventing foam leakage from the space the improvement comprising:

means forming a pour hole and a rotatable tube extending through said pour hole for defining a pour spout having an inboard end located within the space when the mold assembly is closed;
seal means in surrounding sealing relationship with said inboard end of said rotatable tube;
and lock means operative when said tube is positioned in the pour space for holding the insert within a desired variation of a designed position in said space and against said seal means to seal against foam leakage around said pour hole.

Dependencies are inferred from the claim text.

Pour hole lock system

Life of this patent

Pour hole lock system

Life of this patent

Abstract

Claims9