Stock material or miscellaneous articles – Structurally defined web or sheet – Nonplanar uniform thickness material
Reexamination Certificate
2005-09-13
2005-09-13
Pyon, Harold (Department: 1772)
Stock material or miscellaneous articles
Structurally defined web or sheet
Nonplanar uniform thickness material
C428S178000, C428S188000, C428S131000, C428S137000, C052S793100, C052S220200
Reexamination Certificate
active
06942915
ABSTRACT:
This invention relates to fibre reinforced plastic (“FPR”) roofing materials with a sandwich structure. A pair of sheets of FRP are arranged with a gap between them, and a rib structure which joins the sheets is interposed. Further, this invention relates to a method for producing FRP roofing material in which channels are provided in the core material and a reinforcing fibre impregnated with a resin is distributed through these channels. A preferred joint structure for the roofing material is to use butt joints and to provide a connecting layer extending across the surfaces of both ends of the sandwich structures. A layer containing a resin distribution medium is provided between the abutting end faces. This invention overcomes various problems of conventional joint structures, permitting the ends of the sandwich structures to be easily, firmly and cheaply joined together, ensuring high joint strength and rigidity, while achieving excellent appearance.
REFERENCES:
patent: 3920871 (1975-11-01), Johnson
patent: 4078348 (1978-03-01), Rothman
patent: 4232494 (1980-11-01), Bauch et al.
patent: 4361613 (1982-11-01), Bogner et al.
patent: 4730428 (1988-03-01), Head et al.
patent: 5678369 (1997-10-01), Ishikawa et al.
patent: 5706620 (1998-01-01), De Zen
patent: 5729944 (1998-03-01), De Zen
patent: 5849393 (1998-12-01), Slattery
patent: 5928772 (1999-07-01), Shiraishi et al.
patent: 5979684 (1999-11-01), Ohnishi et al.
patent: 6247747 (2001-06-01), Kawanomoto et al.
patent: 6309732 (2001-10-01), Lopez-Anido et al.
patent: 0453598 (1991-10-01), None
patent: 2177139 (1987-01-01), None
patent: 08193409 (1996-07-01), None
patent: 09202145 (1997-08-01), None
patent: 10281462 (2000-04-01), None
Ito Toshihiro
Kondo Toshiyuki
Matsuura Masashi
Morrison & Foerster / LLP
Pyon Harold
Simone Catherine A.
Toray Industries Inc.
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