Hinged and segmented pipe

Details Hinged and segmented pipe Hinged and segmented pipe

2004-03-18

2008-11-11

Brinson, Patrick F (Department: 3754)

Pipes and tubular conduits

Longitudinally seamed

Sectional

C138S156000, C138S120000, C138S162000, C138S163000, C285S419000

Reexamination Certificate

active

07448414

ABSTRACT:
A rigid pipe (1) is achieved according to the invention in that half-cylinder shaped elements (2) are joined/hinged (3) to each other and where to a such chains are connected together with their concave sides in a zipper-like motion. The two half-cylindrical chains are spooled (13) up individually on each side of a housing (12). This result in a particularly rigid pipe of varying length with a wide area of use.

REFERENCES:
patent: 3360894 (1968-01-01), Sharman
patent: 3450186 (1969-06-01), Caffa et al.
patent: 3491182 (1970-01-01), Eikos et al.
patent: 3503164 (1970-03-01), Berry
patent: 6283203 (2001-09-01), Eilertsen
patent: 2003/0178086 (2003-09-01), Hu
patent: 1290206 (1972-09-01), None
patent: 459267 (1989-06-01), None
patent: WO 9608671 (1996-03-01), None

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