US5140829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning system
Assignee: Individual
•
Filing: 1991-07-16
•
Granted: 1992-08-25
•
Expires: 2011-07-16
Abstract
Abstract A space-cooling system based upon the present invention cools the space through a heat exchanger carrying ground water that has been slightly chilled by a heat pump. The chiller can be referenced to the outflow water from the space heat exchanger, or to fresh ground water. The heated discharged water can be utilized as pre-heated household water, or discharged in irrigation or to a drainage system.
Inventors
- 👤 David Barwacz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:38
CPC Classifications
F; F24; F24D; F24D17/00; F24D17/02; F24F; F24F5/00; F24F5/0046; Y; Y02; Y02B; Y02B10/00; Y02B10/20
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
41 words
A space-cooling system comprising: a space heat exchanger, and means adapted to deliver ground water to said space heat exchanger; and heat-pump means to lower the temperature of said ground water prior to the entrance thereof into said space heat exchanger.
Claim 2
Dependent Claim
41 words
A space-cooling system comprising: a space heat exchanger, and means adapted to deliver ground water to said space heat exchanger; and heat-pump means to lower the temperature of said ground water prior to the entrance thereof into said space heat exchanger.
Claim 3
Dependent Claim
28 words
A system as defined in claim 1, wherein at least part of the waste heat from said heat pump means is delivered to a household hot water system.
Claim 4
Dependent Claim
26 words
A system as defined in claim 1, wherein at least part of the heated discharge from said heat pump means is delivered to an irrigation system.
Claim 5
Dependent Claim
19 words
A system as defined in claim 1, additionally including control means adapted to selectively activate said heat pump means.
References Cited (Backward Citations)
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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) | 1995-08-25 | 1996-02-24 | 1996-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-25 | 2000-02-24 | 2000-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-25 | 2004-02-24 | 2004-08-25 | $7700.00 | Window Closed / Lapsed |