Composite strip windable to form a helical pipe and method...

Details Composite strip windable to form a helical pipe and method... Composite strip windable to form a helical pipe and method...

2007-02-13

2007-02-13

Brinson, Patrick F. (Department: 3754)

Pipes and tubular conduits

Flexible

Spirally wound material

C138S154000, C138S173000, C138S174000, C138S122000

Reexamination Certificate

active

11348285

ABSTRACT:
A composite strip10windable to form a helical pipe is disclosed. The composite strip10comprises: an elongate plastic strip11having a base portion12and at least one lengthwise extending rib portion20upstanding from the base portion12; and an elongate reinforcing strip30extending lengthwise and supported laterally by the rib portion20, the reinforcing strip30having a height to thickness ratio of at least three to one and orientated substantially perpendicular to the base portion12. When wound into a helical pipe, the reinforcing strip30reinforces the pipe against radial crushing loads. A bead40seals the reinforcing strip30from the environment. Desirably the composite strip10further comprises: a planar lamina50extending lengthwise and bonded to the base portion12, the lamina50having a higher Young's modulus and strength than those of the plastic strip11. The lamina50greatly improves the pressure rating of a pipe wound from the strip10.

REFERENCES:
patent: 3890181 (1975-06-01), Stent et al.
patent: 4172474 (1979-10-01), Stahl
patent: 4173670 (1979-11-01), VanAuken
patent: 4734145 (1988-03-01), Monia
patent: 7004202 (2006-02-01), Bateman et al.
patent: 0 535 326 (1993-04-01), None
patent: 2 143 002 (1985-01-01), None
patent: 62-245632 (1987-09-01), None
patent: 08-128505 (1996-05-01), None
patent: WO 89/11963 (1989-12-01), None
patent: WO 93/07412 (1993-04-01), None
patent: WO 99/08033 (1999-02-01), None

Affiliated with

Also associated with

Rating

Composite strip windable to form a helical pipe and method... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Composite strip windable to form a helical pipe and method..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composite strip windable to form a helical pipe and method... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3855635