US3304736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerated display case
Assignee: Newfrey LLC
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Filing: 1965-08-06
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Granted: 1967-02-21
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Expires: 1985-08-06
Abstract
No abstract record available.
Inventors
- 👤 James H Brennan
- 👤 Malcolm D Mac-Master
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:33
CPC Classifications
A; A47; A47F; A47F3/00; A47F3/04; A47F3/0439; A47F3/0443; A47F3/0447
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
A REFRIGERATED DISPLAY CASE HAVING A STORAGE SPACE PROVIDED WITH AN ACCESS OPENING, MEANS FOR CIRCULATING AIR IN THE FORM OF AN AIR CURTAIN ACROSS SAID ACCESS OPENING, AN AIR OUTLET LOCATED AT ONE SIDE OF SAID ACCESS OPENING FORMED TO PRODUCE A PROTECTIVE LAYER OF AIR DIRECTED ACROSS SAID ACCESS OPENING BETWEEN SAID STORAGE SPACE AND AIR AMBIENT TO THE CASE ON THE SIDE OF THE AIR CURTAIN REMOTE FROM THE STORAGE SPACE, AIR INLET MEANS ON THE OPPOSITE SIDE OF SAID ACCESS OPENING SO LOCATED AND OF SUCH CAPACITY AS TO BE CAPABLE OF RECEIVING BOTH SAID PROTECTIVE LAYER OF AIR AND AMBIENT AIR ENTRAINED WITH THE PROTECTIVE LAYER OF AIR DURING PASSAGE THEREOF ACROSS THE ACCESS OPENING, A CONDUIT EXTENDING FROM SAID AIR INLET MEANS TO SAID AIR OUTLET, A BLOWER IN SAID CONDUIT, AND MEANS LOCATED BETWEEN SAID AIR INLET MEANS AND SAID AIR OUTLET FOR VENTING FROM SAID CONDUIT EXCESS AIR NOT UTILIZED IN PRODUCING SAID PROTECTIVE LAYER OF AIR.
Claim 2
Dependent Claim
165 words
A REFRIGERATED DISPLAY CASE HAVING A STORAGE SPACE PROVIDED WITH AN ACCESS OPENING, MEANS FOR CIRCULATING AIR IN THE FORM OF AN AIR CURTAIN ACROSS SAID ACCESS OPENING, AN AIR OUTLET LOCATED AT ONE SIDE OF SAID ACCESS OPENING FORMED TO PRODUCE A PROTECTIVE LAYER OF AIR DIRECTED ACROSS SAID ACCESS OPENING BETWEEN SAID STORAGE SPACE AND AIR AMBIENT TO THE CASE ON THE SIDE OF THE AIR CURTAIN REMOTE FROM THE STORAGE SPACE, AIR INLET MEANS ON THE OPPOSITE SIDE OF SAID ACCESS OPENING SO LOCATED AND OF SUCH CAPACITY AS TO BE CAPABLE OF RECEIVING BOTH SAID PROTECTIVE LAYER OF AIR AND AMBIENT AIR ENTRAINED WITH THE PROTECTIVE LAYER OF AIR DURING PASSAGE THEREOF ACROSS THE ACCESS OPENING, A CONDUIT EXTENDING FROM SAID AIR INLET MEANS TO SAID AIR OUTLET, A BLOWER IN SAID CONDUIT, AND MEANS LOCATED BETWEEN SAID AIR INLET MEANS AND SAID AIR OUTLET FOR VENTING FROM SAID CONDUIT EXCESS AIR NOT UTILIZED IN PRODUCING SAID PROTECTIVE LAYER OF AIR.
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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |