Double cylinder screen

Details Double cylinder screen Double cylinder screen

1986-12-24

1989-04-04

Fisher, Richard V.

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

2104942, 210499, 291637, 29902, B01D 2504

Patent

active

048184039

ABSTRACT:
A double cylinder screen comprises an inner reinforcing cylinder which performs a pressure-resisting function against an external pressure and an outer screen cylinder which performs a screen function. The inner reinforcing screen comprises inner rods disposed cylindrically at a predetermined interval in the axial direction of the screen and a spiral reinforcing member wound on the outside of the inner rods and welded to the inner rods. The outer screen cylinder comprises screen rods disposed at a predetermined interval in the axial direction on the outer periphery of the inner reinforcing member and a wire wound spirally about the outside of the screen rods and welded to the screen rods. The width of a slit of the reinforcing member is larger than the width of a slit of the wire. The double screen cylinder is improved in its stength and can be manufactured without requiring a costly jig.

REFERENCES:
patent: 982485 (1911-01-01), Everlein
patent: 1287031 (1918-12-01), Johnson
patent: 2346647 (1944-04-01), Bennism
patent: 2682309 (1954-06-01), Banchwack
patent: 3101526 (1963-08-01), Paullus et al.
patent: 3132099 (1964-05-01), Eilhauer
patent: 3816894 (1974-06-01), Howard et al.
patent: 4068713 (1978-01-01), McGuire
patent: 4421646 (1983-12-01), Correge et al.
patent: 4494603 (1985-01-01), Hargiundey
patent: 4657079 (1987-04-01), Nagouka

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