Graded particle-size retention filter medium for fluid...

Details Graded particle-size retention filter medium for fluid... Graded particle-size retention filter medium for fluid...

2007-02-20

2007-02-20

Savage, Matthew O. (Department: 1724)

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

C210S500100

Reexamination Certificate

active

11093470

ABSTRACT:
A fluid filtration unit having two or more filter medium layers and/or zones, at least one of the layers/zones having a different particle retention capability disposed on each side of a non-filtering separator element. The filter medium are presently preferably positioned such that each succeedingly distal filter layer or zone from the separator has a decreased particle retention capability than each proceeding filter layer or zone. The filter medium layer most proximal to the separator element may be separated from the separator by a support material for supporting such filter medium element and preventing collapsing of the medium into any separator conduit. At least one of the medium elements is formed from a material which swells in size due to fluid absorption with the various zones and the separator being operatively connected by a new and innovative edge seal. The new and innovative edge seal is presently preferably formed from a thermoplastic material having a modulus of elasticity which is sufficient to permit radial expansion of the edge seal when the unit medium swells in size.

REFERENCES:
patent: 2395301 (1946-02-01), Sloan
patent: 2444147 (1948-06-01), Walton
patent: 2639251 (1953-05-01), Kracklauer
patent: 2788901 (1957-04-01), Boeddinghaus et al.
patent: 3005556 (1961-10-01), Jensen
patent: 3158532 (1964-11-01), Pall et al.
patent: 3259248 (1966-07-01), Weigand
patent: 3382985 (1968-05-01), Muehl
patent: 3452877 (1969-07-01), Mesek et al.
patent: 3486627 (1969-12-01), Ashby et al.
patent: 3493119 (1970-02-01), Allen
patent: 3537592 (1970-11-01), Ogden et al.
patent: 3618783 (1971-11-01), Cuyler
patent: 3735871 (1973-05-01), Bisko
patent: 3935110 (1976-01-01), Schmid et al.
patent: 4007113 (1977-02-01), Ostreicher
patent: 4007114 (1977-02-01), Ostreicher
patent: 4025438 (1977-05-01), Gelman et al.
patent: 4115277 (1978-09-01), Swank
patent: 4309247 (1982-01-01), Hou et al.
patent: 4347208 (1982-08-01), Southall
patent: 4430232 (1984-02-01), Doucet
patent: 4606824 (1986-08-01), Chu et al.
patent: 4637876 (1987-01-01), Dosoudil
patent: 4661255 (1987-04-01), Aumann et al.
patent: 4704207 (1987-11-01), Chu
patent: 4707265 (1987-11-01), Barnes, Jr. et al.
patent: 4714647 (1987-12-01), Shipp, Jr. et al.
patent: 4726901 (1988-02-01), Pall et al.
patent: 4783262 (1988-11-01), Ostreicher et al.
patent: 4859340 (1989-08-01), Hou et al.
patent: 4881313 (1989-11-01), Artinyan et al.
patent: 4900346 (1990-02-01), Lutz
patent: 4948561 (1990-08-01), Hinckley et al.
patent: 4981591 (1991-01-01), Ostreicher
patent: 4983288 (1991-01-01), Karbachsch et al.
patent: 5011555 (1991-04-01), Sager
patent: 5030349 (1991-07-01), Drori
patent: 5055192 (1991-10-01), Artinyan et al.
patent: 5062864 (1991-11-01), Hasegawa et al.
patent: 5069789 (1991-12-01), Mohn et al.
patent: 5085780 (1992-02-01), Ostreicher
patent: 5085784 (1992-02-01), Ostreicher
patent: 5102542 (1992-04-01), Lawrence et al.
patent: 5156661 (1992-10-01), Adiletta
patent: 5186825 (1993-02-01), Drori
patent: 5221479 (1993-06-01), Etoh et al.
patent: 5232595 (1993-08-01), Meyer
patent: 5271838 (1993-12-01), Rahimi et al.
patent: 5283106 (1994-02-01), Seiler et al.
patent: 5284184 (1994-02-01), Noone et al.
patent: 5316678 (1994-05-01), Heaslip
patent: 5340479 (1994-08-01), Szczepanski et al.
patent: 5383087 (1995-01-01), Noone et al.
patent: 5389256 (1995-02-01), McEwen et al.
patent: 5429745 (1995-07-01), Ogata et al.
patent: 5433859 (1995-07-01), Degen
patent: 5435916 (1995-07-01), Schwartz
patent: 5469892 (1995-11-01), Noone et al.
patent: 5472537 (1995-12-01), Friel et al.
patent: 5537136 (1996-07-01), Brandon et al.
patent: 5586997 (1996-12-01), Pall et al.
patent: 5591335 (1997-01-01), Barboza et al.
patent: 5607391 (1997-03-01), Klinger et al.
patent: 5609947 (1997-03-01), Kamei et al.
patent: 5641402 (1997-06-01), Kohonen et al.
patent: 5716522 (1998-02-01), Chilton et al.
patent: 5720790 (1998-02-01), Kometani et al.
patent: 5736042 (1998-04-01), Aoki
patent: 5820756 (1998-10-01), McEwen et al.
patent: 5846438 (1998-12-01), Pall et al.
patent: 5902480 (1999-05-01), Chilton et al.
patent: 5958236 (1999-09-01), Bakula
patent: 6168718 (2001-01-01), Sutter et al.
patent: 6203713 (2001-03-01), Tanny
patent: 6312609 (2001-11-01), Solyanik et al.
patent: 6939466 (2005-09-01), Pulek et al.
patent: 19837257 (2000-02-01), None
patent: 22904 (1985-02-01), None
patent: 63278517 (1988-11-01), None
patent: 4090808 (1992-03-01), None
patent: 5-2709 (1993-01-01), None
patent: 788480 (1992-07-01), None
Zeta Plus Generation H Series Filter Cartridge, sales brochure, 1996.
Zeta Plus Generation 2 Cartridge System, sales brochure, 1995.
PolyPro XL, sales brouchure, 1997.

Affiliated with

Also associated with

Rating

Graded particle-size retention filter medium for fluid... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Graded particle-size retention filter medium for fluid..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Graded particle-size retention filter medium for fluid... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3844607