US3419151A - Strainer bag construction - Google Patents

Strainer bag construction Download PDF

Info

Publication number
US3419151A
US3419151A US594619A US59461966A US3419151A US 3419151 A US3419151 A US 3419151A US 594619 A US594619 A US 594619A US 59461966 A US59461966 A US 59461966A US 3419151 A US3419151 A US 3419151A
Authority
US
United States
Prior art keywords
bag
strainer
felt
muslin
rounded
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US594619A
Inventor
Edward A Smith
Arthur C Wrotnowski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MARINE MIDLAND BANK NA
Original Assignee
American Felt Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by American Felt Co filed Critical American Felt Co
Priority to US594619A priority Critical patent/US3419151A/en
Priority claimed from FR128184A external-priority patent/FR1545996A/en
Application granted granted Critical
Publication of US3419151A publication Critical patent/US3419151A/en
Assigned to MARINE MIDLAND BANK, N.A. reassignment MARINE MIDLAND BANK, N.A. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: AMERICAN FELT & FILTER COMPANY, INC.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor
    • B01D29/11Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/111Making filtering elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor
    • B01D29/11Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13Supported filter elements
    • B01D29/23Supported filter elements arranged for outward flow filtration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor
    • B01D29/11Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13Supported filter elements
    • B01D29/23Supported filter elements arranged for outward flow filtration
    • B01D29/27Filter bags
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2201/00Details relating to filtering apparatus
    • B01D2201/28Position of the filtering element
    • B01D2201/287Filtering elements with a vertical or inclined rotation or symmetry axis

Description

Dec. 31, 1968 E. A. SMITH ETAL 3,419,151

STRAINER BAG CONSTRUCTION Filed Nov. 15, 1966 Sheet SLU RRY INVENTORS E D WA D A. 5M ITH ARTHUR C WROTNOWSKI ATTORNEYS Dec. 31, 1968 E. A. SMITH ETAL STRAINER BAG CONSTRUCTION Sheet 2 of 4 Filed Nov. 15. 1968 W oM ATTORNEYS Dec. 31, 1968 E. A. SMITH ETAL 3,419Ql51 STRAINER BAG CONSTRUCTION Filed Nov. 15, 1966 Sheet .3 of 4 THREAD USED B67 NYLON p.51. BURST l l l I I l l l l o 1 a 9|Ol| lalsmlsl's |7|e|s STITCHES/INCH VERTICAL sEAM STRENGTH TEST FIG.IO

RS. I. BURsT I I I BOTTOM SHAPE PRESSURE TEST FIG.H

INVENTORS EDWARD A. SMITH ARTHUR C.WRO TNOW$K| 4m zn/m.

ATTORNEYS Dec. 31, 1968 Filed Nov. 15, 1966 PS. I.

INITIAL BAG CIRC.

E. A. SMITH ETAL STRAINER BAG CONSTRUCTION Sheet MUSLiN CIRC.

(BREAK uNE) FLAT H CIRC. 22

{3. I S INCHES INVENTORS EDWARD A. 5M ITH ARTHUR c. WROTNOWSKI BY A TTOR/VEYS United States Patent 3,419,151 STRAINER BAG CONSTRUCTION Edward A. Smith, Glenville, and Arthur C. Wrotnowski,

Greenwich, 'Conn., assignors to American Felt Company, Glenville, Conn., a corporation of Massachusetts Filed Nov. 15, 1966, Ser. No. 594,619 1 Claim. (Cl. 210460) ABSTRACT OF THE DISCLOSURE A strainer bag made of fabricated flat felt, the bag having an open end and a rounded bottom to provide a substantially stress-free strainer bag when it is operating as a strainer. Also the bag may have an outer retainer jacket which is larger than the original circumference of the bag.

This invention relates to removable strainer bags and particularly those having an arcuate-like or rounded bottom end, the strainer media being of mechanically interlocked felt.

In the prior art, strainer bags have been rectangularly shaped with different configurations, such as being neckedin at the top and being made of a plurality of pieces. Usually, the bags have been tied onto the feed pipe. The bags must be strong enough so that optimum hydrostatic pressure can be used so as to provide optimum straining cycles. Also, bag combinations are needed to provide such cycles. Prior arrangements and bags have required frequent and expensive replacement and have not been satisfactory.-

One of the objects of the present invention is to provide a strainer bag of optimum shape or strength characteristics.

A further object of the invention is to provide a strainer bag having restraining means of selected dimensions for optimum efliciency and construction.

In one aspect of the invention, the strainer bag is made of one piece of felt which can be fabricated flat with a rounded-like bottom end, the rounded or curved bottom profile having chords located on a bias relative to the sides. The seams preferably are overlapped and the vertical seam extends to the bottom of the bottom end or bisects the angle thereof. The biased bottom end portions can have a slightly convex curve therein. The seams preferably are sewn with a plurality of rows of threads.

The felt preferably is composed of mechanically interlocked man-made fibers. The fibers may be of nylon, rayon, polypropylene, the polyester sold under the trademark Dacron of Du Pont or the acrylic fiber sold under the trademark Orion of Du Pont. Natural fibers also could be used. They can be chosen to produce a series of bags of felt calibrated as described in copending application Ser. No. 637,310, filed Nov. 2, 1966, in order to provide optimum strainer media which can separate or classify particles effective in the to 200 micron range. The bags can have attachment means such as described in copending application Ser. No. 599,661, filed Nov. 15, 1966.

In a further aspect, the felt bag can be enclosed in a muslin bag of selected dimensions or can be put into a wire basket. The bags can be used in conjunction with pressure vessels.

These and other objects, advantages and features of the invention will become apparent from the following description and drawings which are merely exemplary.

In the drawings:

FIG. 1 shows a piece of felt for producing the bag of the present invention;

FIG. 2 is a fragmentary view of the upper portion of the felt bag with the side seam completed;

3,419,151 Patented Dec. 31, 1968 FIG. 3 shows the felt of FIG. 2 with the vertical seam arranged to extend to the center of the rounded bottom end;

FIG. 4 is similar to FIG. 3 except that the vertical seam is at the side;

FIG. 5 shows the strainer bag in place on a holder and illustrates fluid flowing therefrom;

FIG. 6 shows another arrangement of the strainer bag with an outer muslin holder;

FIG. 7 shows the strainer bag within a wire basket and vessel;

FIG. 8 shows the cloth of FIG. 1 cut to form the arrangement of FIG. 3;

FIG. 9 shows one form of attachment means at the upper end of the bag;

FIG. 10 is a graph showing the relation of burst strength and seams;

FIG. 11 is a graph showing the relation of burst strength to the angle between a line or chord forming the lower portion of the rounded bottom end and the intersection of the bottom end with the sides;

FIG. 12 is a fragmentary view of a further embodiment; and

FIG. 13 is a graph showing the relation between the bursting strength and the relation of initial sizes of the bag and the muslin jacket therefor.

Referring to FIG. 1, the bag preferably is made of a single piece 10 of mechanically locked or needled felt. The felt also could have a woven insert as described in the patent to Gates, No. 2,588,228.

The preferred form is shown in FIG. 3 wherein the piece of felt is cut as shown in FIG. 8. Vertical seam 11 extends from the top or open end of the bag to the intersection 12 of the chords or edges 13 of the rounded bottom end 14 of the bag. The edges 13 have sewn seams. The vertical seam 15 also could be made at the side as seen in FIG. 4.

By making the bag of a single piece, instead of two pieces, the bottom is rounded to produce a stress-free bag utilizing of the inherent strength of the material from which it is made. If the bottom is made on the bias with a slight convex curve, a stress-free bag is produced. It was found that if the angle between the sides and a chord to the bottom is made between 32 and 45, the optimum limit pressure results were attained as can be seen in FIG. 11.

The seams are overlapped and a plurality of rows of stitches employed. Merely by way of example, the distance between rows of stitches and distance between rows can be made:

TABLE I 2 rows 3 rows The thread can be the same as the material of the bag.

In use, the bag can be suspended from a holding plate 14 which has a fluid supply pipe 12 thereto. The upper open end 16 can have a hem 17 (FIGS. 5, 9) with a flexible hoop 18 sewn therein. The holding plate 14 has a flange or ledge 19 for receiving the open end of the bag in assembled relation. Details of the holding means are shown in copending application Ser. No. 599,661, filed Nov. 15, 1966.

By use of the rounded-like bottom, the liquid passing through the strainer bag is guided to form a central stream 20 as seen in FIG. 5. This will prevent undesirable splashing and facilitate the collection point. If the end is square, the liquid will be irregular in its flow and will tend to flow from the corners which is not desirable.

An extension 25 (FIG. 12.) can be used further to concentrate or direct flow from the bottom or center of the strainer.

In a further arrangement, a muslin outer container or restrainer can be used as seen in FIG. 9. The muslin 21 can be used to enclosed bag 22 and support it at its top end as seen in FIG. 9.

As pressure is increased, the felt bag will tend to expand. The muslin tends to restrain such expansion so that a greater pressure can be used, such being possible up to the point the muslin bursts.

As an example and referring to FIG. 13, at 16 p.s.i., the muslin should be 1% larger and at 22 p.s.i. 2%" larger, 16 p.s.i. and 22 p.s.i. being the burst pressure when the muslin is made 1%" and 2%" larger than the felt bag. Thus, with a 44 x 36 count 1 ounce per square yard muslin, it should have a circumference of 14 inches, while the bag circumference should be 11% inches in order to reach a 22 psi. break point.

In the form shown in FIG. 6, the strainer is surrounded by a vessel 23 having an outlet 24.

In a still further form, the strainer 26 (FIG. 7) can be held in a wire basket 27 which is supported on ledge 28 of the walls 29 of vessel 30.

The strainer described herein also could be placed in various types of pressure vessels (not shown).

It is to be understood that the bottom edges could follow a chord without substantial curvature and the term rounded bottom includes such an arrangement.

It should be apparent that various details of construction and combinations can be utilized Without departing from the spirit of the invention except as defined in the appended claims.

What is claimed is:

1. A strainer bag of felt having a substantially cylindrical upper portion with an open upper end, a slightly convex lower portion, a vertical seam in said upper portion extending to said covex lower portion, said lower portion having a seam extending from the side edges adjacent the bottom of the cylindrical portion across the lower portion through the apex thereof, said lower portion being so constructed and arranged that a line drawn from the apex to the intersection of the cylindrical and convex portions is between about 32 and 45, said seams being interconnected to form the felt into a unitary strainer bag, and an attachment means surrounding said open end.

References Cited UNITED STATES PATENTS 567,387 9/1896 Hawley 210477 603,323 5/1898 Echart 210489 X 1,028,114 6/1912 Holton 210-474 X 1,284,944 11/1918 St. Pierre 210448 1,809,935 6/1931 Herzmark 210477 X 2,100,951 11/1937 Glass et al. 210460 X 2,286,434 6/1942 Myers et a1. 210489 X 2,416,524 2/1947 Huse et al. 210489 X 3,067,504 12/1962 Lubben et al. 210460 X 3,204,391 9/1965 SchWab 210448 X FOREIGN PATENTS 20,945 10/ 1925 Great Britain.

REUBEN FRIEDMAN, Primary Examiner.

C. M. DITLOW, Assistant Examiner.

US. Cl. X.R.

US594619A 1966-11-15 1966-11-15 Strainer bag construction Expired - Lifetime US3419151A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US594619A US3419151A (en) 1966-11-15 1966-11-15 Strainer bag construction

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US594619A US3419151A (en) 1966-11-15 1966-11-15 Strainer bag construction
GB51516/67A GB1205977A (en) 1966-11-15 1967-11-13 Strainer bag construction
DE1611043A DE1611043C3 (en) 1966-11-15 1967-11-14
FR128184A FR1545996A (en) 1966-11-15 1967-11-14 removable filter pockets

Publications (1)

Publication Number Publication Date
US3419151A true US3419151A (en) 1968-12-31

Family

ID=24379663

Family Applications (1)

Application Number Title Priority Date Filing Date
US594619A Expired - Lifetime US3419151A (en) 1966-11-15 1966-11-15 Strainer bag construction

Country Status (3)

Country Link
US (1) US3419151A (en)
DE (1) DE1611043C3 (en)
GB (1) GB1205977A (en)

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3495713A (en) * 1969-07-02 1970-02-17 Hsu Hsin Chi Lint and thread collecting bag for electric washing machine
US3633757A (en) * 1967-09-13 1972-01-11 Madern Jean Pierre Fluid filter
US3780868A (en) * 1972-04-19 1973-12-25 Dorr Oliver Inc Pressure filter having depending tubular filter elements
DE2354917A1 (en) * 1973-11-02 1975-05-07 Hoechst Ag Apparatus for dewatering industrial sludges
US3937621A (en) * 1974-11-25 1976-02-10 Phillips Petroleum Company Filter bag cuff
US3959138A (en) * 1974-11-07 1976-05-25 Nichols Louis B Washing machine drain filter
US3984330A (en) * 1974-11-07 1976-10-05 Nichols Louis B Washing machine drain filter
US4035304A (en) * 1974-07-05 1977-07-12 Terumo Corporation Blood filtering bag
US4058463A (en) * 1974-09-03 1977-11-15 Keene Corporation Element for filtering and separating fluid mixtures
US4122008A (en) * 1977-02-10 1978-10-24 Eddy Allen Filtration process for separating particles from liquid coolants in lens grinding devices
US4172788A (en) * 1977-02-28 1979-10-30 Ingram Alton E Caustic chlorine filter bag
US4250039A (en) * 1979-05-07 1981-02-10 Wire Cloth Products, Inc. Transmission filter
US4303519A (en) * 1978-04-14 1981-12-01 Delvecchio Evo Quick disconnect bag filter
US4564452A (en) * 1983-12-09 1986-01-14 Sharpe Anthony N Apparatus for filtration
US4604203A (en) * 1984-09-14 1986-08-05 Minnesota Mining And Manufacturing Co. Cooking oil filtering apparatus and filter therefor
US4680117A (en) * 1985-10-18 1987-07-14 The Gainesville 1920 Corporation Yogurt separator device
US4950392A (en) * 1987-06-15 1990-08-21 Hein-Werner Corporation Filtration tank for filtering waste water used in washing mechanical components
US5139686A (en) * 1990-10-04 1992-08-18 Gpl Partnership Method and apparatus for filtering dry cleaning solvent
US5156661A (en) * 1992-01-31 1992-10-20 Pall Corporation Bag filter with thermoplastic tape-sealed sewn seam
US5202020A (en) * 1989-10-11 1993-04-13 Desjoyaux Jean L Liquid filtering device for swimming pools in particular
US5217610A (en) * 1992-03-18 1993-06-08 Elite Commercial & Industrial, Inc. Apparatus for removing metal particles from a liquid and method for making same
US5626744A (en) * 1995-03-31 1997-05-06 Kimberly-Clark Corporation Pressure sensitive extended life filter
US5695651A (en) * 1993-07-13 1997-12-09 Apoc Limited Inlet screen
US6261445B1 (en) 1997-04-16 2001-07-17 Earl Roger Singleton Temporary silt guard for sewer inlet
US6334953B1 (en) 1999-11-24 2002-01-01 Roger Singleton Storm water drainage filter assembly
US20030070980A1 (en) * 2001-10-11 2003-04-17 Ray Michael Dean Biodegradable disposable bag for cement waste
US6651825B2 (en) * 2001-06-06 2003-11-25 Fresh Creek Technologies, Inc. Disposable net assemblies for apparatus for collecting floating debris
US20040105741A1 (en) * 2003-07-14 2004-06-03 Pat Inglese Wet (plastic) and dry concrete reclamation/disposal device
US6840385B2 (en) * 2000-12-19 2005-01-11 Sidney Goldman Lateral dispersion filter basket
US20090230049A1 (en) * 2008-03-14 2009-09-17 Ibs Filtran-Kunststoff-/Metallerzeugnisse Gmbh Oil filter device
US20090314715A1 (en) * 2007-10-04 2009-12-24 Conwell Michael K Method of dewatering solids laden liquids utilizing a reusable filter element
US7753090B2 (en) 2005-10-18 2010-07-13 Danny Earp Blasting fluid effluent containment device
US9149743B2 (en) 2007-10-04 2015-10-06 Michael K. Conwell Apparatus for dewatering solids-laden liquids
US9586725B2 (en) 2014-03-20 2017-03-07 Danny Earp Effluent container for cleaning heat exchangers
US10661204B2 (en) 2015-04-15 2020-05-26 REMARK-KAYSER Sp. z.o.o. Filter bag sealing method and a filter bag sealed therewith

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IE56164B1 (en) * 1984-12-21 1991-05-08 Philip Joeph Hartley Improvements in and relating to filter socks
DE3614712C2 (en) * 1986-04-30 1988-09-22 Diessel Gmbh & Co, 3200 Hildesheim, De
US4783258A (en) * 1986-06-05 1988-11-08 Willinger Bros. Filter cartridge with reuseable framework
US4877526A (en) * 1987-08-31 1989-10-31 Minnesota Mining And Manufacturing Company Flexible filter bag and method of fabrication
AT96U1 (en) * 1990-04-10 1995-02-27 Bosch & Schoerle Bosch & Schoe Milk filter stocking
FR2802112B1 (en) * 1999-12-13 2002-01-25 Piscines Desjoyaux Sa Device for filtering the water of a pool
DE10010950A1 (en) * 2000-03-06 2001-09-20 Sefar Ag Rueschlikon Disposable bioreactor for cultivation of dendritic cells used in immuno therapy, comprises a substrate-carrying organic material located in a pouch
DE10015788A1 (en) * 2000-03-30 2001-10-11 Jens Hendel Device for examining the sterility of fluids
IES20050777A2 (en) * 2005-11-22 2007-05-30 Chem Services An improved filter sock

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US567387A (en) * 1896-09-08 Coffee or tea percolator
US603323A (en) * 1898-05-03 Filter
US1028114A (en) * 1911-05-20 1912-06-04 Abby T Holton Strainer.
US1284944A (en) * 1918-02-21 1918-11-12 Octave J St Pierre Sink-trap.
GB220945A (en) * 1923-08-23 1925-11-19 Rudolf Hermann Heinrich Geffck Improvements in or relating to electric alarm devices
US1809935A (en) * 1928-07-30 1931-06-16 Abraham M Herzmark Coffee urn bag
US2100951A (en) * 1935-09-05 1937-11-30 Willie F Glass Filter
US2286434A (en) * 1939-11-14 1942-06-16 Myers Bruce Filter
US2416524A (en) * 1943-10-16 1947-02-25 Du Pont Composite filtering medium and method of filtering
US3067504A (en) * 1959-06-12 1962-12-11 Permanent Filter Corp Method of making a filter sock
US3204391A (en) * 1962-12-28 1965-09-07 Schwab Louis Air filtration

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US567387A (en) * 1896-09-08 Coffee or tea percolator
US603323A (en) * 1898-05-03 Filter
US1028114A (en) * 1911-05-20 1912-06-04 Abby T Holton Strainer.
US1284944A (en) * 1918-02-21 1918-11-12 Octave J St Pierre Sink-trap.
GB220945A (en) * 1923-08-23 1925-11-19 Rudolf Hermann Heinrich Geffck Improvements in or relating to electric alarm devices
US1809935A (en) * 1928-07-30 1931-06-16 Abraham M Herzmark Coffee urn bag
US2100951A (en) * 1935-09-05 1937-11-30 Willie F Glass Filter
US2286434A (en) * 1939-11-14 1942-06-16 Myers Bruce Filter
US2416524A (en) * 1943-10-16 1947-02-25 Du Pont Composite filtering medium and method of filtering
US3067504A (en) * 1959-06-12 1962-12-11 Permanent Filter Corp Method of making a filter sock
US3204391A (en) * 1962-12-28 1965-09-07 Schwab Louis Air filtration

Cited By (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3633757A (en) * 1967-09-13 1972-01-11 Madern Jean Pierre Fluid filter
US3495713A (en) * 1969-07-02 1970-02-17 Hsu Hsin Chi Lint and thread collecting bag for electric washing machine
US3780868A (en) * 1972-04-19 1973-12-25 Dorr Oliver Inc Pressure filter having depending tubular filter elements
DE2354917A1 (en) * 1973-11-02 1975-05-07 Hoechst Ag Apparatus for dewatering industrial sludges
US4035304A (en) * 1974-07-05 1977-07-12 Terumo Corporation Blood filtering bag
US4058463A (en) * 1974-09-03 1977-11-15 Keene Corporation Element for filtering and separating fluid mixtures
US3984330A (en) * 1974-11-07 1976-10-05 Nichols Louis B Washing machine drain filter
US3959138A (en) * 1974-11-07 1976-05-25 Nichols Louis B Washing machine drain filter
US3937621A (en) * 1974-11-25 1976-02-10 Phillips Petroleum Company Filter bag cuff
US4122008A (en) * 1977-02-10 1978-10-24 Eddy Allen Filtration process for separating particles from liquid coolants in lens grinding devices
US4172788A (en) * 1977-02-28 1979-10-30 Ingram Alton E Caustic chlorine filter bag
US4303519A (en) * 1978-04-14 1981-12-01 Delvecchio Evo Quick disconnect bag filter
US4250039A (en) * 1979-05-07 1981-02-10 Wire Cloth Products, Inc. Transmission filter
US4564452A (en) * 1983-12-09 1986-01-14 Sharpe Anthony N Apparatus for filtration
US4604203A (en) * 1984-09-14 1986-08-05 Minnesota Mining And Manufacturing Co. Cooking oil filtering apparatus and filter therefor
US4680117A (en) * 1985-10-18 1987-07-14 The Gainesville 1920 Corporation Yogurt separator device
US4950392A (en) * 1987-06-15 1990-08-21 Hein-Werner Corporation Filtration tank for filtering waste water used in washing mechanical components
US5202020A (en) * 1989-10-11 1993-04-13 Desjoyaux Jean L Liquid filtering device for swimming pools in particular
US5139686A (en) * 1990-10-04 1992-08-18 Gpl Partnership Method and apparatus for filtering dry cleaning solvent
US5156661A (en) * 1992-01-31 1992-10-20 Pall Corporation Bag filter with thermoplastic tape-sealed sewn seam
US5217610A (en) * 1992-03-18 1993-06-08 Elite Commercial & Industrial, Inc. Apparatus for removing metal particles from a liquid and method for making same
US5695651A (en) * 1993-07-13 1997-12-09 Apoc Limited Inlet screen
US5626744A (en) * 1995-03-31 1997-05-06 Kimberly-Clark Corporation Pressure sensitive extended life filter
US6261445B1 (en) 1997-04-16 2001-07-17 Earl Roger Singleton Temporary silt guard for sewer inlet
US6428693B2 (en) 1997-04-16 2002-08-06 Earl Roger Singleton Temporary silt guard for sewer inlet
US6334953B1 (en) 1999-11-24 2002-01-01 Roger Singleton Storm water drainage filter assembly
US6840385B2 (en) * 2000-12-19 2005-01-11 Sidney Goldman Lateral dispersion filter basket
US6651825B2 (en) * 2001-06-06 2003-11-25 Fresh Creek Technologies, Inc. Disposable net assemblies for apparatus for collecting floating debris
US20040096637A1 (en) * 2001-06-06 2004-05-20 Fresh Creek Technologies, Inc. Disposable net assemblies for apparatus for collecting floating debris
US6866153B2 (en) 2001-06-06 2005-03-15 Fresh Creek Technologies, Inc. Disposable net assemblies for apparatus for collecting floating debris
US20030070980A1 (en) * 2001-10-11 2003-04-17 Ray Michael Dean Biodegradable disposable bag for cement waste
US20040105741A1 (en) * 2003-07-14 2004-06-03 Pat Inglese Wet (plastic) and dry concrete reclamation/disposal device
US8113220B2 (en) 2003-07-14 2012-02-14 Pat Inglese Wet (plastic) and dry concrete disposal device
US20080251471A1 (en) * 2003-07-14 2008-10-16 Pat Inglese Wet (plastic) and dry concrete reclamation/disposal device
US7753090B2 (en) 2005-10-18 2010-07-13 Danny Earp Blasting fluid effluent containment device
US20090314715A1 (en) * 2007-10-04 2009-12-24 Conwell Michael K Method of dewatering solids laden liquids utilizing a reusable filter element
US8070960B2 (en) * 2007-10-04 2011-12-06 Conwell Michael K Method of dewatering solids laden liquids utilizing a reusable filter element
US9149743B2 (en) 2007-10-04 2015-10-06 Michael K. Conwell Apparatus for dewatering solids-laden liquids
US8673141B2 (en) * 2008-03-14 2014-03-18 Ibs Filtran Kunststoff/Metallerzeugnisse Gmbh Oil filter device
US20140197085A1 (en) * 2008-03-14 2014-07-17 Ibs Filtran-Kunststoff-/Metallerzeugnisse Gmbh Oil filter device
US20090230049A1 (en) * 2008-03-14 2009-09-17 Ibs Filtran-Kunststoff-/Metallerzeugnisse Gmbh Oil filter device
US9586725B2 (en) 2014-03-20 2017-03-07 Danny Earp Effluent container for cleaning heat exchangers
US10661204B2 (en) 2015-04-15 2020-05-26 REMARK-KAYSER Sp. z.o.o. Filter bag sealing method and a filter bag sealed therewith

Also Published As

Publication number Publication date
GB1205977A (en) 1970-09-23
DE1611043B2 (en) 1974-06-12
DE1611043C3 (en) 1979-07-19
DE1611043A1 (en) 1970-10-08

Similar Documents

Publication Publication Date Title
FI71880C (en) Dimensional stable filter design and process for its manufacture.
US6585893B2 (en) Concentrically-arranged, multi-sleeve bag-type filter element assembly
US3165473A (en) Corrugated filter unit
US4495072A (en) Filter screen device
US3827562A (en) Filtering device
US3206178A (en) Diffuser tube
US3509698A (en) Filter arrangement
US3083834A (en) Filter unit
US3231089A (en) Filters
US3100190A (en) Pressure filter and filter tube therefor
US4495074A (en) Method and apparatus for filtration using ferromagnetic metal fibers
EP0365887A2 (en) Filter cartridge for a liquid-filtration apparatus, especially for water filters
CA1315711C (en) Flexible filter bag and method of fabrication
US2609932A (en) Fluid purifying device
US2199258A (en) Dehydrator
US5484474A (en) Inverted dome arterial filter
US1833315A (en) Filtering medium
US3146195A (en) Water purification and conditioning system for lobster tank
EP0306231B1 (en) Flexible filter element employing filtering sheets formed with bypass openings
US3080977A (en) Drier fitting and assembly
US2782933A (en) Flocked filter media
US3155612A (en) Fluid distributor for tanks
US4639314A (en) Fine bubble diffuser and diffuser system having filtered blow-down tube
US4588500A (en) Fuel filter and dehydrator
US4221670A (en) Filter for liquids

Legal Events

Date Code Title Description
AS Assignment

Owner name: MARINE MIDLAND BANK, N.A. 140 BROADWAY, NEW YORK,

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AMERICAN FELT & FILTER COMPANY, INC.;REEL/FRAME:004188/0959

Effective date: 19830426