Expandable cavity for injection molding tool

Details Expandable cavity for injection molding tool Expandable cavity for injection molding tool

2009-02-27

2011-10-18

Gupta, Yogendra (Department: 1744)

Plastic article or earthenware shaping or treating: apparatus

Shaping surface including means to release or remove product...

By movable mold sections

C425S441000, C425S556000, C425S557000, C425SDIG058

Reexamination Certificate

active

08038433

ABSTRACT:
An injection molding tool having a first section moveable with respect to a second section. In a first position, the first section contacts the second section along a parting line and forms a cavity. An expandable cavity part is moveably mounted with respect to the second section. In a closed condition, the expandable cavity part is in a retracted or molding position. The expandable cavity part can be moved away from the molding position or the closed condition to a release position or an expanded condition with allows access to molded part or other article. A core pin is either moveably mounted with respect to the expandable cavity part or is in a fixed position with respect to the expandable cavity part.

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Co-Pending U.S. Appl. No. 12/456,476, filed Jun. 17, 2009; inventors David Helenius et al.; title Lock for Core Assembly for Injection Molding Tool.
Hasco Z 3600/ . ./S Collapsible Core advertising brochure (5 pages); 04 07; No. 01031955.

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