Patent US5502978A successfully refreshed from Google Patents.
US5502978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water cooling apparatus
Assignee: Big Iron Drilling Ltd
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Filing: 1994-11-10
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Granted: 1996-04-02
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Expires: 2014-11-10
Abstract
Abstract In general, clean cold water can be made available in a household by means of either an expensive refrigerator with a cold water dispenser or a separate cooler and bulky, replaceable water bottles. A simple solution to the problem involves a carbon filter and cooling reservoir combination for mounting in a refrigerator, a pipe system containing a faucet for dispensing cold water and returning water to the filter, and a pump/timer combination for periodically recycling the water in the pipe system through the filter, whereby cold water is always virtually instantaneously available at the faucet.
Inventors
- 👤 George R. Field
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:43
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/28; C02F1/283; F; F25; F25D; F25D23/00; F25D23/12; F25D23/126; F25D2323/00; F25D2323/121
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
143 words
A water cooling apparatus for use with a refrigerator comprising inlet means for introducing water from a source thereof into a refrigerator for cooling; carbon filter means for mounting in a refrigerator for receiving water from said inlet means for cleaning; cooling reservoir means for mounting in the refrigerator to receive the water from the filter means; outlet means for dispensing cold water from said cooling reservoir means to a dispenser external to the refrigerator; bypass means connected to said outlet means for returning water from said outlet means to said filter means; and recirculating means including pump means in said bypass means for recirculating cold water from said outlet means to said filter means, whereby clean, cold water is constantly present in said outlet means, and timer means connected to said pump means for operating said pump means on a periodic basis.
Claim 2
Dependent Claim
143 words
A water cooling apparatus for use with a refrigerator comprising inlet means for introducing water from a source thereof into a refrigerator for cooling; carbon filter means for mounting in a refrigerator for receiving water from said inlet means for cleaning; cooling reservoir means for mounting in the refrigerator to receive the water from the filter means; outlet means for dispensing cold water from said cooling reservoir means to a dispenser external to the refrigerator; bypass means connected to said outlet means for returning water from said outlet means to said filter means; and recirculating means including pump means in said bypass means for recirculating cold water from said outlet means to said filter means, whereby clean, cold water is constantly present in said outlet means, and timer means connected to said pump means for operating said pump means on a periodic basis.
Claim 3
Dependent Claim
31 words
A water cooling apparatus according to claim 1, wherein said recirculating means includes check valve means in said bypass means for preventing the entry of unfiltered water into said outlet means.
Claim 4
Dependent Claim
39 words
A water cooling apparatus according to claim 2 wherein said outlet means includes outlet pipe means for carrying cold water from said cooling reservoir means;.and storage reservoir means for use outside of the refrigerator for temporarily storing cold water.
Claim 5
Dependent Claim
181 words
A water cooling apparatus for use with a refrigerator including carbon filter means for mounting in a refrigerator; inlet pipe means for introducing water from a source thereof into the filter means; cooling reservoir means for mounting in the refrigerator for receiving the water from the filter means for cooling; first outlet pipe means for dispensing cold water from said cooling reservoir to a dispenser external to the refrigerator; first bypass pipe means connected to said first outlet pipe means for returning cooled water from said first outlet pipe means to said inlet pipe means for recirculation through said filter means; pump means in said first bypass pipe means for recirculating the water from the first outlet pipe means to said filter means to draw fresh cooled water into said first outlet pipe means, whereby cool water is constantly present in said first outlet pipe means; and timer means connected to said pump means for operating said pump means on a periodic basis, whereby cool water is present in said first outlet pipe means on a more or less continuous basis.
Claim 6
Dependent Claim
181 words
A water cooling apparatus for use with a refrigerator including carbon filter means for mounting in a refrigerator; inlet pipe means for introducing water from a source thereof into the filter means; cooling reservoir means for mounting in the refrigerator for receiving the water from the filter means for cooling; first outlet pipe means for dispensing cold water from said cooling reservoir to a dispenser external to the refrigerator; first bypass pipe means connected to said first outlet pipe means for returning cooled water from said first outlet pipe means to said inlet pipe means for recirculation through said filter means; pump means in said first bypass pipe means for recirculating the water from the first outlet pipe means to said filter means to draw fresh cooled water into said first outlet pipe means, whereby cool water is constantly present in said first outlet pipe means; and timer means connected to said pump means for operating said pump means on a periodic basis, whereby cool water is present in said first outlet pipe means on a more or less continuous basis.
Claim 7
Dependent Claim
48 words
A water cooling apparatus according to claim 4, including second bypass pipe means for feeding water from said filter means to said cooling reservoir means in the refrigerator; and second outlet pipe means connected to said second bypass pipe means for dispensing filtered water from said filter means.
Claim 8
Dependent Claim
38 words
A water cooling apparatus according to claim 5, including storage reservoir means in said first outlet pipe means upstream of said first bypass pipe means in the direction of water flow for storing cooled water prior to dispensing.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-04-02 | 1999-10-02 | 2000-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-04-02 | 2003-10-02 | 2004-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-04-02 | 2007-10-02 | 2008-04-02 | $7700.00 | Window Closed / Lapsed |