US3618508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air mixing apparatus
Assignee: Krueger Manufacturing Co Inc
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Filing: 1970-02-27
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Granted: 1971-11-09
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Expires: 1990-02-27
Abstract
Abstract A PAIR OF DISCS MOUNTED IN SPACED APART RELATION ARE MOUNTED FOR ROTATION ABOUT AN AXIS AND ARE ENCLOSED WITHIN A BOX STRUCTURE. THE ENCLOSURE INCLUDES OPENINGS FOR RECEIVING INLET AIR TO BE MIXED AND AN OUTLET OPENING FOR THE MIXED AIR, THE ENCLOSURE ALSO INCLUDES A VENT OPENING FOR RETURNING OR "DUMPING" UNDELIVERED CONDITIONED AIR TO THE CONDITIONING SYSTEM. A PLURALITY OF BAFFLES ARE MOUNTED BETWEEN THE DISCS AND ARE POSITIONED TO OPEN AND CLOSE THE VARIOUS OPENINGS IN THE ENCLOSURE IN ACCORDANCE WITH THE ANGULAR POSITION OF THE DISCS.
Inventors
- 👤 Richard D Tutt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:16
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/04; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86509; Y10T137/86517; Y10T137/86525
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |