Patent DE2829440A1 successfully refreshed from Google Patents.
Patent US4969996A successfully refreshed from Google Patents.
US4969996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water purification device with an intake funnel
Assignee: Brita Canada Inc
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Filing: 1989-02-28
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Granted: 1990-11-13
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Expires: 2009-02-28
Abstract
Abstract Described is a water purification device having an intake funnel (1), a sleeve (2) which is sealingly connected thereto and an insert which has approximately cylindrical side walls (4), a filter cover (5) and a filter bottom (6) and in which a granulate-type purification agent can be introduced. So that any gases and/or air which accumulates no longer impede the flow of water to be purified through the filter bottom (6), in accordance with the invention it is provided that the filter bottom (6) has an air collecting space (7) which is extended upwardly at least partially towards the side wall (4); wherein preferably the air collecting space (7) is in the configuration of half-tubes (11) which are open downwardly and outwardly of the bottom and which are connected to each other and to a chimney-like half-tube (12) which extends over the side walls (4).
Inventors
- 👤 Heinz Hankammer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:00
CPC Classifications
B; B01; B01D; B01D35/00; B01D36/00; B01D36/001; B01D35/02; B01D35/027; C; C02; C02F; C02F1/00; C02F1/001; C02F1/003; C02F2201/00; C02F2201/002; C02F2201/006; C02F2307/00; C02F2307/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
125 words
A water purification device comprising an intake funnel, a sleeve wherein said sleeve is sealingly connected to said funnel at an upper end of said sleeve, said sleeve further having an opening formed therein, an insert having approximately cylindrical side walls, a filter cover and a filter bottom for accommodating a granulate filter agent therein with means defining an air collecting space, located in at least a portion of the filter bottom, said means defining the air collecting space extending upwardly at least partially towards the side wall and to the opening in said sleeve, with said filter bottom having opening means to allow the passage of filtrate therethrough, and with said filter cover having opening means whereby fluid can be passed into the insert.
Claim 2
Dependent Claim
125 words
A water purification device comprising an intake funnel, a sleeve wherein said sleeve is sealingly connected to said funnel at an upper end of said sleeve, said sleeve further having an opening formed therein, an insert having approximately cylindrical side walls, a filter cover and a filter bottom for accommodating a granulate filter agent therein with means defining an air collecting space, located in at least a portion of the filter bottom, said means defining the air collecting space extending upwardly at least partially towards the side wall and to the opening in said sleeve, with said filter bottom having opening means to allow the passage of filtrate therethrough, and with said filter cover having opening means whereby fluid can be passed into the insert.
Claim 3
Dependent Claim
34 words
The device of claim 1 wherein said means defining an air collecting space is defined in part by the filter bottom and has an upwardly extending portion extending toward the interior of the insert.
Claim 4
Dependent Claim
54 words
The device of claim 1 or claim 2 wherein said means defining an air collecting space includes partial tubular configurations of generally inverted U-shaped cross-section and which are connected to each other and a further tubular configuration also of generally U-shaped cross-section and which extends over at least a part of the side walls.
Claim 5
Dependent Claim
30 words
The device of claim 3, wherein said tubular configurations are in a generally star-like configuration extending generally radially from an outer edge of the filter bottom toward the center thereof.
Claim 6
Dependent Claim
24 words
The device of claim 4 wherein said filter bottom has at least one filter projection which extends approximately perpendicularly out of the surface thereof.
Claim 7
Dependent Claim
21 words
The device of claim 5, wherein said means defining an air collecting space is arranged beside at least one filter projection.
Claim 8
Dependent Claim
42 words
The device of claim 3 wherein said means defining an air collecting space, of the further tubular configuration extends into the upper quarter of the side wall of the insert and to said sleeve opening for discharge of collected air or gas.
Claim 9
Dependent Claim
40 words
The device of claim 1 wherein said sleeve is provided at its bottom with four openings for holding four filter projections of the insert, extending downwardly, in such a way that the air collecting space is above the sleeve bottom.
Claim 10
Dependent Claim
22 words
The device of claim 8 wherein a preferably wedge-shaped guide rib is disposed on the inward side of the substantially cylindrical sleeve.
References Cited (Backward Citations)
US2465623A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-11-12 | 1994-05-14 | 1994-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-11-12 | 1998-05-14 | 1998-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-11-12 | 2002-05-14 | 2002-11-13 | $7700.00 | Window Closed / Lapsed |