Bellows permitting twisting movement

Details Bellows permitting twisting movement Bellows permitting twisting movement

1976-12-02

1978-11-14

Aegerter, Richard E.

Pipes and tubular conduits

Flexible

Corrugated

138177, F16L 1100

Patent

active

041251300

ABSTRACT:
A bellows which is made up of a plurality of coaxially joined bellows elements each having a plurality of n parallelogram-shaped wall elements of thin plate material joined together and positioned around a common center axis. The upper and lower edges of the thus joined wall elements define spaced parallel congruent planar orthopolygonal shapes each having n sides, n being equal to or greater than 3. Each of the orthopolygonal shapes in angularly offset in a direction around the central axis from the next adjacent orthopolygonal shape. The wall elements each have a fold line between the diagonally opposite vertexes which are the farthest apart. The bellows can have a further bellows with an axial cross-sectional shape in the form of waves joined coaxially thereto.

REFERENCES:
patent: 525061 (1824-08-01), Schmidt et al.
patent: 2752172 (1956-06-01), Ziebold

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