Earplug with molded-in stiffener

Details Earplug with molded-in stiffener Earplug with molded-in stiffener

2007-03-20

2007-03-20

Bianco, Patricia (Department: 3772)

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

C264S278000

Reexamination Certificate

active

10937211

ABSTRACT:
Earplugs with soft foam bodies and with stiffeners in the bodies, are molded by suspending the stiffener in the body mold cavity using a pin (60) that extends into a passage (56) at the rear of the body. Each stiffener is tapered in diameter, with a rear end (34) of greatest diameter.

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