Annular pleated filter cartridge for liquid filtration...

Details Annular pleated filter cartridge for liquid filtration... Annular pleated filter cartridge for liquid filtration...

2005-06-28

2005-06-28

Cecil, Terry K. (Department: 1723)

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

C210S489000, C210S493100, C210S493500

Reexamination Certificate

active

06910589

ABSTRACT:
A pleated filter cartridge for filtering liquids including an annular filter element having a filter material which is a thin non-perforated non-woven material of flash-spun plexifilamentary high-density polyethylene fibrils, the filter material having a pressure drop of less than 4 psid at a flow rate of 10 gal/hr and a filtration efficiency of at least 98% of 1–2 micron particulates at a pressure differential of 30 psid. The filter material preferably has a mean flow pore size greater than 4 microns while its normal pore-size filtration rating is 1 micron, and preferably has a thickness of less than about 0.15 mm, most preferably less than or equal to about 0.13 mm. The filter element preferably has two layers, including a mesh layer, preferably of a low-density polyethylene. The mesh most preferably has a softening temperature range below the lower end of the softening temperature range of the high-density polyethylene filter material, and is tack-point interconnected to the filter material without having compromised the filter material.

REFERENCES:
patent: 3042571 (1962-07-01), Jackson
patent: 3057481 (1962-10-01), Pall
patent: 3169899 (1965-02-01), Steuber
patent: 3306794 (1967-02-01), Humbert, Jr.
patent: 3403862 (1968-10-01), Dworjanyn
patent: 3485706 (1969-12-01), Evans
patent: 3532589 (1970-10-01), David
patent: 3570675 (1971-03-01), Pall et al.
patent: 3716436 (1973-02-01), Pall et al.
patent: 3752321 (1973-08-01), McLaren
patent: 3945873 (1976-03-01), Osborn
patent: 4033881 (1977-07-01), Pall
patent: 4075106 (1978-02-01), Yamazaki
patent: 4086774 (1978-05-01), Duggins
patent: 4133763 (1979-01-01), Cooper
patent: 4152389 (1979-05-01), Miller
patent: 4154688 (1979-05-01), Pall
patent: RE30779 (1981-10-01), Cooper
patent: 4402830 (1983-09-01), Pall
patent: 4479874 (1984-10-01), Rosenberg et al.
patent: 4579698 (1986-04-01), Meyering et al.
patent: 4588464 (1986-05-01), Miyagi et al.
patent: 4609465 (1986-09-01), Miller
patent: 4842739 (1989-06-01), Tang
patent: 4906371 (1990-03-01), Miller
patent: 4929303 (1990-05-01), Sheth
patent: 4929354 (1990-05-01), Meyering et al.
patent: 5023130 (1991-06-01), Simpson et al.
patent: 5064598 (1991-11-01), Seiler
patent: 5084178 (1992-01-01), Miller et al.
patent: 5098767 (1992-03-01), Linnersten
patent: 5152890 (1992-10-01), Linnersten
patent: 5154827 (1992-10-01), Ashelin et al.
patent: 5182162 (1993-01-01), Andrusko
patent: 5185190 (1993-02-01), Grimes
patent: 5252207 (1993-10-01), Miller et al.
patent: 5258127 (1993-11-01), Gsell et al.
patent: 5275743 (1994-01-01), Miller et al.
patent: 5290443 (1994-03-01), Norton
patent: 5290445 (1994-03-01), Buttery
patent: 5360650 (1994-11-01), Grimes
patent: 5435957 (1995-07-01), Degen et al.
patent: 5462675 (1995-10-01), Hopkins et al.
patent: 5476585 (1995-12-01), Mills
patent: 5543047 (1996-08-01), Stoyell et al.
patent: 5545323 (1996-08-01), Koehler et al.
patent: 5552048 (1996-09-01), Miller et al.
patent: 5593529 (1997-01-01), Grimes
patent: 5605625 (1997-02-01), Mills
patent: 5614095 (1997-03-01), Degen et al.
patent: 5700304 (1997-12-01), Foo
patent: 5702603 (1997-12-01), Johnson et al.
patent: 5733452 (1998-03-01), Whitlock
patent: 5753343 (1998-05-01), Braun et al.
patent: 5855784 (1999-01-01), Pike et al.
patent: 6034008 (2000-03-01), Lim et al.
patent: 6046118 (2000-04-01), Jones et al.
patent: 6143106 (2000-11-01), Shane
patent: 6309438 (2001-10-01), Kanno et al.
patent: 2002/0179521 (2002-12-01), Paul
patent: WO98/07905 (1998-02-01), None
patent: WO 98/07905 (1998-02-01), None
patent: WO 01/29295 (2001-04-01), None
Polymer Science Dictionary (Alger, Mark, Elsevier Science Publishers, Ltd., c.1989, pp. 205 & 248).
Materials Handbook (Brady et al.. McGraw-Hill Book Co., 12th edition, pp. 633-634).
Hawley's Condensed Chemical Dictionary (Lewis, R. Sr. John Wiley & Sons, Inc., 13th edition, pp. 897-898.
“Ethylene Polymers, HDPE”, Encyclopedia of Polymer Science and Technology (web version), John Wiley & Sons, Inc., physical properties pp. 1-6, and abstract and polymer properties pp. 1-5, articles posted online Oct. 22, 2001.
Ethylene Polymers, LDPE, Encyclopedia of Polymer Science and Technology (web version), John Wiley & Sons, Inc.,abstract and properties, pp.1-5 and uses, pp. 1-12, articles posted online Oct. 22, 2001.
Hawley's Condensed Chemical Dictionary (Lewis, Richard J. Sr., 13thed., p. 897).
Hawley's Condensed Chemical Dictionary (Lewis, Sr. Richard J., 13thed. pp. 897-899).
Ethylene Polymers, HDPE (Encyclopedia of Polymer Science and Technology, copywright 2002 by John Wiley & Sons Inc., article online posting date Oct. 22, 2001, pp. 1-6).
Ethylene Polymers, LDPE (Encyclopedia of Polymer Science and Technology, copywright 2002 by John Wiley & Sons Inc., article online posting date Oct. 22, 2001, pp. 1-12).
DuPont Tuvek—“The Medium that Fits a Wide Variety of Filtration Needs” Sep. 23, 1997.
E.I. Dupont De Nemours and Company, and Oberlin Filter Company—“Membrane Microfiltration”.
U.S. Appl. No. 09/436,587, filed Nov. 9, 1999, Rose.

Affiliated with

Also associated with

Rating

Annular pleated filter cartridge for liquid filtration... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Annular pleated filter cartridge for liquid filtration..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Annular pleated filter cartridge for liquid filtration... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3521757