Injection molding apparatus with a melt channel in valve pin

Details Injection molding apparatus with a melt channel in valve pin Injection molding apparatus with a melt channel in valve pin

2007-06-05

2007-06-05

Heitbrink, Tim (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

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

With means between charger and mold to cut off flow of...

C425S566000

Reexamination Certificate

active

10962551

ABSTRACT:
An injection molding apparatus includes a manifold with a manifold melt channel, a nozzle with a nozzle channel and a valve pin with an outer surface in proximal to an inner surface of the nozzle channel. A valve pin melt channel is defined by and substantially coaxial to the valve pin. The valve pin melt channel communicates with the manifold melt channel when the valve pin is retracted and is restricted from the manifold melt channel when the valve pin is extended. A mold gate is open when the valve pin is retracted and is closed by a valve pin tip of the valve pin when the valve pin is extended. An outlet extends from a longitudinal portion of the valve pin melt channel to the surface of the valve pin adjacent to the valve pin tip and is in continuous communication with a well adjacent the mold gate.

REFERENCES:
patent: 3553788 (1971-01-01), Putkowski
patent: 4521179 (1985-06-01), Gellert
patent: 4902218 (1990-02-01), Leonard et al.
patent: 4925384 (1990-05-01), Manner
patent: 5049062 (1991-09-01), Gellert
patent: 5162125 (1992-11-01), Akselrud et al.
patent: 5238378 (1993-08-01), Gellert
patent: 5324190 (1994-06-01), Frei
patent: 5324191 (1994-06-01), Schmidt
patent: 5830524 (1998-11-01), Braun
patent: 5851571 (1998-12-01), Manner
patent: 5900200 (1999-05-01), Teng
patent: 5955120 (1999-09-01), Deissler
patent: 6270711 (2001-08-01), Gellert et al.
patent: 7018198 (2006-03-01), Lebreton
patent: 2003/0224086 (2003-12-01), Olaru
patent: 2004/0131721 (2004-07-01), Babin et al.
patent: 0 779 683 (1997-10-01), None
patent: 0 800 907 (1997-10-01), None
patent: 0 800 907 (2001-04-01), None
patent: 55-61438 (1980-05-01), None

Affiliated with

Also associated with

Rating

Injection molding apparatus with a melt channel in valve 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 molding apparatus with a melt channel in valve pin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Injection molding apparatus with a melt channel in valve pin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3830746