US4265712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water purification system
Assignee: Individual
•
Filing: 1979-03-09
•
Granted: 1981-05-05
•
Expires: 1999-03-09
Abstract
Abstract A water purification system for use in combination with a domestic hot water heating tank. The system includes a water container for containing water separate from the water in the tank. A conduit carries hot water from the tank to the container, passing in close proximity to the heating unit of the hot water tank. A duct leading from the container conveys water vapor formed in the container to a receptacle. The water in the receptacle having been evaporated and condensed is thus purified for domestic use.
Inventors
- 👤 Peter J. McLean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:57
CPC Classifications
C; C02; C02F; C02F9/00; C02F9/20; C02F1/00; C02F1/02; C02F1/04; C02F1/16; Y; Y10; Y10S; Y10S203/00; Y10S203/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
The combination with an upright domestic hot water tank having a gas burner adjacent the bottom of said tank for heating water in said tank, of a water container for containing water separate from the water in said tank, means providing a vertical passage extending generally centrally through said tank for the exhaust of gaseous products of combustion of said gas burner, a conduit to carry hot water from said tank to said container, said conduit having a U-shaped portion composed of vertical sections disposed lengthwise within said passage joined at their lower ends by a connecting portion spaced closely above said gas burner to be heated thereby, a valve for said conduit, a collection receptacle for condensed water, and a duct leading from said container to convey water vapor formed in said container to said receptacle.
Claim 2
Dependent Claim
137 words
The combination with an upright domestic hot water tank having a gas burner adjacent the bottom of said tank for heating water in said tank, of a water container for containing water separate from the water in said tank, means providing a vertical passage extending generally centrally through said tank for the exhaust of gaseous products of combustion of said gas burner, a conduit to carry hot water from said tank to said container, said conduit having a U-shaped portion composed of vertical sections disposed lengthwise within said passage joined at their lower ends by a connecting portion spaced closely above said gas burner to be heated thereby, a valve for said conduit, a collection receptacle for condensed water, and a duct leading from said container to convey water vapor formed in said container to said receptacle.
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) | 1984-05-04 | 1984-11-03 | 1985-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-04 | 1988-11-03 | 1989-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-04 | 1992-11-03 | 1993-05-05 | $7700.00 | Window Closed / Lapsed |