Filter for dry cleaning solvent

Details Filter for dry cleaning solvent Filter for dry cleaning solvent

1987-03-23

1989-03-07

Fisher, Richard V.

Liquid purification or separation

With repair or assembling means

210264, 210266, 210282, 210450, 210455, 210457, 2104931, 21049701, 55498, 55500, 55502, 55521, B01D 2706, B01D 2708

Patent

active

048103799

ABSTRACT:
A filter unit (1) has an annular pleated paper filter element (9) the pleats of which are sealed at their end edges (92) to define inwardly opening pockets. Consequently, gaskets (8) need only seal the radially innermost periphery of each end of the filter element (9), and end plates (4,5) supporting the gaskets (8) may be given a smaller diameter than the element (9).

REFERENCES:
patent: 3675776 (1972-07-01), Campo
patent: 3868325 (1975-02-01), Otto
patent: 3920553 (1975-11-01), Cilenta
patent: 3954618 (1976-05-01), Strauss
patent: 4065392 (1977-12-01), Gammon
patent: 4138337 (1979-02-01), Smith
patent: 4212739 (1980-07-01), Hilton et al.
patent: 4302330 (1981-11-01), Cusato, Jr.
patent: 4310419 (1982-01-01), Nara et al.
patent: 4320005 (1982-03-01), De Graffenreid
patent: 4422790 (1983-12-01), Gebert et al.
patent: 4640779 (1987-02-01), Taki et al.
patent: 4680118 (1987-07-01), Taga
patent: 4710297 (1987-12-01), Suzuki et al.

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