US2619231A - Universal oil filter mounting for hydraulic machine tools - Google Patents

Universal oil filter mounting for hydraulic machine tools Download PDF

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Publication number
US2619231A
US2619231A US755804A US75580447A US2619231A US 2619231 A US2619231 A US 2619231A US 755804 A US755804 A US 755804A US 75580447 A US75580447 A US 75580447A US 2619231 A US2619231 A US 2619231A
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Prior art keywords
container
opening
machine
disposed
reservoir
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Expired - Lifetime
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US755804A
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Jr Olney J Abbott
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COLONIAL BROACH CO
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COLONIAL BROACH CO
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Priority to US755804A priority Critical patent/US2619231A/en
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Publication of US2619231A publication Critical patent/US2619231A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N39/00—Arrangements for conditioning of lubricants in the lubricating system
    • F16N39/06—Arrangements for conditioning of lubricants in the lubricating system by filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13—Supported filter elements
    • B01D29/15—Supported filter elements arranged for inward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13—Supported filter elements
    • B01D29/15—Supported filter elements arranged for inward flow filtration
    • B01D29/21—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
    • B01D29/58—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection arranged concentrically or coaxially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • B01D35/027—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks rigidly mounted in or on tanks or reservoirs
    • B01D35/0273—Filtering elements with a horizontal or inclined rotation or symmetry axis submerged in tanks or reservoirs

Definitions

  • This invention relates to hydraulic machines and more particularly to a universal oil filter mounting for such machines.
  • Figure l i a partially broken away side view of the lower portion of a hydraulic machine embodying the features of this invention
  • Fig. 2 is an enlarged cross sectional view of an oil filter taken along the line 2-2 of Fig. 1;
  • Fig. 3 is a sectional view of the structure illustrated in Fig. 1 taken along the line 33 thereof;
  • Fig. 4 is an end elevational view of the structure illustrated in Fig. 1 taken in the direction of the arrow 4 thereof.
  • the frame 5, of any suitable hydraulically operated machine includes a base 1, a portion of which forms a fluid reservoir 9 for the machine.
  • a fluid reservoir 9 for the machine.
  • an electric motor l3 which is drivingly connected, in a conventional manner, to a fluid pump [5.
  • additional pumps may be employed, either driven by the motor l3 or separate motors.
  • a generally box-shaped container element l9 Connected to the outside wall I! of the machine frame 5, is a generally box-shaped container element l9 providing a portion of a complots container or container assembly, as will hereinafter appear.
  • of the container element I9 is formed with a large rectangular opening 22 therein, and with an outturned marginal flange 23.
  • the flange 23 abuts a complemental flange portion 25 of the outside wall I! of the machine, which defines a rectangular opening 26 therein.
  • the opening 26 communicates with the fluidreservoir 9, in the base i.
  • a gasket 2'! is disposed between the adjacent faces of the container flange 23 and base flange 25, and cap screws 29 secure the flanges in sealing relation.
  • a relatively large rectangular shaped opening 30 is provided in the top wall 3
  • Ears 33 are formed at the opposite ends of the front edge of the cover 32, so as to be disposed adjacent to an upstanding flange 35 on each side wall 31 of the container IS.
  • a pivot pin 39 hingedly connects each of the cars 33 to its adjacent flange 35, so that the cover plate 32 is hingedly mounted on the upper end of the container element or portion l9, and covers the opening 35, when closed.
  • a handle 43 is provided on the extreme rear end of the cover plate 3
  • a generally rectangular shaped manifold casting on container portion 45 is disposed within the fluid reservoir 9 and has an outturned peripheral flange 41 formed around the rear edge thereof.
  • the flange 41 abuts the inner wall 2
  • provided in a bottom wall portion 53 of the manifold communicates with the fluid reservoir 9 and with the interior of the container IS.
  • a cored chamber 55 provided in the manifold is defined by the manifold inner wall 57, a top wall 59, an outer Wall 6
  • Oil filters H are illustrated in the drawings.
  • the oil filters are of a conventional type having a coarse cylindrically shaped outer screen 13 (Fig. 2) and a fine inner screen 15, which is star shaped in cross section. End plates 11 and 19 are provided at the opposite ends of the screens which are connected by screws 8
  • a male coupling member 83 extends forwardly from the front end plate 19 of each filter and is threaded into one of the openings 65 to thereby connect each filter in the wall 6
  • the upper wall 59 of the manifold chamber 55 is formed with three transversely spaced bosses 81, each of which has a tapped opening 89 therethrough.
  • One of the openings 89 is illustrated in the drawings as being connected to the pump l by means of a conduit 9
  • more than one pump may be used, and each pump which is used is connected by a conduit 9
  • the number and capacity of the pumps used depend upon the requirements of the machine, and the number of filters will vary correspondingly. Accordingly the unit herein described provides a universal mounting and oil pump intake manifold.
  • This construction will permit the filters H to be viewed through the container opening 30 and the hydraulic fluid, and if the filters are clogged or otherwise inoperable, will permit the filters to be removed through the opening 30.
  • a simple means for checking the operating of each of the filters and replacing them, is thus provided.
  • a machine having a liquid reservoir and a liquid pump disposed above said reservoir, a liquid container unit connected with said machine and having a portion thereof disposed within said reservoir and a portion thereof including a top wall disposed exteriorly of said machine, said container having an opening adjacent the bottom thereof disposed within said reservoir, establishing liquid communication between the reservoir and the container, said container having a manifold within the portion thereof disposed in said reservoir provided with at least one opening connectable to said pump, conduit means connecting said manifold opening to said pump, said manifold having at least one opening disposed below the liquid level in said reservoir and container for connection to a filter disposed in said container, a filter connected with said manifold opening and projecting therefrom into the portion of said container disposed exteriorly of said machine, said exteriorly disposed container top wall including an openable cover disposed above the liquid level within said container to permit removal, installation and insp ction of said filter within said container, whereby a filter may be easily removed and inspected.
  • a machine having wall portion forming a liquid reservoir, a liquid pump disposed above the liquid level in said reservoir, one of said wall portions having an opening therein, a liquid container unit having a portion thereof extending through said opening into said reservoir and a portion thereof disposed exteriorly of said opening and said machine, means conn cting said container unit to said machine wall portion, the portion of said container disposed within said machine reservoir having an opening therein adjacent the bottom thereof establishing liquid communication between the reservoir and the container, said container having a manifold in the interiorly disposed portion thereof provided with at least one opening connectable to said pump and at least one opening for the reception of a filter disposed within said container, the exteriorly disposed portion of said container having an opening therein disposed adjacent the top thereof and above the liquid level in said container, and cover means for closing said opening and movable relative thereto to permit easy removal, installation and inspection of a filter disposed within said container and connected with said manifold opening.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

Description

Nov. 25, 1952 o. J. ABBOTT, JR
UNIVERSAL OIL FILTER MOUNTING FOR HYDRAULIC MACHINE TOOLS 2 SHEETS-SHEET 1 Filed June 19, 1947 INVENTOR. 0/72? Jfl ioff T];-
W I A NOV. 25, 1952 O ABBOTT, JR 2,619,231
UNIVERSAL OIL FILTER MOUNTING FOR HYDRAULIC MACHINE TOOLS Filed June 19, 1947 2 SHEETS-SHEET 2 L g I INVENTOR.
- 4; 01m Try/5M1.)
7' ORA Z761 Patented Nov. 25, 1952 UNIVERSAL OIL FILTER MOUNTING FOR HYDRAULIC MACHINE TOOLS Olney J. Abbott, In, Detroit, Mich., assignor to Colonial Broach Company, Township of Warren, Mich., a corporation of Delaware Application June 19, 1947, Serial No. 755,804
2 Claims.
This invention relates to hydraulic machines and more particularly to a universal oil filter mounting for such machines.
It is an object of this invention to provide a universal mounting for the oil filter employed in hydraulically operated machines, which mounting is adapted for use on various sizes and types of machines, regardless of the amount of oil which must be pumped in order to operate the machines.
It is a further object of this invention to provide a universal oi1 fllter mounting of the aforementioned type which is connected to the oil reservoir of a hydraulic machine, and which has a container portion which extend outwardly beyond the outline of the machine so as to provide an exteriorly accessible reservoir portion having a covered opening therein which permits the oil filters of the machine to be viewed and removed, from the exterior of the machine.
It is a further object of the invention to provide an oil filter mounting of the aforementioned type, having a manifold therein, which is communicable with the oil reservoir through one or more oil filters, and which is connectible to one or more oil pumps of the machine, on which it is mounted.
These and other objects of this invention will become apparent from the following detailed description taken in conjunction with the accompanying drawings in which:
Figure l i a partially broken away side view of the lower portion of a hydraulic machine embodying the features of this invention;
Fig. 2 is an enlarged cross sectional view of an oil filter taken along the line 2-2 of Fig. 1;
Fig. 3 is a sectional view of the structure illustrated in Fig. 1 taken along the line 33 thereof; and
Fig. 4 is an end elevational view of the structure illustrated in Fig. 1 taken in the direction of the arrow 4 thereof.
Referring now to the drawings, it will be seen that the frame 5, of any suitable hydraulically operated machine, includes a base 1, a portion of which forms a fluid reservoir 9 for the machine. Above the fluid reservoir 9, and mounted on a plate I I, forming the upper wall of the base 1, is an electric motor l3 which is drivingly connected, in a conventional manner, to a fluid pump [5. It will be understood that, as is common, additional pumps may be employed, either driven by the motor l3 or separate motors.
Connected to the outside wall I! of the machine frame 5, is a generally box-shaped container element l9 providing a portion of a complots container or container assembly, as will hereinafter appear. The inner wall 2| of the container element I9 is formed with a large rectangular opening 22 therein, and with an outturned marginal flange 23. The flange 23 abuts a complemental flange portion 25 of the outside wall I! of the machine, which defines a rectangular opening 26 therein. The opening 26 communicates with the fluidreservoir 9, in the base i. A gasket 2'! is disposed between the adjacent faces of the container flange 23 and base flange 25, and cap screws 29 secure the flanges in sealing relation.
A relatively large rectangular shaped opening 30 is provided in the top wall 3| of the container element or portion 19, and a cover plate 32 is provided for covering the opening 30. Ears 33 are formed at the opposite ends of the front edge of the cover 32, so as to be disposed adjacent to an upstanding flange 35 on each side wall 31 of the container IS. A pivot pin 39 hingedly connects each of the cars 33 to its adjacent flange 35, so that the cover plate 32 is hingedly mounted on the upper end of the container element or portion l9, and covers the opening 35, when closed. A handle 43 is provided on the extreme rear end of the cover plate 3| to facilitate raising of the same.
A generally rectangular shaped manifold casting on container portion 45 is disposed within the fluid reservoir 9 and has an outturned peripheral flange 41 formed around the rear edge thereof. The flange 41 abuts the inner wall 2| of the container element or portion l3, and is secured thereto by cap screws 49 so as to form the complete container or container unit with a portion disposed within the reservoir and a portion disposed exteriorly ofthe outline of the machine. An opening 5| provided in a bottom wall portion 53 of the manifold communicates with the fluid reservoir 9 and with the interior of the container IS. A cored chamber 55 provided in the manifold is defined by the manifold inner wall 57, a top wall 59, an outer Wall 6| and suitable end walls. The manifold outer wall 6|. which separates the manifold chamber 55 from the interior of the container element or portion I9, is provided, adjacent its lower edge, with three transversely spaced, tapped apertures 65, and with two tapped apertures 61, disposed above the apertures 65. The apertures 67 and connect the interior of the manifold chamber 55 with the interior of the container element or portion I9 so that fluid may flow through the opening into the manifold chamber.
Oil filters H, are illustrated in the drawings,
as being threaded into the apertures 65. The oil filters are of a conventional type having a coarse cylindrically shaped outer screen 13 (Fig. 2) and a fine inner screen 15, which is star shaped in cross section. End plates 11 and 19 are provided at the opposite ends of the screens which are connected by screws 8|. A male coupling member 83 extends forwardly from the front end plate 19 of each filter and is threaded into one of the openings 65 to thereby connect each filter in the wall 6|. While three filers H are illustrated as being connected in the openings 65, with the opening 61 plugged by means of plugs 85, it will be appreciated that any desired number, up to five, may be employed, depending on'the flow requirements of the machine, and that the remaining apertures 61 or 65 must be plugged. In this way any desired number of the openings may connect the interior of the chamber IS with the manifold chamber 55 through the filter, or filters, H, depending upon the machine on which the mechanism is mounted, and the amount of oil which is pumped from the reservoir.
The upper wall 59 of the manifold chamber 55 is formed with three transversely spaced bosses 81, each of which has a tapped opening 89 therethrough. One of the openings 89 is illustrated in the drawings as being connected to the pump l by means of a conduit 9|, while the other two openings are plugged by plugs 92. However, more than one pump may be used, and each pump which is used is connected by a conduit 9| and flare nut 92 in one of the openings 89. The number and capacity of the pumps used depend upon the requirements of the machine, and the number of filters will vary correspondingly. Accordingly the unit herein described provides a universal mounting and oil pump intake manifold. This construction will permit the filters H to be viewed through the container opening 30 and the hydraulic fluid, and if the filters are clogged or otherwise inoperable, will permit the filters to be removed through the opening 30. A simple means for checking the operating of each of the filters and replacing them, is thus provided.
What is claimed is:
1. A machine having a liquid reservoir and a liquid pump disposed above said reservoir, a liquid container unit connected with said machine and having a portion thereof disposed within said reservoir and a portion thereof including a top wall disposed exteriorly of said machine, said container having an opening adjacent the bottom thereof disposed within said reservoir, establishing liquid communication between the reservoir and the container, said container having a manifold within the portion thereof disposed in said reservoir provided with at least one opening connectable to said pump, conduit means connecting said manifold opening to said pump, said manifold having at least one opening disposed below the liquid level in said reservoir and container for connection to a filter disposed in said container, a filter connected with said manifold opening and projecting therefrom into the portion of said container disposed exteriorly of said machine, said exteriorly disposed container top wall including an openable cover disposed above the liquid level within said container to permit removal, installation and insp ction of said filter within said container, whereby a filter may be easily removed and inspected.
2. A machine having wall portion forming a liquid reservoir, a liquid pump disposed above the liquid level in said reservoir, one of said wall portions having an opening therein, a liquid container unit having a portion thereof extending through said opening into said reservoir and a portion thereof disposed exteriorly of said opening and said machine, means conn cting said container unit to said machine wall portion, the portion of said container disposed within said machine reservoir having an opening therein adjacent the bottom thereof establishing liquid communication between the reservoir and the container, said container having a manifold in the interiorly disposed portion thereof provided with at least one opening connectable to said pump and at least one opening for the reception of a filter disposed within said container, the exteriorly disposed portion of said container having an opening therein disposed adjacent the top thereof and above the liquid level in said container, and cover means for closing said opening and movable relative thereto to permit easy removal, installation and inspection of a filter disposed within said container and connected with said manifold opening.
OLNEY J. ABBOTT, JR.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 385,666 Hadley July 3, 1888 694,440 Stair Mar. 4, 1902 776,094 Smith Nov. 29, 1904 1,044,601 Thiem Nov. 19, 1912 1,218,738 Zahm Mar. 13, 1917 1,761,940 Shutts June 3, 1930 1,798,950 Morrison Mar. 31, 1931 2,365,074 Harvuot Dec. 12, 1944 2,390,494 Briggs et a1 Dec. 11, 1945 2,394,076 Kisch Feb. 5, 1946 2,396,927 Nelson et a1 Mar. 19, 1946 2,401,039 Bauer May 28, 1946 2,419,501 Pinto Apr. 22, 1947 2,422,647 Vokes June 17, 1947 2,425,848 Vawter Aug. 19, 1947 2,531,752 Thomas Nov. 28, 1950 2,559,614 I-Iapman July 10, 1951 FOREIGN PATENTS Number Country Date 21,452 Great Britain Oct. 6, 1904 494,565 Great Britain Oct. 27, 1938
US755804A 1947-06-19 1947-06-19 Universal oil filter mounting for hydraulic machine tools Expired - Lifetime US2619231A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2795332A (en) * 1953-07-09 1957-06-11 Purolator Products Inc Apparatus for filtering contaminantcontaining coating liquids
US2837214A (en) * 1954-07-15 1958-06-03 Bendix Aviat Corp Filter-demulsifier assembly
US3160587A (en) * 1958-12-04 1964-12-08 Robert W Waring Filtering system
DE1254599B (en) * 1960-12-12 1967-11-23 Julius Lawrence Englesberg Immersion filter with a centrifugal pump that feeds a Truebe
FR2577435A1 (en) * 1985-02-15 1986-08-22 Filtertek Inc FLUID FILTER ASSEMBLY, FILTRATION CARTRIDGE, AND FILTER FOR FLUID CIRCULATION SYSTEM
US4950392A (en) * 1987-06-15 1990-08-21 Hein-Werner Corporation Filtration tank for filtering waste water used in washing mechanical components
US20040256300A1 (en) * 2001-10-01 2004-12-23 Jacques Braun Filtering structure for swimming pool

Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US385666A (en) * 1888-07-03 Island
US694440A (en) * 1901-06-20 1902-03-04 Albert B Bohon Strainer for down-spouts.
GB190421452A (en) * 1904-10-06 1904-11-10 United Asbestos Company Ltd An Improved Waste Oil Filter
US776094A (en) * 1903-03-13 1904-11-29 William Blackburn Smith Filter device.
US1044601A (en) * 1912-02-10 1912-11-19 Louis Thiem Catch-strainer for down-spouts.
US1218738A (en) * 1917-01-26 1917-03-13 Zahm Mfg Company Filter.
US1761940A (en) * 1928-05-07 1930-06-03 Gen Motors Res Corp Oil-filtering means
US1798950A (en) * 1928-05-05 1931-03-31 Gen Motors Corp Self-washing oil filter
GB494565A (en) * 1938-06-10 1938-10-27 Alexander Denholm Improvements in filtering devices
US2365074A (en) * 1941-12-31 1944-12-12 Sf Bowser & Co Inc Strainer
US2390494A (en) * 1943-10-27 1945-12-11 Briggs Clarifier Company Clarifying apparatus
US2394076A (en) * 1946-02-05 Combined strainer and sump
US2396927A (en) * 1943-04-13 1946-03-19 Plant Choate Mfg Co Inc Oil tank
US2401039A (en) * 1942-02-14 1946-05-28 Briggs Filtration Company Filtering device
US2419501A (en) * 1945-01-02 1947-04-22 Armie A Pinto Debris accumulating and separating trap for drain pipes
US2422647A (en) * 1939-07-19 1947-06-17 Vokes Ltd Filter
US2425848A (en) * 1945-04-02 1947-08-19 Vawter Dale Portable flushing and filtering unit
US2531752A (en) * 1946-10-26 1950-11-28 Economy Pumps Inc Pumping apparatus for sumps
US2559614A (en) * 1944-10-12 1951-07-10 Hannah J Hapman Apparatus for conditioning, cleaning, and circulating cooling liquids

Patent Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2394076A (en) * 1946-02-05 Combined strainer and sump
US385666A (en) * 1888-07-03 Island
US694440A (en) * 1901-06-20 1902-03-04 Albert B Bohon Strainer for down-spouts.
US776094A (en) * 1903-03-13 1904-11-29 William Blackburn Smith Filter device.
GB190421452A (en) * 1904-10-06 1904-11-10 United Asbestos Company Ltd An Improved Waste Oil Filter
US1044601A (en) * 1912-02-10 1912-11-19 Louis Thiem Catch-strainer for down-spouts.
US1218738A (en) * 1917-01-26 1917-03-13 Zahm Mfg Company Filter.
US1798950A (en) * 1928-05-05 1931-03-31 Gen Motors Corp Self-washing oil filter
US1761940A (en) * 1928-05-07 1930-06-03 Gen Motors Res Corp Oil-filtering means
GB494565A (en) * 1938-06-10 1938-10-27 Alexander Denholm Improvements in filtering devices
US2422647A (en) * 1939-07-19 1947-06-17 Vokes Ltd Filter
US2365074A (en) * 1941-12-31 1944-12-12 Sf Bowser & Co Inc Strainer
US2401039A (en) * 1942-02-14 1946-05-28 Briggs Filtration Company Filtering device
US2396927A (en) * 1943-04-13 1946-03-19 Plant Choate Mfg Co Inc Oil tank
US2390494A (en) * 1943-10-27 1945-12-11 Briggs Clarifier Company Clarifying apparatus
US2559614A (en) * 1944-10-12 1951-07-10 Hannah J Hapman Apparatus for conditioning, cleaning, and circulating cooling liquids
US2419501A (en) * 1945-01-02 1947-04-22 Armie A Pinto Debris accumulating and separating trap for drain pipes
US2425848A (en) * 1945-04-02 1947-08-19 Vawter Dale Portable flushing and filtering unit
US2531752A (en) * 1946-10-26 1950-11-28 Economy Pumps Inc Pumping apparatus for sumps

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2795332A (en) * 1953-07-09 1957-06-11 Purolator Products Inc Apparatus for filtering contaminantcontaining coating liquids
US2837214A (en) * 1954-07-15 1958-06-03 Bendix Aviat Corp Filter-demulsifier assembly
US3160587A (en) * 1958-12-04 1964-12-08 Robert W Waring Filtering system
DE1254599B (en) * 1960-12-12 1967-11-23 Julius Lawrence Englesberg Immersion filter with a centrifugal pump that feeds a Truebe
FR2577435A1 (en) * 1985-02-15 1986-08-22 Filtertek Inc FLUID FILTER ASSEMBLY, FILTRATION CARTRIDGE, AND FILTER FOR FLUID CIRCULATION SYSTEM
US4950392A (en) * 1987-06-15 1990-08-21 Hein-Werner Corporation Filtration tank for filtering waste water used in washing mechanical components
US20040256300A1 (en) * 2001-10-01 2004-12-23 Jacques Braun Filtering structure for swimming pool
US20070187311A1 (en) * 2001-10-01 2007-08-16 Piscines Waterair S.A. And Procopi S.A. Filtering structure for swimming pool
US7407575B2 (en) * 2001-10-01 2008-08-05 Piscines Waterair S.A. Filtering structure for swimming pool

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