Liquid purification or separation – Plural distinct separators – Filters
Patent
1997-07-22
1999-03-09
Walker, W. L.
Liquid purification or separation
Plural distinct separators
Filters
210486, 210487, 210488, 298966, 2989662, B01D 2954
Patent
active
RE0361330
ABSTRACT:
Disclosed is a hub ring for a filter wherein a supporting member having a plurality of supporting portions is interposed between a pair of keep plates, a supporting plate for a filter wherein a plurality of wave portions extending substantially in the circumferential direction are arranged in the radial direction, and methods for manufacturing these members. The hub ring has a great opening ratio to achieve a low pressure loss property and causes substantially no residence of polymer, and the hub ring can be manufactured at a low cost. The supporting plate has high pressure resistance, low-pressure loss property, good directivity of polymer flow and excellent polymer mixing effect, and it is suitable for use as a retainer disposed inside of a filter.
REFERENCES:
patent: 2263853 (1941-11-01), Re Qua
patent: 4876007 (1989-10-01), Naruo et al.
patent: 5055192 (1991-10-01), Artinyan et al.
Murakami Keiichi
Yasue Syoichi
Kabusushiki Kaisha Toukai Spring Seisakusho
Miller Austin R.
Nagase & Co. Ltd.
Walker W. L.
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