US3245224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Louver construction for refrigerator vents in house trailers and the like
Assignee: Interstate Engineering Corp
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Filing: 1964-09-08
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Granted: 1966-04-12
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Expires: 1984-09-08
Abstract
No abstract record available.
Inventors
- 👤 Robert E Wilkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:55
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/08; B; B60; B60H; B60H1/00; B60H1/00357; B60H1/00371; F25; F25D; F25D23/00; F25D23/10; F24F13/082; F25B; F25B2333/00; F25B2333/003; F25B33/00; F25D23/003; F25D2323/00; F25D2323/002; F25D2323/0026; F25D2323/00261; F25D2323/0027; F25D2323/00272
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
IN COMBINATION WITH A TRAILER OR THE LIKE HAVING A FLAME ENERGIZED REFRIGERATOR WITH A BURNER WHEREIN PORTIONS OF THE TRAILER AND REFRIGERATOR DEFINE A FLUE SPACEDD AND A FLUE TUBE IN THE FLUE SPACE OVER THE BURNER ADJACENT AN EXTERIOR WALL OF THE TRAILER, AND OPENINGS IN THE EXTERIOR WALL ADJACENT THE TOP AND THE BOTTOM OF THE FLUE SPACE AND FLUDE TUBE, RESPECTIVELY, MEANS CAUSING THE UPPER VENT OPENING TO BE TRAVERSED BY INNER HORIZONTAL UPWARDLY DIRECTED LOUVERS AND OUTER VERTICAL REARWARDLY DIRECTED LOUVERS.
Claim 2
Dependent Claim
86 words
IN COMBINATION WITH A TRAILER OR THE LIKE HAVING A FLAME ENERGIZED REFRIGERATOR WITH A BURNER WHEREIN PORTIONS OF THE TRAILER AND REFRIGERATOR DEFINE A FLUE SPACEDD AND A FLUE TUBE IN THE FLUE SPACE OVER THE BURNER ADJACENT AN EXTERIOR WALL OF THE TRAILER, AND OPENINGS IN THE EXTERIOR WALL ADJACENT THE TOP AND THE BOTTOM OF THE FLUE SPACE AND FLUDE TUBE, RESPECTIVELY, MEANS CAUSING THE UPPER VENT OPENING TO BE TRAVERSED BY INNER HORIZONTAL UPWARDLY DIRECTED LOUVERS AND OUTER VERTICAL REARWARDLY DIRECTED LOUVERS.
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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |