Pipe joints or couplings – Molded joint – Composite pipe
Reexamination Certificate
2007-06-15
2011-11-15
Bochna, David E (Department: 3679)
Pipe joints or couplings
Molded joint
Composite pipe
C285S290300, C285S222100
Reexamination Certificate
active
08056935
ABSTRACT:
An interface is provided between a stiff piece (1) and a composite material (2), the composite material (2) including fibres (3), the stiff piece (1) including two or more vanes (4a, 4b, . . . ) protruding from a surface of the stiff piece (1). The vanes (4) include two or more lateral surfaces (41, 42, 43, 44), in which one or more fibres (3) of the composite material (2) are arranged for passing through one or more funnel-shaped throats (45) formed between lateral surfaces (41a, 43a, 41b, 43b, . . . ) of adjacent vanes (4a, 4b, . . . ). A fixing matrix material (7) is arranged around the one or more fibres (3), at least in or near the funnel-shaped throats (45). The vanes (4) are arranged for exerting counteracting transversal and axial forces on the fibres (3) and the fixing matrix material (7) when the interface is subject to forces.
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PCT Search Report & Written Opinion in PCT/NO2007/000212 dated Dec. 16, 2008.
Gustafson Claes-Goran
Vedvik Nils-Petter
Bochna David E
Manelli Selter PLLC
Stemberger Edward J.
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