Plastic article or earthenware shaping or treating: apparatus – Shaping surface including means to release or remove product... – By differential gas pressure ejecting means
Reexamination Certificate
2006-12-13
2009-10-20
Gupta, Yogendra (Department: 1791)
Plastic article or earthenware shaping or treating: apparatus
Shaping surface including means to release or remove product...
By differential gas pressure ejecting means
C425S441000, C425S556000
Reexamination Certificate
active
07604475
ABSTRACT:
A mold apparatus for injection molding of the invention comprises: a fixed bush that is sliding fitted to a fixed side template formed with a cavity, via an inclined surface, so as to be movable with respect to each other in mold opening and clamping directions; and a movable bush that is sliding fitted to a movable mold stripper via an inclined surface, so as to be movable with respect to each other in mold opening and clamping directions. A plurality of air blowing circuits are formed in the fixed bush and the movable bush, and at the time of mold opening, a small gap is formed between the inclined surfaces, and air (warm air) is blown from the small gap towards an extension portion of a molded product so as to give mold release. High quality injection molded products can be molded without using any hazardous mold release agents.
REFERENCES:
patent: 3373460 (1968-03-01), Ladney, Jr
patent: 4570897 (1986-02-01), Von Holdt
patent: 4632357 (1986-12-01), Von Holdt
patent: 4653997 (1987-03-01), Sheffield et al.
patent: 4660801 (1987-04-01), Schad
patent: 5824256 (1998-10-01), Ballester
patent: 6177041 (2001-01-01), Bietzer
patent: 6238202 (2001-05-01), Joseph
patent: 6241931 (2001-06-01), Ciccone et al.
patent: 6390800 (2002-05-01), Brown et al.
patent: 6604934 (2003-08-01), Ciccone et al.
patent: 6736628 (2004-05-01), Zuffa
patent: 2005/0266115 (2005-12-01), Ciccone
patent: 09-314608 (1997-12-01), None
patent: 2002-178354 (2002-06-01), None
patent: 2003-117967 (2003-04-01), None
patent: 2003-145594 (2003-05-01), None
patent: 2003-320563 (2003-11-01), None
patent: 2004-017468 (2004-01-01), None
patent: 2004-025602 (2004-01-01), None
patent: 2004-066699 (2004-03-01), None
patent: 2005-238603 (2005-09-01), None
Edwards Angell Palmer & & Dodge LLP
Gupta Yogendra
Kanagawaseiki Co., Ltd.
Luk Emmanuel S
Wofsy Scott D.
LandOfFree
Mold 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 Mold apparatus for injection molding, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mold apparatus for injection molding will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4141217