US3563052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Freeze cushion for absorption refrigeration machine
Assignee: Carrier Corp
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Filing: 1968-09-03
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Granted: 1971-02-16
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Expires: 1988-09-03
Abstract
Abstract AN ABSORPTION REFRIGERATION MACHINE EMPLOYING A WATER CHILLER WITH A CENTRAL RESILIENT COLUMN WHICH IS DEFORMABLE BY WATER PRESSURE CREATED BY FREEZING OF THE WATER IN THE CHILLER TO PROVIDE A PASSAGE FOR FLOW OF WATER FROM THE INTERIOR OF THE ICE BLOCK FORMED IN THE CHILLER TO PREVENT DAMAGE TO THE CHILLER CAUSED BY EXPANSION OF THE ICE.
Inventors
- 👤 Earl L Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:04
CPC Classifications
F; F25; F25B; F25B15/00; F25B15/02; F25B15/04; Y; Y02; Y02A; Y02A30/00; Y02A30/27; Y02B; Y02B30/00; Y02B30/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |