US3407633A - Washing machine filter - Google Patents

Washing machine filter Download PDF

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Publication number
US3407633A
US3407633A US580681A US58068166A US3407633A US 3407633 A US3407633 A US 3407633A US 580681 A US580681 A US 580681A US 58068166 A US58068166 A US 58068166A US 3407633 A US3407633 A US 3407633A
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United States
Prior art keywords
filter
machine
washing
chamber
pump
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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
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US580681A
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English (en)
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Giambertoni Natale
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Individual
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Individual
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Publication date
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Publication of US3407633A publication Critical patent/US3407633A/en
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/10—Filtering arrangements

Definitions

  • a filter is positioned between the tub outlet and drain of a washing machine.
  • the filter may be removed for cleansing through an opening formed in the upper portion of the washing machine body.
  • This invention relates to a washingmachine and more particularly to the installation of a filter in the body of a cloth-washing machine or a dish-washing machine.
  • washing machines are equipped with a filter whose function is to filter the water ejected from the washing tub of a washing machine by means of a drain pump which is generally positioned beneath the lowest point of the tub, to which it is connected by a drain pipe.
  • the filter is an integral part of the pump body or, more frequently, it is serially placed in the drain pipe and can be installed in (or, alternatively, removed from) the machine through a perforation formed through the wall of the duct, whereat it is affixed with locking means: it is usual, anyhow, to place the filter beneath the lowest point of the washing tubof the machine and can be accessed to and removed only through an opening formed through the lower portion of the washing machine body.
  • An object of the present invention is to provide a washing machine wherein the filter is so positioned as to be removable even during progress of a washing step, or, anyhow, when the washing tub of the machine is filled with water, without suliering even from slightest water oozings.
  • Another object is to provide means enabling the filter to be removed through an opening formed in the upper portion of the washing machine body, above the highest level water can reach in the machine.
  • a further object is to do away with intricate hydraulic seals on the filter, so that the latter can either be removed or replaced in its operative position, rapidly and conveniently, even by untrained individuals.
  • a washing machine comprising a washing tub, a drain pump, a drain pipe connecting said washing tub to said pump, and a movable filter positioned between said tub and said pump for monitoring the water flow sucked by the pump as said pump is dumping the water from the washing tub
  • said machine being characterized by comprising a tubular chamber extending from bottom to top in said machine, said chamber having near its bottom end a seating for positioning said filter, the top end of said chamber being open and accessible through an opening formed through the machine body and located above the maximum level the water is to attain in the washing tub when the machine is in normal operational run, the cross-sectional area of said chamber and the area of said opening being at least equal to the filters cross-sectional area
  • said drain pipe comprising two duct sections, the first of which connects the washing tub with said chamber above said filter seating, a second section connecting said pump, with the duct at the lowest point of said seating, the filter, having solid therewith, an end of a rod whose length is substantially equal to the length
  • FIGURE 1 is a diagrammatical front view, partially in cross-section, of an embodiment of the machine.
  • FIGURE 2 shows, also in diagrammatical front view, partly in section, an alternative embodiment of the machine.
  • the two machines shown, FIGS. l and 2 are clothwashing machines having a horizontal basket and comprise a washing tub 1, within which a horizontal-axis tub has been shown in phantom, and a centrifugal pump 10 whose delivery end is connected to the end of a flexible drain pipe 11.
  • the machine shown in FIG. 1 comprises a cylindrical tubular chamber 8 having vertical walls, and whose bottom portion 4 is shaped so as to house a filter 5 of conventional make.
  • the chamber 8 is extended upwards so as to reach the upper horizontal surface of the machine body and has an open upper end which can be accessed to through an opening formed through said body.
  • the cross-sectional area of the chamber 8 above the portion 4 is very much the same as the maximum cross-sectional area of the filter 5, to which a stifi rod 6 is afiixed having at its own upper end a handle or knob 7.
  • the latter when the filter 5 is positioned in its seating 4, is housed on the opening formed in the machine body.
  • the washing tub I is connected to the chamber 8, above the filter seating 4, via a duct 2 having a flexible section 3.
  • the lower portion of the chamber 8, downstream of the filter 5 (see FIG. 1) is connected to the suction side of the pump 10- via a drain duct 9.
  • the machine moreover, is equipped with all those component parts and devices which are conventional and required for its operation and which. are not described and shown herein for the sake of simplicity, as they are (a unnecessary details to the end of a proper understanding of the invention.
  • the pump 10 When, on completion of a washing cycle, the pump 10 dumps, out of the tub 1, the Water which has been used for said washing cycle, delivering it through the tube 11, said water comes to the tub pump through the conduits 2, 3 and 9 after having been passed through the filter 5.
  • the filter On completion of the washing cycle, or also during the performance of a washing step, the filter can be removed from the chamber 8 so as to clean it, without having to suffer from spillage of water from the machine, or Without discontinuing the operation thereof.
  • the housewife using the machine is induced to clean the filter frequently.
  • the machine shown in FIG. 2 differs from the one of FIG. 1 only in that the upper portion of the chamber 8 is bent and its upper end can be accessed to through a window formed in the front wall of the machine, the window being closed by a door 12. It should be noticed that it is essential to position said uppermost open end of the chamber 8' above the maximum level the water may attain in the tub 1 during the operation of the machine.
  • the filter 5 (shown seated in a housing 4' formed in the lower portion of the chamber 8) has, solid therewith, a flexible rod 6 whose upper end is just behind the door 12.
  • a washing machine comprising a washing tub, a drain pump, a drain pipe connecting said washing tab to said pump, and a movable filter positioned between said tub and said pump for monitoring the water flow sucked by the pump as said pump is dumping water from the washing tub, said machine comprising a tubular chamber extending from bottom to top in said machine, said chamber having near its bottom end a seating for positioning said filter, the top end of said chamber being open and accessible through an opening formed through the machine body and located above the maximum level the water is to attain in.
  • said drain pipe comprising two duct sections, the first of which connects the washing tub with said chamber above said filter seating, a second section connecting said pump with the duct substantially at the lowest point of said seating, the filter having, solid therewith, an end of a rod whose length is substantially equal to the length of said chamber.
  • a Washing machine according to claim 1, wherein said opening formed in the machine body is closed by a door.
  • a washing machine according to claim 1, wherein said rod has a handle which comes in registry with said opening when the filter is housed in its own seating.
  • a washing machine according to claim 1, wherein said chamber is cylindrical with vertical walls.
  • a washing machine wherein said rod is stifi.
  • a washing machine wherein at least the upper portion of said chamber is curved and its open end is in registry with, and can be accessed through, an opening formed through a sidewall of said machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Details Of Reciprocating Pumps (AREA)
US580681A 1966-01-12 1966-09-20 Washing machine filter Expired - Lifetime US3407633A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1333366 1966-01-12

Publications (1)

Publication Number Publication Date
US3407633A true US3407633A (en) 1968-10-29

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ID=11144379

Family Applications (1)

Application Number Title Priority Date Filing Date
US580681A Expired - Lifetime US3407633A (en) 1966-01-12 1966-09-20 Washing machine filter

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US (1) US3407633A (es)
ES (1) ES335977A1 (es)
SE (1) SE304247B (es)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4125003A (en) * 1976-09-09 1978-11-14 White-Westinghouse Corporation Sump strainer for tumbler washing machine
US4566970A (en) * 1983-05-05 1986-01-28 Industrie Zanussi S.P.A. Washing machine filter
US4911197A (en) * 1989-05-02 1990-03-27 Estep William E Drain standpipe
US4930552A (en) * 1989-05-02 1990-06-05 Estep William E Drain standpipe
EP1201812A1 (en) * 2000-10-31 2002-05-02 CANDY S.p.A. A filtering unit for a washing machine
US20070095110A1 (en) * 2005-10-31 2007-05-03 General Electric Company Dry cleaning solvent filter
US20140060122A1 (en) * 2010-11-15 2014-03-06 Electrolux Home Products Corporation N.V. Laundry Machine
US20240173655A1 (en) * 2022-11-25 2024-05-30 Samsung Electronics Co., Ltd. Microplastic filter for washing machines or other appliances

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US495998A (en) * 1893-04-25 perkins
US2087571A (en) * 1933-02-13 1937-07-20 Apex Electrical Mfg Co Laundry machine
US2621797A (en) * 1947-12-13 1952-12-16 Maytag Co Self-cleaning filter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US495998A (en) * 1893-04-25 perkins
US2087571A (en) * 1933-02-13 1937-07-20 Apex Electrical Mfg Co Laundry machine
US2621797A (en) * 1947-12-13 1952-12-16 Maytag Co Self-cleaning filter

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4125003A (en) * 1976-09-09 1978-11-14 White-Westinghouse Corporation Sump strainer for tumbler washing machine
US4566970A (en) * 1983-05-05 1986-01-28 Industrie Zanussi S.P.A. Washing machine filter
US4911197A (en) * 1989-05-02 1990-03-27 Estep William E Drain standpipe
US4930552A (en) * 1989-05-02 1990-06-05 Estep William E Drain standpipe
EP1201812A1 (en) * 2000-10-31 2002-05-02 CANDY S.p.A. A filtering unit for a washing machine
US20070095110A1 (en) * 2005-10-31 2007-05-03 General Electric Company Dry cleaning solvent filter
US7681419B2 (en) * 2005-10-31 2010-03-23 General Electric Company Dry cleaning solvent filter
US20140060122A1 (en) * 2010-11-15 2014-03-06 Electrolux Home Products Corporation N.V. Laundry Machine
US9637855B2 (en) * 2010-11-15 2017-05-02 Electrolux Home Products Corporation N.V. Front loading laundry machine having bellows
US20240173655A1 (en) * 2022-11-25 2024-05-30 Samsung Electronics Co., Ltd. Microplastic filter for washing machines or other appliances
US12427453B2 (en) * 2022-11-25 2025-09-30 Samsung Electronics Co., Ltd. Microplastic filter for washing machines or other appliances

Also Published As

Publication number Publication date
SE304247B (es) 1968-09-23
ES335977A1 (es) 1967-12-16

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