Filter device, in particular for high-pressure applications...

Details Filter device, in particular for high-pressure applications... Filter device, in particular for high-pressure applications...

2007-05-01

2007-05-01

Kim, John (Department: 1723)

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

C210S232000, C210S237000, C210S437000, C210S457000, C210S485000, C210S488000, C210S497010, C210S498000, C210S499000

Reexamination Certificate

active

10486685

ABSTRACT:
A filter device, in particular, for high-pressure applications in a molten polymer filtration, has a screw-in piece (10), provided with a first threaded section (12) for fixing the filter device, and a second threaded section (14) for fixing a filter medium (16), in particular, in the form of a metal wool and with a perforated support tube (18) for the metal wool. The other free end of the filter device is provided with a volume displacer (24). The metal wool is surrounded by a support grid (20) and fixed by two fixing pieces (28, 30), held at a separation from each other by the support grid (20). One fixing piece (28) is fixed to the second threaded section (14) of the screw-in piece (10). The other fixing piece forms a handle (30) for the fixing formed. As a result of the volume displacer (24) being a one-piece component of the support tube (18) and the fixing piece (30) forming the handle covering the volume displacer (24), the filter device is significantly improved in that a simple and rapid assembly procedure for the exchangeable filter medium is provided. Also, the filter element construction is held formed to be free of damaging torsional loads.

REFERENCES:
patent: 4661249 (1987-04-01), Langley
patent: 4812235 (1989-03-01), Seleman et al.
patent: 6579348 (2003-06-01), Winter et al.
patent: 3326288 (1985-01-01), None
patent: WO 99/00434 (1990-01-01), None
patent: WO 01/52966 (2001-07-01), None

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