Injection mold and injection mold pin

Details Injection mold and injection mold pin Injection mold and injection mold pin

2005-08-16

2005-08-16

Heitbrink, Tim (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With product ejector

C264S334000, C425S444000, C425S812000

Reexamination Certificate

active

06929464

ABSTRACT:
An ejector pin of an injection mold includes a sleeve, a valve structure, and a biasing member. The sleeve has a passage hole and an enlarged hollow portion, which communicate with each other via a stepped portion engaged therebetween. The valve structure has a valve portion and a collar portion, which are disposed in the sleeve. The collar portion of the valve structure is biased by the biasing member such as a spring and stopped by the stepped portion. Gaps interposed between the valve structure and the sleeve serve as a gas passageway through which gas in a molding cavity is exhausted by a vacuum pump.

REFERENCES:
patent: 5511967 (1996-04-01), Berdan
patent: 6345974 (2002-02-01), Kawasaki et al.
patent: 6575730 (2003-06-01), Muller
patent: 5-261765 (1993-10-01), None

Affiliated with

Also associated with

Rating

Injection mold and injection mold pin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Injection mold and injection mold pin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Injection mold and injection mold pin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3447689