Patent US3197969A successfully refreshed from Google Patents.
US3197969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating and cooling of air for ventilating, warming and refrigerating purposes
Assignee: Kinematics Ltd
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Filing: 1964-02-24
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Granted: 1965-08-03
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Expires: 1984-02-24
Abstract
No abstract record available.
Inventors
- 👤 Over Charles Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:56
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/30; F24F11/70; F24F11/72; F24F11/74; F24F5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
AIR-HEATING AND COOLING APPARATUS, COMPRISING: A VOLUTE CHAMBER HAVING AN INLET WHICH OPENS TANGENTIALLY INTO A CIRCUMFERENTIAL REGION THEREOF, A WARM AIR OUTLET IN ONE END WALL THEREOF AND A COLD AIR OUTLET IN ITS OTHER END WALL OF SUBSTANTIALLY SMALLER FLOW AREA THAN THE WARM AIR OUTLET, BOTH OF SAID OUTLETS BEING IN COMMUNICATION WITH A CENTRAL REGION OF SAID VOLUTE CHAMBER; MEANS FOR SUPPLYING COMPRESSED AIR TO THE CIRCUMFERENTIAL REGION OF THE VOLUTE CHAMBER THROUGH THE INLET THEREOF; AND A RING OF GUIDE VANES ARRANGED WITHIN THE VOLUTE CHAMBER IN AN ANNULAR ZONE BETWEEN THE CIRCUMFERENTIAL AND CENTRAL REGIONS THEREOF, THE INDIVIDUAL GUIDE VANES OF SAID GUIDE VANES RING BEING INCLINED SO AS TO REFLECT AIR FROM THE CIRCUMFERENTIAL REGION INTO THE CENTRAL ZONE
Claim 2
Dependent Claim
126 words
AIR-HEATING AND COOLING APPARATUS, COMPRISING: A VOLUTE CHAMBER HAVING AN INLET WHICH OPENS TANGENTIALLY INTO A CIRCUMFERENTIAL REGION THEREOF, A WARM AIR OUTLET IN ONE END WALL THEREOF AND A COLD AIR OUTLET IN ITS OTHER END WALL OF SUBSTANTIALLY SMALLER FLOW AREA THAN THE WARM AIR OUTLET, BOTH OF SAID OUTLETS BEING IN COMMUNICATION WITH A CENTRAL REGION OF SAID VOLUTE CHAMBER; MEANS FOR SUPPLYING COMPRESSED AIR TO THE CIRCUMFERENTIAL REGION OF THE VOLUTE CHAMBER THROUGH THE INLET THEREOF; AND A RING OF GUIDE VANES ARRANGED WITHIN THE VOLUTE CHAMBER IN AN ANNULAR ZONE BETWEEN THE CIRCUMFERENTIAL AND CENTRAL REGIONS THEREOF, THE INDIVIDUAL GUIDE VANES OF SAID GUIDE VANES RING BEING INCLINED SO AS TO REFLECT AIR FROM THE CIRCUMFERENTIAL REGION INTO THE CENTRAL ZONE
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) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |