US3133423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-defrosting refrigeration apparatus
Assignee: Lanteris Space LLC
•
Filing: 1962-07-16
•
Granted: 1964-05-19
•
Expires: 1982-07-16
Abstract
No abstract record available.
Inventors
- 👤 Michael H Devery
- 👤 Dickson George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:41
CPC Classifications
F; F25; F25D; F25D21/00; F25D21/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
IN REFRIGERATOR CABINET STRUCTURE, THE COMBINATION COMPRISING: MEANS DEFINING A HIGHER TEMPERATURE STORAGE COMPARTMENT; MEANS DEFINING A LOWER TEMPERATURE STORAGE COMPARTMENT DISPOSED BELOW THE FORMER OF SAID COMPARTMENTS; MEANS DEFINING A FIRST AIR FLOW DUCT EXTENDING VERTICALLY FROM A LOWER REGION OF SAID LOWER TEMPERATURE COMPARTMENT; FIRST AND SECOND COOLING MEANS DISPOSED FOR HEAT EXCHANGE WITH AIR IN SAID FIRST DUCT, SAID FIRST COOLING MEANS INCLUDING A PORTION DISPOSED TO COOL AIR WITHIN SAID HIGHER TEMPERATURE COMPARTMENT; MEANS DEFINING A SECOND VERTICALLY EXTENDING DUCT DISPOSED ADJACENT SAID FIRST DUCT, SAID SECOND DUCT COMMUNICATING IN AN UPPER REGION THEREOF WITH AN UPPER REGION OF SAID FIRST DUCT, SAID UPPER REGION CORRESPONDING TO AN UPPER REGION OF SAID HIGHER TEMPERATURE COMPARTMENT, SAID SECOND DUCT COMMUNICATING IN A LOWER REGION THEREOF WITH AN UPPER REGION OF SAID LOWER TEMPERATURE COMPARTMENT; AND MEANS FOR EFFECTING AIR FLOW UPWARDLY IN SAID SECOND DUCT, THENCE DOWNWARDLY IN SAID FIRST DUCT AND INTO SAID LOWER TEMPERATURE COMPARTMENT TO COOL THE LATTER.
Claim 2
Dependent Claim
164 words
IN REFRIGERATOR CABINET STRUCTURE, THE COMBINATION COMPRISING: MEANS DEFINING A HIGHER TEMPERATURE STORAGE COMPARTMENT; MEANS DEFINING A LOWER TEMPERATURE STORAGE COMPARTMENT DISPOSED BELOW THE FORMER OF SAID COMPARTMENTS; MEANS DEFINING A FIRST AIR FLOW DUCT EXTENDING VERTICALLY FROM A LOWER REGION OF SAID LOWER TEMPERATURE COMPARTMENT; FIRST AND SECOND COOLING MEANS DISPOSED FOR HEAT EXCHANGE WITH AIR IN SAID FIRST DUCT, SAID FIRST COOLING MEANS INCLUDING A PORTION DISPOSED TO COOL AIR WITHIN SAID HIGHER TEMPERATURE COMPARTMENT; MEANS DEFINING A SECOND VERTICALLY EXTENDING DUCT DISPOSED ADJACENT SAID FIRST DUCT, SAID SECOND DUCT COMMUNICATING IN AN UPPER REGION THEREOF WITH AN UPPER REGION OF SAID FIRST DUCT, SAID UPPER REGION CORRESPONDING TO AN UPPER REGION OF SAID HIGHER TEMPERATURE COMPARTMENT, SAID SECOND DUCT COMMUNICATING IN A LOWER REGION THEREOF WITH AN UPPER REGION OF SAID LOWER TEMPERATURE COMPARTMENT; AND MEANS FOR EFFECTING AIR FLOW UPWARDLY IN SAID SECOND DUCT, THENCE DOWNWARDLY IN SAID FIRST DUCT AND INTO SAID LOWER TEMPERATURE COMPARTMENT TO COOL THE LATTER.
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) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |