Hybrid mandrels

Details Hybrid mandrels Hybrid mandrels

2007-07-25

2010-10-19

Gupta, Yogendra N (Department: 1791)

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

C249S122000, C249S175000, C249S183000, C264S221000, C425S438000, C425SDIG010

Reexamination Certificate

active

07815839

ABSTRACT:
A mandrel comprising a rigid inner core and an elastomeric outer layer that at least partially surrounds the rigid inner core, wherein the elastomeric outer layer is adapted to expand during a molding process to seal a cavity to prevent incursion of material injected during the molding process.

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