Bellows with an improved twisting capability

Details Bellows with an improved twisting capability Bellows with an improved twisting capability

1997-07-28

1998-09-01

Brinson, Patrick F.

Pipes and tubular conduits

Flexible

Corrugated

1381181, 138177, 138DIG11, F16L 1110

Patent

active

057996997

ABSTRACT:
A bellows includes a flexible tube with a pleated wall which has valleys and peaks extending in parallel planes across an axis of the flexible tube. At least one of the valleys and at least one of the peaks extend in a respective one of the planes. Each of the valleys and peaks in a corresponding one of the planes is staggered in an axial direction with the other one of the peaks and valleys in an adjacent one of the planes. The pleated wall further has ridges. Each of the ridges is in the form of a segment of a helix and interconnects a corresponding pair of the staggered peaks.

REFERENCES:
patent: 1035931 (1912-08-01), Woodbridge
patent: 2819488 (1958-01-01), Gimbel
patent: 3412628 (1968-11-01), DeGain
patent: 3716733 (1973-02-01), Keith et al.
patent: 3785290 (1974-01-01), Castor et al.
patent: 4125130 (1978-11-01), Yamamoto
patent: 4165110 (1979-08-01), Itzler
patent: 4802511 (1989-02-01), Hensley
patent: 5439035 (1995-08-01), Palu
patent: 5564472 (1996-10-01), Gipperich

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