US3348020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hand-held electric hair dryer
Assignee: FCF Ltd A Co OF BRITISH
•
Filing: 1965-01-25
•
Granted: 1967-10-17
•
Expires: 1985-01-25
Abstract
No abstract record available.
Inventors
- 👤 Cooper Brian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:43
CPC Classifications
F; F24; F24H; F24H3/00; F24H3/02; F24H3/04; F24H3/0405; F24H3/0423; A; A45; A45D; A45D20/00; A45D20/04; A45D20/08; A45D20/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A HAND-HELD HAIR DRYER FOR USE WITH ALTERNATING CURRENT LINE VOLTAGE OF NORMALLY AT LEAST 110 VOLTS, COMPRISING A CASING OF A SIZE TO BE HELD IN THE PALM OF THE HAND OF THE USER, SAID CASING HAVING AN INLET AND AN OUTLET, AN ELECTRIC HEATER ELEMENT MOUNTED IN SAID CASING AND CONNECTED TO BE ENERGIZED BY LINE VOLTAGE, A FAN TO CAUSE A FLOW OF AIR BETWEEN INLET AND OUTLET OVER SAID HEATER ELEMENT, PERMANENT MAGNET, FIRECT CURRENT MOTOR OF MINIMUM NOMINAL SPEED IN THE ORDER OF 6,000 R.P.M. AND DIRECTLY DRIVING SAID FAN AND OPERATING AT A SMALL FRACTION ONLY OF THE LINE VOLTAGE AND IN THE ORDER OF 6-24 VOLTS, AND A RECTIFIER CONNECTED WITH SAID MOTOR AND ACROSS A PORTION OF SAID HEATING ELEMENT, SAID HEATING ELEMENT ACTING AS A VOLTAGE DROPPER FOR THE MOTOR.
Claim 2
Dependent Claim
139 words
A HAND-HELD HAIR DRYER FOR USE WITH ALTERNATING CURRENT LINE VOLTAGE OF NORMALLY AT LEAST 110 VOLTS, COMPRISING A CASING OF A SIZE TO BE HELD IN THE PALM OF THE HAND OF THE USER, SAID CASING HAVING AN INLET AND AN OUTLET, AN ELECTRIC HEATER ELEMENT MOUNTED IN SAID CASING AND CONNECTED TO BE ENERGIZED BY LINE VOLTAGE, A FAN TO CAUSE A FLOW OF AIR BETWEEN INLET AND OUTLET OVER SAID HEATER ELEMENT, PERMANENT MAGNET, FIRECT CURRENT MOTOR OF MINIMUM NOMINAL SPEED IN THE ORDER OF 6,000 R.P.M. AND DIRECTLY DRIVING SAID FAN AND OPERATING AT A SMALL FRACTION ONLY OF THE LINE VOLTAGE AND IN THE ORDER OF 6-24 VOLTS, AND A RECTIFIER CONNECTED WITH SAID MOTOR AND ACROSS A PORTION OF SAID HEATING ELEMENT, SAID HEATING ELEMENT ACTING AS A VOLTAGE DROPPER FOR THE MOTOR.
References Cited (Backward Citations)
US2717969A
Cited
US3219261A
Cited
US3284611A
Cited
US3260442A
Cited
US3147368A
Cited
US3264450A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |