US3307373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transparent refrigerator door control
Assignee: Individual
•
Filing: 1965-10-22
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Granted: 1967-03-07
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Expires: 1985-10-22
Abstract
No abstract record available.
Inventors
- 👤 John S Booth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:16
CPC Classifications
A; A47; A47F; A47F3/00; A47F3/04; A47F3/0404; A47F3/0426; A47F3/043; F; F25; F25D; F25D21/00; F25D21/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
IN A REFRIGERATOR HAVING FORCED AIR CIRCULATION THEREIN AND A DOOR HAVING A PLURALITY OF SPACED TRANSPARENT PANELS, WHICH DOOR IS PROVIDED WITH SEALING STRUCTURE WHICH IS AIR-TIGHT UPON CLOSURE THEREOF, THE COMBINATION WHICH COMPRISES (A) DUCT STRUCTURE OPENING AT ONE END WITHIN SAID REFRIGERATOR AND AT THE OTHER END IN THE SPACE BETWEEN SAID PANELS WITH SAID DUCT STRUCTURE BEING SEVERABLE UPON OPENING OF SAID DOOR, AND (B) MEANS FOR DEVELOPING PRESSURE LOWER THAN THE AMBIENT PRESSURE IN SAID INTERIOR FROM SAID AIR CIRCULATION AND FOR APPLYING SAID LOW PRESSURE TO SAID OTHER END TO CAUSE ANY AIR MOVEMENT THROUGH SAID DUCT STRUCTURE WHEN SAID DOOR IS CLOSED TO BE TOWARD SAID INTERIOR.
Claim 2
Dependent Claim
114 words
IN A REFRIGERATOR HAVING FORCED AIR CIRCULATION THEREIN AND A DOOR HAVING A PLURALITY OF SPACED TRANSPARENT PANELS, WHICH DOOR IS PROVIDED WITH SEALING STRUCTURE WHICH IS AIR-TIGHT UPON CLOSURE THEREOF, THE COMBINATION WHICH COMPRISES (A) DUCT STRUCTURE OPENING AT ONE END WITHIN SAID REFRIGERATOR AND AT THE OTHER END IN THE SPACE BETWEEN SAID PANELS WITH SAID DUCT STRUCTURE BEING SEVERABLE UPON OPENING OF SAID DOOR, AND (B) MEANS FOR DEVELOPING PRESSURE LOWER THAN THE AMBIENT PRESSURE IN SAID INTERIOR FROM SAID AIR CIRCULATION AND FOR APPLYING SAID LOW PRESSURE TO SAID OTHER END TO CAUSE ANY AIR MOVEMENT THROUGH SAID DUCT STRUCTURE WHEN SAID DOOR IS CLOSED TO BE TOWARD SAID INTERIOR.
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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |