Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Reexamination Certificate
2007-01-09
2007-01-09
Johnson, Christina (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
C425S577000
Reexamination Certificate
active
10706847
ABSTRACT:
A method and apparatus for producing molded fluoropolymer sweep elbows with straight ends while minimizing distortion of the fitting. The invention includes a mold for creating the sweep fittings of the invention. The mold includes a mold cavity block and internal coring. The internal coring includes two symmetrical cores that shut off at a 45° miter. Each of the symmetrical cores is divided into two parts, an outside sweep core and an inside sweep core. The outside sweep core and the inside sweep core are divided on a straight plane running the length of the core. The outside sweep core molds half of the straight lumen and the greater curvature at the outside sweep surface of the bend. The inside sweep core molds the other half of the straight bore and the lesser curvature of the inside or undercut portion of the bend.
REFERENCES:
patent: 3095613 (1963-07-01), Johannes
patent: 3545718 (1970-12-01), Shale
patent: 3752436 (1973-08-01), Deutsch
patent: 4298330 (1981-11-01), Davis
patent: 4436690 (1984-03-01), Davis
patent: 5433902 (1995-07-01), Leyderman
patent: 6328309 (2001-12-01), Corbett, Jr.
Cadavid Carlos A.
Krantz Bradley
Nowak Dale J.
Entegris, Inc.
Huson Monica A
Johnson Christina
Patterson Thuente Skaar & Christensen P.A.
LandOfFree
Process and apparatus for molding polymer fittings does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process and apparatus for molding polymer fittings, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and apparatus for molding polymer fittings will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3764043