US3618569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for transferring heat from one portion of a water reservoir to another
Assignee: Individual
•
Filing: 1969-07-17
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Granted: 1971-11-09
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Expires: 1989-07-17
Abstract
Abstract This invention relates to a device for melting surface ice on a water tank and in particular to a device for maintaining water tanks, such as stock tanks, ice free during the cold months. The device consists of a continuous loop having a hollow interior and filled with volatile liquid which can be circulated through the loop by convection. The loop has two enlarged ends being connected together by a straight portion which is insulated to prevent heat loss in transferring the heat-conveying liquid from one end of the loop to the other.
Inventors
- 👤 Stephen C Baer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:16
CPC Classifications
F; F28; F28D; F28D15/00; A; A01; A01K; A01K7/00; A01K7/02; A01K7/027; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6579
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
In a stock watering reservoir, an ice melter comprising: a hollow tube formed in a sealed loop; said sealed hollow loop having a first enlarged end forming a watering access opening and a second enlarged end, said first and second ends being connected together by straight tube portions; insulation means surrounding said straight tube portions for reducing heat loss therefrom; heat transfer fluid filling said sealed hollow tube; whereby a difference in temperature between said first and second ends of said hollow tube cause a convection current in said heat transfer fluid.
Claim 2
Dependent Claim
92 words
In a stock watering reservoir, an ice melter comprising: a hollow tube formed in a sealed loop; said sealed hollow loop having a first enlarged end forming a watering access opening and a second enlarged end, said first and second ends being connected together by straight tube portions; insulation means surrounding said straight tube portions for reducing heat loss therefrom; heat transfer fluid filling said sealed hollow tube; whereby a difference in temperature between said first and second ends of said hollow tube cause a convection current in said heat transfer fluid.
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) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |