US3322932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable electric fan heater
Assignee: LAING VORTEX Inc
•
Filing: 1965-07-26
•
Granted: 1967-05-30
•
Expires: 1985-07-26
Abstract
No abstract record available.
Inventors
- 👤 Laing Nikolaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:57
CPC Classifications
F; F24; F24H; F24H3/00; F24H3/02; F24H3/04; F24H3/0405; F24H3/0411; F24H3/0417
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A FAN HEATER COMPRISING A SUBSTANTIALLY RECTANGULAR CASING HAVING A TOP WALL, A FLAT BOTTOM WALL, A REAR WALL AND A FRONT WALL, AN AIR INLET IN SAID FRONT, TOP AND REAR WALLS, A RECTANGULAR OUTLET IN SAID FRONT WALL, AN ELECTRIC MOTOR DRIVEN CYLINDRICAL BLADED ROTOR OF THE CROSS-FLOW TYPE EXTENDING THE LENGTH OF AND DISPOSED IN ALIGNMENT WITH AND PARALLEL TO SAID OUTLET, SAID ROTOR DEFINING AN INTERIOR SPACE CLEAR OF STATIONERY GUIDES, A PAIR OF GUIDE WALLS EXTENDING THE LENGTH OF THE ROTOR AND SPACED EXTERIORLY THEREOF AND AT OPPOSITE SIDES THEREOF WITH ONE OF SAID GUIDE WALLS EXTENDING UPWARDLY FROM SAID BUTTOM WALL, HEATER MEANS POSITIONED BETWEEN THE ROTOR AND THE OUTLET AND EXTENDING THE WIDTH OF SAID OUTLET WITH THE ROTOR AND GUIDE WALLS BEING POSITIONED DIRECTLY OPPOSITE THE OUTLET AND DISPOSED FOR DIRECT EJECTION OF AIR
Claim 2
Dependent Claim
142 words
A FAN HEATER COMPRISING A SUBSTANTIALLY RECTANGULAR CASING HAVING A TOP WALL, A FLAT BOTTOM WALL, A REAR WALL AND A FRONT WALL, AN AIR INLET IN SAID FRONT, TOP AND REAR WALLS, A RECTANGULAR OUTLET IN SAID FRONT WALL, AN ELECTRIC MOTOR DRIVEN CYLINDRICAL BLADED ROTOR OF THE CROSS-FLOW TYPE EXTENDING THE LENGTH OF AND DISPOSED IN ALIGNMENT WITH AND PARALLEL TO SAID OUTLET, SAID ROTOR DEFINING AN INTERIOR SPACE CLEAR OF STATIONERY GUIDES, A PAIR OF GUIDE WALLS EXTENDING THE LENGTH OF THE ROTOR AND SPACED EXTERIORLY THEREOF AND AT OPPOSITE SIDES THEREOF WITH ONE OF SAID GUIDE WALLS EXTENDING UPWARDLY FROM SAID BUTTOM WALL, HEATER MEANS POSITIONED BETWEEN THE ROTOR AND THE OUTLET AND EXTENDING THE WIDTH OF SAID OUTLET WITH THE ROTOR AND GUIDE WALLS BEING POSITIONED DIRECTLY OPPOSITE THE OUTLET AND DISPOSED FOR DIRECT EJECTION OF AIR
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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) | 1970-05-29 | 1970-11-28 | 1971-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-29 | 1974-11-28 | 1975-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-29 | 1978-11-28 | 1979-05-30 | $7700.00 | Window Closed / Lapsed |