Patent US3103796A successfully refreshed from Google Patents.
US3103796A
Expired / Lapsed
US
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Refrigeration system
Assignee: Hussmann Corp
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Filing: 1960-07-15
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Granted: 1963-09-17
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Expires: 1980-07-15
Abstract
No abstract record available.
Inventors
- 👤 Edgar Vaughn Dickson
- 👤 Theodore Emil Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:11
CPC Classifications
F; F25; F25D; F25D21/00; F25D21/06; A; A47; A47F; A47F3/00; A47F3/04; A47F3/0439; A47F3/0443; A47F3/0447; A47F3/0452; A47F2003/046; F25B; F25B2347/00; F25B2347/02; F25B2347/021
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
107 words
A REFRIGERATED CASE HAVING A PRODUCT AREA, FIRST AND SECOND CHAMBERS IN PARALLEL AIR FLOW RELATIONSHIP AND HAVING COMMON AIR DISTRIBUTION AND RETURN MEANS IN COMMUNICATION WITH SAID PRODUCT AREA, AN EVAPORATOR IN EACH OF SAID CHAMBERS, A FAN IN EACH OF SAID CHAMBERS FOR CIRCULATING AIR THROUGH THE EVAPORATOR THEREIN AND DISCHARGING THE AIR INTO SAID AIR DISTRIBUTION MEANS, MEANS PROVIDING ALTERNATE OPERATION OF SAID EVAPORATOR AND FAN IN SAID FIRST CHAMBER WITH THE EVAPORATOR AND FAN IN SAID SECOND CHAMBER, AND A MAIN FAN POSITIONED IN SAID AIR DISTRIBUTION MEANS FOR EFFECTING AN AIR CIRCULATION BALANCE BETWEEN SAID FANS IN SAID FIRST AND SECOND CHAMBERS.
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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) | 1966-09-16 | 1967-03-18 | 1967-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-16 | 1971-03-18 | 1971-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-16 | 1975-03-18 | 1975-09-17 | $7700.00 | Window Closed / Lapsed |