Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Reexamination Certificate
2007-08-28
2007-08-28
Heitbrink, Jill L. (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
C249S068000, C264S334000, C425S444000, C425S556000
Reexamination Certificate
active
10893663
ABSTRACT:
A decelerated ejector pin system in an ejector half of an injection mold, that molds a molded part. The ejector half has at least one lifter, a core plate, a pin plate, an ejector bar, a base plate, and at least one ejector pin. The decelerated ejector pin system includes at least one further ejector pin to be moved and decelerated through the core plate. The decelerated ejector pin system has at least one sleeve that is actuated by the core plate for decelerating the further ejector pin. A spring is disposed in the ejector bar. At least one stop pin supports the further ejector pin and compresses the spring, and a cap attaches to the stop pin for pre-stressing the spring.
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Menges et al., How to Make Injection Molds, 3rdedition, 2001, Hanser Publishers, pp. 437-474.
“Acelerador Expulsion/Accelerated Ejector”, CUMSA General Catalogue, Feb. 2004, p. 2.13.
Dassler Alfred K.
Eagle Mold Company
Greenberg Laurence A.
Heitbrink Jill L.
Stemer Werner H.
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