US3232071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air flow control for use in refrigeration apparatus
Assignee: Whirlpool Corp
•
Filing: 1963-08-12
•
Granted: 1966-02-01
•
Expires: 1983-08-12
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Wallenbrock
- 👤 Sigl John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:47
CPC Classifications
F; F25; F25D; F25D17/00; F25D17/04; F25D17/06; F25D17/062; F25D17/065; F25D17/042; F25D17/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
REFRIGERATION APPARATUS COMPRISING: MEANS DEFINING A FIRST CHAMBER TO BE REFRIGERATED; MEANS DEFINING A SECOND CHAMBER TO BE REFRIGERATED; AIR REFRIGERATION MEANS; AIR MIXING MEANS; FIRST DUCT MEANS FOR CONDUCTING AIR STREAMS FROM SAID CHAMBERS THROUGH SAID REFRIGERATING MEANS TO SAID AIR MIXING MEANS FOR MIXING THEREIN; SECOND DUCT MEANS FOR CONDUCTING MIXED AIR FROM SAID AIR MIXING MEANS TO SAID CHAMBERS; AND MEANS FOR OPERATING SAID AIR MIXING MEANS FOR SUBSTANTIALLY CONTINUOUSLY MIXING AIR FROM SAID CHAMBERS AND FOR OPERATING SAID AIR REFRIGERATING MEANS ONLY WHEN THE TEMPERATURE OF MIXED AIR BEING DELIVERED FROM SAID AIR MIXING MEANS IS ABOVE A PRESELECTED TEMPERATURE.
Claim 2
Dependent Claim
104 words
REFRIGERATION APPARATUS COMPRISING: MEANS DEFINING A FIRST CHAMBER TO BE REFRIGERATED; MEANS DEFINING A SECOND CHAMBER TO BE REFRIGERATED; AIR REFRIGERATION MEANS; AIR MIXING MEANS; FIRST DUCT MEANS FOR CONDUCTING AIR STREAMS FROM SAID CHAMBERS THROUGH SAID REFRIGERATING MEANS TO SAID AIR MIXING MEANS FOR MIXING THEREIN; SECOND DUCT MEANS FOR CONDUCTING MIXED AIR FROM SAID AIR MIXING MEANS TO SAID CHAMBERS; AND MEANS FOR OPERATING SAID AIR MIXING MEANS FOR SUBSTANTIALLY CONTINUOUSLY MIXING AIR FROM SAID CHAMBERS AND FOR OPERATING SAID AIR REFRIGERATING MEANS ONLY WHEN THE TEMPERATURE OF MIXED AIR BEING DELIVERED FROM SAID AIR MIXING MEANS IS ABOVE A PRESELECTED TEMPERATURE.
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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) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |