Patent US4764274A successfully refreshed from Google Patents.
US4764274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water filter unit and dispenser
Assignee: FERMOILE WILLIAM J JR
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Filing: 1985-11-19
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Granted: 1988-08-16
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Expires: 2005-11-19
Abstract
Abstract A replaceable water filter unit which can be used with a water pitcher, water bottle, or other such water dispensing device utilizes activated charcoal particles which are sandwiched between a pair of pads which may be fabricated of polyester felt batting material. The pads and charcoal particles sandwiched therebetween are installed in a frusto-conical housing with the pads in tight abutment against the side walls of the housing. The opposite end walls of the housing are apertured and each of the pads is installed directly opposite one of these end wall portions. The housing is removably installed in the outlet portion of the water dispensing device such that the water passes through the pads and the charcoal particles when being dispensed.
Inventors
- 👤 Bernard Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:17
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/28; C02F1/283; C02F1/001; C02F1/003; C02F2201/00; C02F2201/002; C02F2201/006; C02F2307/00; C02F2307/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
229 words
In combination with a water container and dispenser having an outlet, a water filter unit for use in filtering water as it is dispensed from said water container and dispenser comprising: a housing having a side wall and a pair of opposing apertured end walls, one of said end walls being integrally formed with said housing, the other of said end walls being removably attached to said side wall, said other end wall having a grooved rim which snaps onto a bottom edge of said side wall, a pair of similar fibrous filter pads, said pads each having opposite broad surfaces and side edges, a bed of charcoal particles, said filter pads being mounted in said housing with one of the broad surfaces of one of said pads abutting against one of the apertured end walls of the housing, one of the broad surfaces of the other of said pads abutting against the other of said apertured end walls of the housing, and the side edges of said pads abutting tightly against the side wall of said housing, the bed of charcoal particles being sandwiched between said pads, and said housing being installed in said container and dispenser with one of the apertured end walls facing the interior of said container and dispenser and the other of said apertured end walls facing the outlet of said container and dispenser.
Claim 2
Dependent Claim
229 words
In combination with a water container and dispenser having an outlet, a water filter unit for use in filtering water as it is dispensed from said water container and dispenser comprising: a housing having a side wall and a pair of opposing apertured end walls, one of said end walls being integrally formed with said housing, the other of said end walls being removably attached to said side wall, said other end wall having a grooved rim which snaps onto a bottom edge of said side wall, a pair of similar fibrous filter pads, said pads each having opposite broad surfaces and side edges, a bed of charcoal particles, said filter pads being mounted in said housing with one of the broad surfaces of one of said pads abutting against one of the apertured end walls of the housing, one of the broad surfaces of the other of said pads abutting against the other of said apertured end walls of the housing, and the side edges of said pads abutting tightly against the side wall of said housing, the bed of charcoal particles being sandwiched between said pads, and said housing being installed in said container and dispenser with one of the apertured end walls facing the interior of said container and dispenser and the other of said apertured end walls facing the outlet of said container and dispenser.
Claim 3
Dependent Claim
15 words
The combination of claim 1 wherein said pads are circular and said housing is frusto-conical.
Claim 4
Dependent Claim
26 words
The combination of claim 1 wherein said water container and dispenser is a pitcher having an apertured cover, said filter being removably fitted in said cover.
Claim 5
Dependent Claim
36 words
The combination of claim 1 wherein said water container and dispenser is a water bottle having a lip at its outlet and means for removably attaching said filter unit to the lip of said water bottle.
Claim 6
Dependent Claim
215 words
In combination with a water container and dispenser having an outlet and a removable cover, a water filter unit removably installed in said cover for filtering water as it is dispensed from said water container and dispenser comprising: a housing having a side wall, a pair of opposing apertured end walls and a rim extending radially outwardly from said side wall, a pair of similar fibrous filter pads, said pads each having opposite broad surfaces and side edges, a bed of charcoal particles, said filter pads being mounted in said housing with one of the broad surfaces of each of said pads abutting against a separate one of the apertured end walls of the housing and the side edges of said pads abutting tightly against the side wall of said housing, the bed of charcoal particles being sandwiched between the pads, said removable cover having an apertured side wall for passing water and means defining a plurality of slots formed therein, said housing rim snapping into said slots to removably retain the housing to said cover, and said cover being installed in said container and dispenser such that when water is dispensed from the container and dispenser it passes from the filter into the cover and out through the apertured side wall of said cover.
Claim 7
Dependent Claim
215 words
In combination with a water container and dispenser having an outlet and a removable cover, a water filter unit removably installed in said cover for filtering water as it is dispensed from said water container and dispenser comprising: a housing having a side wall, a pair of opposing apertured end walls and a rim extending radially outwardly from said side wall, a pair of similar fibrous filter pads, said pads each having opposite broad surfaces and side edges, a bed of charcoal particles, said filter pads being mounted in said housing with one of the broad surfaces of each of said pads abutting against a separate one of the apertured end walls of the housing and the side edges of said pads abutting tightly against the side wall of said housing, the bed of charcoal particles being sandwiched between the pads, said removable cover having an apertured side wall for passing water and means defining a plurality of slots formed therein, said housing rim snapping into said slots to removably retain the housing to said cover, and said cover being installed in said container and dispenser such that when water is dispensed from the container and dispenser it passes from the filter into the cover and out through the apertured side wall of said cover.
Claim 8
Dependent Claim
38 words
The combination of claim 5 wherein one of the end walls of the housing is removably attached thereto, said one of said end walls having a grooved rim which snaps onto a bottom edge of the side wall.
Claim 9
Dependent Claim
25 words
The combination of claim 5 wherein said container and dispenser has a ridge formed therein, said cover having a rim which rests on said ridge.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-16 | 1992-02-15 | 1992-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-16 | 1996-02-15 | 1996-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-16 | 2000-02-15 | 2000-08-16 | $7700.00 | Window Closed / Lapsed |