Filter cartridge

Details Filter cartridge Filter cartridge

1984-03-15

1989-11-07

Fisher, Richard V.

Gas separation

With means securing or retaining separating media

Hinged or pivoted retainer or clamp on backing frame or in...

55498, 55501, 55521, 21032182, 210484, 2104932, 2104935, 21050036, B01D 2706

Patent

active

048789305

ABSTRACT:
A filter cartridge for removing particles or dust from a stream of moving gas or air, including a filter medium disposed between a pleated inner wire support frame, outer longitudinal wire support stays disposed along each inner apex of the pleats of the filter medium, and end caps. The outer wire stays are formed from inwardly bent wires which attach at each end to the inner frame and exert pressure on the filter medium to support it against inner pressure of a pulse jet cleaning device. Preferred filter media are felt or fabric composites containing a layer of porous expanded polytetrafluoroethylene membrane. A preferred form of lower end cap has the periphery contoured to conform to the configuration of the filter medium and inner support frame. The cartridge structure is advantageous in preventing build-up of ledges of dust on protuberances, with consequent reduction of filter efficiency.

REFERENCES:
patent: 1322378 (1919-11-01), Vaughan
patent: 3177637 (1965-04-01), Davis
patent: 3326382 (1967-01-01), Bozek et al.
patent: 3486626 (1969-12-01), Close
patent: 3679537 (1972-07-01), Huer et al.
patent: 4007026 (1977-02-01), Groh
patent: 4363643 (1982-12-01), Elbrader et al.
PCT WO83/03364, published 13 Oct. 1983.

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