US3606876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger cell for gas-fired furnace
Assignee: Carrier Corp
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Filing: 1970-05-07
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Granted: 1971-09-21
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Expires: 1990-05-07
Abstract
Abstract THE DISCHARGE CHAMBER OF THE HEAT EXCHANGER CELL HAS AN INLET SLOT EXTENDING LENGTHWISE OF THE CHAMBER WHICH HAS AN OPEN DISCHARGED END. A TROUGH-SHAPED BAFFLE EXTENDS ABOVE THE SLOT WITH THE APEX OF THE BAFFLE IN PROXIMITY TO THE SLOT, THE BAFFLE BEING POSITIONED MEDIAL OF THE SIDE WALLS OF THE CHAMBER. ONE END OF THE BAFFLE IS FIXED AT THE OPEN END OF THE CHAMBER. THE SIDES OF THE BAFFLE AT THE OPPOSITE END THEREOF ARE PROVIDED WITH ARCUATE TABS WHICH YIELDINGLY ENGAGE THE SIDE WALLS OF THE CHAMBER. SUCH FRICTIONAL ENGAGEMENT MAINTAINS THE BAFFLE IN PROPER POSITION AND PERMITS EXPANSION AND CONTRACTION OF THE BAFFLE RELATIVE TO THE DISCHARGE CHAMBER OF THE CELL.
Inventors
- 👤 Donald R Smith
- 👤 Adrian V Cavestany
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:04
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/0052; F24H9/14; F24H9/146; F24H1/00; F24H1/22; F24H1/24; F24H1/30; F24H1/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |