Plastic article or earthenware shaping or treating: apparatus – Shaping surface including means to release or remove product... – By movable mold sections
Reexamination Certificate
2007-12-18
2007-12-18
Heitbrink, Tim (Department: 1722)
Plastic article or earthenware shaping or treating: apparatus
Shaping surface including means to release or remove product...
By movable mold sections
C425S556000, C425S577000, C425SDIG058
Reexamination Certificate
active
11209315
ABSTRACT:
A polymeric injection mold has stationary and movable parts mating at a parting line. The polymeric part has one or more re-entrant surfaces on both sides of the parting line, wherein the re-entrant surfaces are defined by slide bar projections inserted into the mold. The slide bar projections are attached to slide bars that pass through tapered slots in the side walls of the stationary and movable sides of the mold and are inclined at an angle to the centerline of the mold. The slide bars of the stationary side of the mold are removably connected to pull bars, wherein the pull bars are rigidly attached at their opposite ends to the movable side of the mold. When the movable side of the mold is withdrawn, the injection molded part is pulled out of the stationary side of the mold when the slide bar projections clear the re-entrant surfaces.
REFERENCES:
patent: 3910748 (1975-10-01), Kopernik
patent: 4362291 (1982-12-01), Fuke et al.
patent: 4495135 (1985-01-01), White
patent: 4678158 (1987-07-01), Brock
patent: 4731014 (1988-03-01), Von Holdt
patent: 4854849 (1989-08-01), Sudo
patent: 5137442 (1992-08-01), Starkey
patent: 5219594 (1993-06-01), Meyer et al.
patent: 5252057 (1993-10-01), Landstorfer
patent: 5551864 (1996-09-01), Boskovic
patent: 5814357 (1998-09-01), Boskovic
patent: 5882568 (1999-03-01), Kashiwagi
patent: 6039558 (2000-03-01), Park et al.
patent: 6235231 (2001-05-01), Martin
patent: 6474977 (2002-11-01), Wimmer
patent: 6491513 (2002-12-01), Schneider
patent: 6537053 (2003-03-01), Watkins
patent: 6655952 (2003-12-01), Kraft
patent: 2003/0113399 (2003-06-01), Urbanek
patent: 2003/0147989 (2003-08-01), Kasai et al.
patent: 2005/0042322 (2005-02-01), Takao
patent: 09-155926 (1997-06-01), None
patent: 2003/071876 (2002-06-01), None
patent: 2002/172662 (2003-03-01), None
Plastic Injection Moulding-An Introduction′ at http://www.azom.com/details.asp?ArticleID=265, Jan. 7, 2005.
Injected Molded Tooling Specification′ at http://fordpkgstd.com/discus/messages/9/914.html?1064854717, Nov. 23, 2003.
Turner, Ryan Anthony,Tapered LIGA Mold Insert, Louisiana State University, 2001 thesis.
Carle Richard J.
Pierson Theodore J.
Buff Ernest D.
Ernest D. Buff & Associates LLC
Heitbrink Tim
Luk Emmanuel S
Pierson Theodore J.
LandOfFree
Polymeric injection mold with retractable bars for producing... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Polymeric injection mold with retractable bars for producing..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polymeric injection mold with retractable bars for producing... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3855538