Flowing arch expansion joint using FEP liner bonded to fiberglas

Details Flowing arch expansion joint using FEP liner bonded to fiberglas Flowing arch expansion joint using FEP liner bonded to fiberglas

1994-09-12

1996-01-16

Arola, Dave W.

Pipe joints or couplings

Flexible joint, rigid members

Bellows

285423, 138137, F16L 2100

Patent

active

054841739

ABSTRACT:
An improved flowing arch expansion joint includes a fiberglass body layer having an overlapping longitudinal seam that are bonded together by a layer of heat flowable fluoropolymer material. The radial expansion strength of the joint is enhanced by a supplemental peripheral reinforcing strip extending over less than the entire axial length of the joint, in the area of the maximum diameter portion, only. The peripheral reinforcing strip is formed by a winding process in which tire cord-based strip material is wound at a laying angle as close as possible to ninety degrees relative to the axis of the joint.

REFERENCES:
patent: 2703109 (1955-03-01), Saville
patent: 3580616 (1971-05-01), Merkwacz
patent: 4098528 (1978-07-01), Stanley
patent: 4241944 (1980-12-01), Clark
patent: 4732413 (1988-03-01), Bachmann
patent: 5147695 (1992-09-01), Colley et al.

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