Patent US3338064A successfully refreshed from Google Patents.
US3338064A
Expired / Lapsed
US
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Ice melting system
Assignee: Blaw Knox Co
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Filing: 1961-11-24
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Granted: 1967-08-29
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Expires: 1981-11-24
Abstract
No abstract record available.
Inventors
- 👤 George B Karnofsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:17
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/22
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
89 words
METHOD OF MELTING ICE COMPRISING, IN COMBINATION, FEEDING A SELF-LEVELING PRODUCE ICE SLURRY ONTO A PERFORATED DRAINING SUPPORT IN A VAPOR-TIGHT ZONE, DISTRIBUTING SAID SLURRY IN A BED OF RELATIVELY UNIFORM THICKNESS OVER THE SURFACE OF SAID SUPPORT, DRAINING LIQUID CONTINUOUSLY FROM SAID BED THROUGH SAID SUPPORT TO PROVIDE GAS PENETRATION VOIDS IN SAID BED, INTRODUCING CONDENSIBLE VAPORIZED REFRIGERANT INTO SAID BED FROM ABOVE TO ENTER SAID VOIDS AND MELT SAID ICE AND CONDENSE SAID REFRIGERANT, COLLECTING MELTED ICE AND CONDENSED REFRIGERANT BELOW SAID SUPPORT IN SAID VAPOR-TIGHT ZONE.
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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) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |