Device for the prestressing of concentric cylinders

Details Device for the prestressing of concentric cylinders Device for the prestressing of concentric cylinders

1978-10-12

1980-08-26

Kozma, Thomas J.

Inductor devices

With temperature modifier

Ventilating passages

138148, 336197, H01F 2708, H01F 2730

Patent

active

042197929

ABSTRACT:
A device for effecting mechanical prestressing in a pair of substantially concentric cylinders, in which the inner cylinder is prestressed in compression and the outer cylinder is prestressed in tension by means of the device in the form of a hose or hoses disposed in a gap between the cylinders and being subjected internally to a pressure medium, the hose or hoses being arranged helically in such a manner that the sum of the moments of the forces thereby caused by the pressure forces between the cylinders and occurring about the central axis of the cylinders in a plane containing such axis, is substantially zero.

REFERENCES:
patent: 1915352 (1933-06-01), Bottoms
patent: 3164666 (1965-01-01), Camilli
patent: 3646972 (1972-03-01), Kuypers
patent: 3775842 (1973-12-01), Sheldon et al.

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