WO1994004245A1 - Filter jug - Google Patents
Filter jug Download PDFInfo
- Publication number
- WO1994004245A1 WO1994004245A1 PCT/GB1993/001685 GB9301685W WO9404245A1 WO 1994004245 A1 WO1994004245 A1 WO 1994004245A1 GB 9301685 W GB9301685 W GB 9301685W WO 9404245 A1 WO9404245 A1 WO 9404245A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- compartment
- jug
- filter
- liquid
- chamber
- Prior art date
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims description 6
- 239000004753 textile Substances 0.000 claims description 4
- 229920002994 synthetic fiber Polymers 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000001914 filtration Methods 0.000 description 4
- 239000003610 charcoal Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000003550 marker Substances 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 241001122767 Theaceae Species 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
- C02F1/003—Processes for the treatment of water whereby the filtration technique is of importance using household-type filters for producing potable water, e.g. pitchers, bottles, faucet mounted devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
- B01D24/04—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being clamped between pervious fixed walls
- B01D24/042—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being clamped between pervious fixed walls the filtering material being held in a flexible porous bag
-
- 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
- B01D29/085—Funnel filters; Holders therefor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/006—Cartridges
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2307/00—Location of water treatment or water treatment device
- C02F2307/04—Location of water treatment or water treatment device as part of a pitcher or jug
Definitions
- This invention relates to a filter jug of the type which includes a water filter medium and to a container for the filter medium to be used in the jug.
- a filter jug of the type which includes a water filter medium and to a container for the filter medium to be used in the jug.
- Such jugs are filled with water, e.g. from a domestic tap and the water is passed through via the filter medium so as to improve the quality of the water for drinking.
- the filter medium is typically housed in a moulded canister having perforations for the passage of water therethrough, the canister being received in a suitably shaped chamber.
- the filter medium needs to be replaced periodically and the used filter in its canister must be discarded.
- GB-A-606923 discloses a portable filter unit comprising a container of pervious fabric having an upper compartment for the impure water and a lower compartment for the filtered water, the compartments being separated by a filter through which the water flows.
- GB-A-654012 discloses a filtering device comprising a reservoir for filtered liquid, an inner perforated cage within the reservoir and a removable container of granulated filter medium inside the cage.
- GB-A-7102035 discloses a filtering device in the form of a beaker having a permeable base and a packing of active carbon between two perforated surfaces located near the base.
- GB-A-2192808 discloses a filter to remove impurities from water to transport live fish. It comprises a column with an inlet near the base and an outlet near the top, the column containing arcuate apertured channels containing sausage-like filter bags containing particulate filtration medium.
- US-A-4094779 discloses a filtration system utilising an inverted upper chamber mounted on a stand above a lower chamber and a filter containing active carbon disposed between the two filters.
- US-A-4605499 discloses a filter unit comprising a pouch containing filter medium and means to suspend the pouch in the mouth of a container to receive water.
- a filter jug to contain water or other liquid, the jug comprising a first compartment to receive liquid from a supply, a second compartment to hold filtered liquid to be poured from an outlet from the second compartment, a filter chamber through which liquid must pass from the first compartment to the second, the filter chamber containing a filter medium, and the filter medium being present in a flexible bag having a liquid-pervious wall.
- the bag wall is made of textile or synthetic material and is made of the same material throughout so that the bag can be inserted into the chamber in any orientation.
- the filter chamber includes deformations to engage or support the flexible bag.
- the chamber includes a removable wall, typically the top, and having a projection extending into the chamber and shaped to urge the flexible bag against the other walls of the chamber so that there are no gaps through which liquid can bypass the filter medium.
- the filter medium is adapted to remove solids and/or gases from the liquid to be treated.
- the first compartment is a removable inner housing dimensioned for reception in the upper part of the second compartment.
- the filter chamber depends from the underside of the first compartment.
- the invention provides a container containing a particulate filter medium for use in a filter jug characterised in that the container comprises a flexible bag having a wall of liquid-pervious material.
- the bag is formed from a single blank of substantially rectangular form which has been folded along the transverse centre axis and sealed along its margins and at its overlapping edges whereby only a single transverse seal is formed so that the flexible bag may be compacted in a filter chamber without overlapping wall portions of the bag which would restrict access of the liquid to the contained filter medium.
- means are present to record the usage of the filer medium or the passage of time since the filter medium was installed.
- the means comprises a marked rotary wheel mounted on a lid for the jug.
- Figure 1 is a side elevation of the container in assembled condition
- Figure 2 is an exploded perspective view of the container of Figure 1;
- Figure 3 is a side elevation, partly in section, of the area marked III on Figure 2;
- Figure 4 is a side elevation, partly in section, of the area marked IV on Figure 2;
- Figure 5 is a partial exploded view of another embodiment of the invention.
- Figure 6 is a plan view of the lid of the filter chamber of Figure 5.
- Figure 7 is a vertical sectional elevation of the filter chamber of the embodiment of Figure 5.
- the container comprises a juglike main housing 1.
- the housing is of rounded triangular shape as seen in plan, having a front wall 2 and a rear wall 3.
- the housing forms the second compartment of the jug.
- a top extension 4 and a parallel bottom extension 5 project from the rear wall 3 on to which the sides of a handle 6 can be engaged.
- the top of the front wall of housing 1 defines a spout 7.
- An inner housing 8 forms the first compartment and comprises a body of substantially the same shape as the main housing, but of relatively reduced height, having a flat front fa. ° ⁇ at the top of which is a flat ledge 10 having a concavely curved edge 11 which in co-operation with the spout 7 defines an outlet.
- the top of the inner housing 8 has side shoulders 12.
- the upper periphery of compartment 8 engages the upper periphery of compartment 1 when the former is positioned in the latter.
- a cylindrical extension 13 depends below a hole 14 in the floor 15 of the inner housing and defines a filter chamber or sump.
- the floor 15 has a depression 16 in the region of the hole 14, and a disc shaped lid 17 is present to fit over the hole.
- the floor 18 of the extension 13 has an upwardly-extending frustoconical column 19 in the top of which are holes 20.
- the extension 13 thus defines a chamber having a perforate region in its floor, adapted to receive a sealed flexible bag B containing a filter treatment agent.
- the bag has a water-pervious wall made of textile or like material resembling a tea bag, and contains say charcoal or like water treatment agent.
- the bag is sealed by a so called transwrap seal the effect of which is to avoid excess wall material.
- a lid 21 is dimensioned to fit over the main housing 1 by engaging the shoulders 12 on the inner housing and aligned shoulders 22 on the handle 6.
- the lid 21 has a concave front wall 23, leaving an open area to overlie the spout 7.
- a wheel 24 is mounted on an axle 25 ( Figure 4) below the lid.
- a shroud 26 is present on top of the lid, dimensioned so that only part of the wheel is exposed.
- the wheel is marked with numerals 1 to 31, corresponding to the maximum days in the month, and is used to indicate, in co-operation with a marker 26A on the shroud the day in the month which the treatment agent was last replaced. (The agent should usually be replaced monthly).
- To add the treatment agent B the lid 21 and 17 are removed, the bag B dropped in the chamber and lid 17 is replaced. Water is then run in through the housings to flush the system through. The marker is then set to the date.
- the jug is filled with water from the usual kitchen tap and then lid 21 is replaced.
- the inner housing 8 and the chamber 13 are relatively wide there is no delay in filling water and trapped air can escape via the passageway between the main housing 1 and the inner housing 8 and the spout 7.
- the jug can then be stored in the refrigerator.
- the bag B When after multiple fillings of the jug the bag B needs to be discarded, it is simple to do so, and there is no environmental problem in that the wall of the bag will decompose and the charcoal is not harmful. The amount of waste is negligible.
- the filter jug comprises a second compartment 1 which is the main housing of the jug. It is of generally oval plan shape and has the same basic plan shape as that of the inner housing first compartment 8 (see Figure 5) and is a little larger to receive the first compartment 8.
- the upper rim of the compartment 1 defines the spout 7 and has an outward rear top projection 4 which is joined to a corresponding rear bottom projection 5 by handle 6.
- An integrally formed filter chamber 13 depends from the floor 14 of the inner housing 8.
- Chamber 13 has a generally cylindrical wall tapering towards its base 31 and defines at its upper end an annular shoulder 32 to receive a lid 33 to be described below.
- the base 31 has a number of perforations 34 to allow liquid to pass out of the chamber.
- a flexible sealed bag B containing filter medium can be placed in chamber 13.
- the lid 33 is of generally oval shape and has a central hump 35 surrounding by perforations 36 to allow liquid to pass through into the chamber 13.
- An air hole 37 is also provided to aid water flow.
- the lid 33 has an annular depending peripheral flange 38 which extends into the chamber 13 and locates around shoulder 32 when the lid is in position.
- An annular projection 39 depends from the underside of the lid 33 to urge the flexible filter bag B into contact with the inner wall of chamber 13 (see Figure 7) until there are no air gaps through which water can bypass the filter medium, e.g. charcoal, in the filter bag B.
- This embodiment is used in the same way as the first.
- the wheel is marked with an arrow of increasing width and is moved each time the jug is filled, and when the arrow disappears from view (because of the shroud) the user realises the bag B needs to be replaced.
- the invention is not limited to the embodiment shown.
- a spout need not be present so that the jug is like a bottle.
- a handle may be present on the lid 33 to ease removal.
- the bag B can be used in jugs of a shape different from that shown.
- the filter chamber may be a detachable component of the jug.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Ion Exchange (AREA)
- Water Treatment By Sorption (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP94908058A EP0655938B1 (en) | 1992-08-14 | 1993-08-09 | Filter jug |
DE69306957T DE69306957D1 (en) | 1992-08-14 | 1993-08-09 | CAN WITH FILTER |
US08/387,862 US5665224A (en) | 1992-08-14 | 1993-08-09 | Filter jug |
AU47236/93A AU4723693A (en) | 1992-08-14 | 1993-08-09 | Filter jug |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB929217318A GB9217318D0 (en) | 1992-08-14 | 1992-08-14 | Container |
GB9217318.6 | 1992-08-14 | ||
GB9306303.0 | 1993-04-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994004245A1 true WO1994004245A1 (en) | 1994-03-03 |
Family
ID=10720374
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1993/001685 WO1994004245A1 (en) | 1992-08-14 | 1993-08-09 | Filter jug |
Country Status (2)
Country | Link |
---|---|
GB (2) | GB9217318D0 (en) |
WO (1) | WO1994004245A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD758529S1 (en) | 2015-01-19 | 2016-06-07 | Kx Technologies Llc | Filter cartridge with adapter for jug container |
USD765220S1 (en) | 2015-01-19 | 2016-08-30 | Kx Technologies Llc | Filter cartridge with flange end |
WO2018086746A1 (en) | 2016-11-14 | 2018-05-17 | Brita Gmbh | Liquid treatment device, method of manufacturing it and liquid treatment system |
US10307697B2 (en) | 2015-01-30 | 2019-06-04 | Kx Technologies Llc | Filter cartridge |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9407799D0 (en) * | 1994-04-20 | 1994-06-15 | Kenwood Marks Ltd | Filter jugs |
DE19819098A1 (en) | 1998-04-29 | 1999-11-11 | Brita Gmbh | Water purification device with means for indicating the exhaustion of the detergent |
WO2006003350A1 (en) * | 2004-07-02 | 2006-01-12 | Morphy Richards Limited | Liquid treatment filter |
WO2006034275A1 (en) | 2004-09-20 | 2006-03-30 | Aquarium Pharmaceuticals, Inc. | Aquarium filter assembly |
RU2666419C2 (en) * | 2015-09-22 | 2018-09-07 | Общество с ограниченной ответственностью "Акватория" | Filter cartridge |
DE202021001244U1 (en) * | 2021-04-01 | 2021-05-28 | Christoph Götz | Filter cartridge and filter bag for a water filter device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0285908A2 (en) * | 1987-04-10 | 1988-10-12 | LEIFHEIT Aktiengesellschaft | Apparatus for modifying the quality of drinking water |
EP0335066A2 (en) * | 1988-03-26 | 1989-10-04 | Brita Wasser-Filter-Systeme GmbH | Water purification device with inlet funnel |
EP0349315A1 (en) * | 1988-06-29 | 1990-01-03 | Addis Limited | Filter cartridges and filter assemblies |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB606923A (en) * | 1946-01-22 | 1948-08-23 | Richard Sydney Brownlow | Improvements relating to portable filters for liquids |
GB654012A (en) * | 1948-10-04 | 1951-05-30 | Arthur James Simpson | Improvements in or relating to filtering devices |
FR1026409A (en) * | 1949-11-14 | 1953-04-28 | Lab Fu R Adsorptionstechnik G | Filter for clarifying drinking water and other beverages |
US4094779A (en) * | 1976-12-27 | 1978-06-13 | Behrman Abraham S | Water purification means and method |
US4605499A (en) * | 1985-02-19 | 1986-08-12 | WISE Lawrence | Water filter |
GB2192808A (en) * | 1986-02-19 | 1988-01-27 | Dryden Aquaculture Ltd | Filter |
-
1992
- 1992-08-14 GB GB929217318A patent/GB9217318D0/en active Pending
-
1993
- 1993-04-08 GB GB9306303A patent/GB2269586B/en not_active Expired - Fee Related
- 1993-08-09 WO PCT/GB1993/001685 patent/WO1994004245A1/en active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0285908A2 (en) * | 1987-04-10 | 1988-10-12 | LEIFHEIT Aktiengesellschaft | Apparatus for modifying the quality of drinking water |
EP0335066A2 (en) * | 1988-03-26 | 1989-10-04 | Brita Wasser-Filter-Systeme GmbH | Water purification device with inlet funnel |
EP0349315A1 (en) * | 1988-06-29 | 1990-01-03 | Addis Limited | Filter cartridges and filter assemblies |
Non-Patent Citations (1)
Title |
---|
Patent Abstracts of Japan, Vol 10, No 85, C-336, abstract of JP, 60-220115 (KEIICHIROU YAMAZAKI), * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD758529S1 (en) | 2015-01-19 | 2016-06-07 | Kx Technologies Llc | Filter cartridge with adapter for jug container |
USD765220S1 (en) | 2015-01-19 | 2016-08-30 | Kx Technologies Llc | Filter cartridge with flange end |
USD791912S1 (en) | 2015-01-19 | 2017-07-11 | Kx Technologies Llc | Filter cartridge with flange end |
US10307697B2 (en) | 2015-01-30 | 2019-06-04 | Kx Technologies Llc | Filter cartridge |
WO2018086746A1 (en) | 2016-11-14 | 2018-05-17 | Brita Gmbh | Liquid treatment device, method of manufacturing it and liquid treatment system |
Also Published As
Publication number | Publication date |
---|---|
GB9217318D0 (en) | 1992-09-30 |
GB2269586B (en) | 1996-04-17 |
GB2269586A (en) | 1994-02-16 |
GB9306303D0 (en) | 1993-05-19 |
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