Pipes and tubular conduits – Flexible – Spirally wound material
Reexamination Certificate
2011-01-18
2011-01-18
Brinson, Patrick F (Department: 3754)
Pipes and tubular conduits
Flexible
Spirally wound material
C138S125000, C138S122000, C138S150000, C138S154000, C138S133000
Reexamination Certificate
active
07870876
ABSTRACT:
A hose having both excellent flexibility and shape retainability and advantageous in construction efficiency and cost efficiency. The hose comprises hard synthetic resin reinforcement material (2) spirally fed and having, on both sides of the top part (2D) thereof in the tube axial direction, receiving surfaces (2a) and (2b) positioned on the radial inner side toward the end part thereof and a soft synthetic resin hose body for covering the spirally fed reinforcement materials (2). The reinforcement materials (2) are spirally fed in the state of the top parts being positioned on the radial outer side thereof, a soft synthetic resin tape material (3) is fed to the fed reinforcement (2), and while covering parts (3A) projected in a generally arc shape to the center of the reinforcement materials (2) by melting the tape material or with an adhesive agent.
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Brinson Patrick F
Kanaflex Corporation Inc.
Kratz Quintos & Hanson, LLP
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