Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Reexamination Certificate
2007-05-29
2007-05-29
Miggins, Michael C. (Department: 1772)
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
C428S036600, C428S483000, C138S141000, C156S244130, C156S244110
Reexamination Certificate
active
10803247
ABSTRACT:
A multi-layered pipe of arbitrary length and cross-section is produced by co-extrusion of a segmented thermoplastic copolyester elastomer (COPE) outer body over the exterior surface of an annular tubular core of CPVC/PVC having a wall thickness, measured in the radial direction, in the range from about 0.95 mm (38 mils) to about 1.375 mm (55 mils). The COPE is cohesively bonded to the annular core coextensively with essentially the entire length of the pipe. Though the COPE is easily degraded in contact with water, and CPVC and blends of CPVC with less than 25% by weight of PVC are typically rigid when extruded as pipe, a laminated pipe of COPE and CPVC/PVC with the specified wall thickness and overall dimensions which in the laminated pipe satisfy an applicable plumbing code (SDR-11 in the U.S.) has essentially the same performance characteristics as commercially available CPVC pipe which is a monolayer and not a laminate.
REFERENCES:
patent: 3023192 (1962-02-01), Shivers, Jr.
patent: 3651014 (1972-03-01), Witsiepe
patent: 3763109 (1973-10-01), Witsiepe
patent: 3766146 (1973-10-01), Witsiepe
patent: 3784520 (1974-01-01), Hoeschele
patent: 3801547 (1974-04-01), Hoeschele
patent: 4156774 (1979-05-01), Buxbaum et al.
patent: 4264761 (1981-04-01), McGirk
patent: 4349469 (1982-09-01), Davis et al.
patent: 4355155 (1982-10-01), Nelsen
patent: 4405749 (1983-09-01), Nelsen
patent: 4569973 (1986-02-01), Tyrell et al.
patent: 5366257 (1994-11-01), McPherson et al.
patent: 6000436 (1999-12-01), Auvil et al.
patent: 6730401 (2004-05-01), Jackson et al.
patent: 2003/0157321 (2003-08-01), Dalal et al.
patent: 0 212 449 (1987-03-01), None
patent: 1 262 312 (2002-12-01), None
patent: 57116642 (1982-07-01), None
patent: 07179717 (1995-07-01), None
patent: 2002254576 (2002-09-01), None
patent: WO 00/32974 (2000-06-01), None
Elias, Hans-Georg, Midland Macromolecular Institute, Midland, MI, Translated from the German by Mary M. Exner, Gordon and Breach Science Publishers, “New Commercial Polymers 1969-1975, Polyesters”, pp. 85-89.
Witsiepe, W.K., American Chemical Society, Advances in Chemistry Series 129 (edited by Norbert A.J. Platzer). 1973, “Polymerization Reactions And New Polymers”, pp. 39-59.
Backman Arthur L.
Dalal Girish T.
Vontorcik Joseph J.
Dunlap Thoburn T.
Laferty Samuel B.
Miggins Michael C.
Noveon, Inc.
Powell Joe A.
LandOfFree
Flexible laminated plastic pipe having a chlorinated... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Flexible laminated plastic pipe having a chlorinated..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flexible laminated plastic pipe having a chlorinated... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3816075