Patent US2861233A successfully refreshed from Google Patents.
US3280901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fan heater unit
Assignee: LAING VORTEX Inc
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Filing: 1965-08-03
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Granted: 1966-10-25
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Expires: 1985-08-03
Abstract
No abstract record available.
Inventors
- 👤 Laing Nikolaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:33
CPC Classifications
F; F28; F28D; F28D1/00; F28D1/02; F28D1/0233; F28D1/024; F04; F04D; F04D17/00; F04D17/02; F04D17/04; Y; Y10; Y10S; Y10S165/00; Y10S165/228; Y10S165/302; Y10S165/311; Y10S165/313
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
A SPACE HEATER COMPRISING A CASING HAVING AN INLET AND AN OUTLET ON THE SAME SIDE OF THE CASING, BLADED CYLINDRICAL ROTOR MEANS MOUNTED HORIZONTALLY WITHIN THE CASING FOR ROTATION ABOUT ITS AXIS AND DEFINING AN INTERIOR SPACE, A MOTOR FOR ROTATION OF SAID ROTOR IN A PREDETERMINED DIRECTION, GUIDE MEANS WITHIN THE CASING DEFINING WITH THE ROTOR MEANS A SUCTION REGION COMMUNICATING WITH THE INLET AND A PRESSURE REGION COMMUNICATING WITH THE OUTLET, HEATING MEANS MOUNTED WITHIN THE CASING AND EXTENDING THE LENGTH OF THE ROTR MEANS ON THEPRESSURE SIDE THEREOF, THE GUIDE MEANS AND ROTOR COOPERATING ON ROTATION OF THE LATTER BY SAID MOTOR IN SAID PRE DETERMINED DIRECTION TO INDUCE A FLOW OF AIR THROUGH THE INLET TO THE SUCTION REGION AN THENCE THROUGH THE PATH OF THE ROTATING BLADES OF THE ROTOR TO THE INTERIOR SPACE AND THENCE AGAIN THROUGH THE PATH OF THE ROTATING BLADES OF THE ROTOR TO THE PRESSURE REGION AND PAST THE HEATING MEANS TO THE OUTLET.
Claim 2
Dependent Claim
165 words
A SPACE HEATER COMPRISING A CASING HAVING AN INLET AND AN OUTLET ON THE SAME SIDE OF THE CASING, BLADED CYLINDRICAL ROTOR MEANS MOUNTED HORIZONTALLY WITHIN THE CASING FOR ROTATION ABOUT ITS AXIS AND DEFINING AN INTERIOR SPACE, A MOTOR FOR ROTATION OF SAID ROTOR IN A PREDETERMINED DIRECTION, GUIDE MEANS WITHIN THE CASING DEFINING WITH THE ROTOR MEANS A SUCTION REGION COMMUNICATING WITH THE INLET AND A PRESSURE REGION COMMUNICATING WITH THE OUTLET, HEATING MEANS MOUNTED WITHIN THE CASING AND EXTENDING THE LENGTH OF THE ROTR MEANS ON THEPRESSURE SIDE THEREOF, THE GUIDE MEANS AND ROTOR COOPERATING ON ROTATION OF THE LATTER BY SAID MOTOR IN SAID PRE DETERMINED DIRECTION TO INDUCE A FLOW OF AIR THROUGH THE INLET TO THE SUCTION REGION AN THENCE THROUGH THE PATH OF THE ROTATING BLADES OF THE ROTOR TO THE INTERIOR SPACE AND THENCE AGAIN THROUGH THE PATH OF THE ROTATING BLADES OF THE ROTOR TO THE PRESSURE REGION AND PAST THE HEATING MEANS TO THE OUTLET.
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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |