US3291028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffuser
Assignee: Wehr Corp
•
Filing: 1964-03-31
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Granted: 1966-12-13
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Expires: 1984-03-31
Abstract
No abstract record available.
Inventors
- 👤 Gordon C Sylvester
- 👤 John F Newell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:33
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/06; F24F13/062; F24F2013/0616
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
163 words
THE COMBINATION OF A DIFFUSER AND DUCT MEANS ADAPTED TO ACCOMMODATE ADJACENT OPPOSITELY FLOWING AIR STREAMS WHICH ARE AT RELATIVELY DIFFERENT TEMPERATURES AND TO DELIVER AIR AT ONE TEMPERATURE TO AN AREA TO BE CONDITIONED AND RECEIVE RETURN AIR FROM SAID AREA AT A DIFFERENT TEMPERATURE, SAID COMBINATION COMPRISING, DUCT MEANS DEFINING FIRST AND SECOND ADJACENT PASSAGES ACCOMMODATING SAID OPPOSITELY FLOWING AIR STREAMS AND INCLUDING COMMON DUCT MEANS SEPARATING SAID PASSAGES, FIRST MEANS IN REGISTRY WITH SAID FIRST PASSAGE AND DEFINING AN ENTRANCE END TO SAID FIRST PASSAGE FOR SAID RETURN FLOW, SECOND MEANS ADJACENT TO SAID FIRST MEANS AND IN REGISTRY WITH SAID SECOND PASSAGE DEFINING A DISCHARGE END FROM SAID SECOND PASSAGE FOR SUPPLY AIR FLOW, BAFFLE MEANS POSITIONED BETWEEN SAID ENTRANCE AND DISCHARGE ENDS AND PRESENTED TO RETURN FLOW INTO SAID FIRST PASSAGE, AND MEANS ADJACENT TO SAID DISCHARGE AND ENTRANCE ENDS BUT SPACED FROM SAID DISCHARGE AND ENTRANCE ENDS IN A DIRECTION INTO SAID FIRST AND SECOND PASSAGES AND
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) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |