Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Reexamination Certificate
2005-12-13
2005-12-13
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
C264S328120, C425S130000, C425S562000, C425S564000
Reexamination Certificate
active
06974556
ABSTRACT:
A co-injection nozzle pin (20) having downstream and upstream ends. The nozzle pin has therein a central bore (30) including an upstream end (32) adapted to communicate with a first material and a downstream end (34) exiting at the downstream end of the pin. The nozzle pin also has an outer surface (36) including a first portion (38) having a diameter D1, a second portion (40) having a diameter D2, wherein D2is less than D1and the first portion is rearward of the second portion. The pin further includes a channel (46) spiralling around the outer surface and being adapted to communicate with a second material. The channel (46) includes a first segment (52) defined in the first portion (38) of the outer surface and increasing in depth as it travels in a downstream direction and a second segment (54) defined in the second portion (40) of the outer surface and decreasing in depth as it travels in a downstream direction.
REFERENCES:
patent: 3981661 (1976-09-01), Taylor
patent: 4083903 (1978-04-01), Gilbert et al.
patent: 4124308 (1978-11-01), Sokolow
patent: 4126291 (1978-11-01), Gilbert et al.
patent: 4213751 (1980-07-01), Fernandez
patent: 4219323 (1980-08-01), Bright et al.
patent: 4279582 (1981-07-01), Osuna-Diaz
patent: 4333629 (1982-06-01), Roy
patent: 4712990 (1987-12-01), Kurdert et al.
patent: 4925100 (1990-05-01), Kudert et al.
patent: 4934915 (1990-06-01), Kudert et al.
patent: 4946365 (1990-08-01), Kudert et al.
patent: 4950143 (1990-08-01), Krishnakumar et al.
patent: 5028226 (1991-07-01), De'ath et al.
patent: 5037285 (1991-08-01), Kudert et al.
patent: 5040963 (1991-08-01), Beck et al.
patent: 5221507 (1993-06-01), Beck et al.
patent: 5443378 (1995-08-01), Jaroschek et al.
patent: 5523045 (1996-06-01), Kudert et al.
patent: 5552105 (1996-09-01), Konefal
patent: 5601774 (1997-02-01), Schmidt et al.
patent: 5650178 (1997-07-01), Bemis et al.
patent: 5662945 (1997-09-01), Konefal
patent: 5891381 (1999-04-01), Bemis et al.
patent: 5916605 (1999-06-01), Swenson et al.
patent: 5968558 (1999-10-01), Kudert et al.
patent: 5972258 (1999-10-01), Sicilia
patent: 5975871 (1999-11-01), Kudert et al.
patent: 6007108 (1999-12-01), Braun
patent: 6062840 (2000-05-01), Lee
patent: 6089468 (2000-07-01), Bouti
patent: 0825008 (1998-02-01), None
patent: 0911138 (1999-04-01), None
patent: 59201834 (1984-11-01), None
Bemis Peter F.
Cykana Daniel
Fiacchino Stephen R.
Kolste Steven J.
O'Grady Michael P.
Bemis Manufacturing Company
Heitbrink Jill L.
Michael & Best & Friedrich LLP
LandOfFree
Co-injection apparatus for injection molding does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Co-injection apparatus for injection molding, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Co-injection apparatus for injection molding will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3505961