US5157757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hand held hair dryer with selectively positionable baffle for varying the distribution of air from the dryer
Assignee: China Pacific Trade Ltd
•
Filing: 1991-05-14
•
Granted: 1992-10-20
•
Expires: 2011-05-14
Abstract
Abstract A handheld electrically powered hair dryer includes a main outlet nozzle and secondary air outlets for producing a diffuse distribution of air. A baffle arrangement is moveable between first and second positions to selectively deflect some or all of the air from the nozzle to the secondary air outlets. The baffle arrangement consists of a flexible crown-shaped metal foil disposed on the inside of the nozzle, and a mechanism for bending the foil radially inwardly to partially or completely block the nozzle when the baffle is moved toward the second position.
Inventors
- 👤 John G. McDougall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:34
CPC Classifications
A; A45; A45D; A45D20/00; A45D20/04; A45D20/08; A45D20/10; A45D20/12; A45D20/122
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
220 words
A hand held hair dryer comprising a nozzle for directing warm air towards the hair, air outlets in a wall of the hair dryer upstream of the nozzle, and a baffle arrangement which may be selectively set to allow substantially all of the air to flow through the nozzle or to deflect substantially all of the air away from the nozzle and out through the air outlets, the baffle arrangement comprising a flexible metal foil having the shape of a segmented crown, each segment having a flexible apex with the apices being directed in an axial direction and the crown being disposed circumferentially outwardly about the inside wall of the nozzle so as to leave a substantially unobstructed central passage through the crown for air flow through the nozzle, a guide element located with the nozzle in axial alignment with the segmented crown and shaped to deflect the apices of the crown towards the center of the nozzle, and a mechanism for selectively causing relative axial movement of the metal foil baffle element and the guide element so that the crown may be moved towards the guide element and the apices deflected by the guide element radially inwardly into an overlapping relationship to close off the central passage through the baffle arrangement and deflect the air towards the air outlets.
Claim 2
Dependent Claim
220 words
A hand held hair dryer comprising a nozzle for directing warm air towards the hair, air outlets in a wall of the hair dryer upstream of the nozzle, and a baffle arrangement which may be selectively set to allow substantially all of the air to flow through the nozzle or to deflect substantially all of the air away from the nozzle and out through the air outlets, the baffle arrangement comprising a flexible metal foil having the shape of a segmented crown, each segment having a flexible apex with the apices being directed in an axial direction and the crown being disposed circumferentially outwardly about the inside wall of the nozzle so as to leave a substantially unobstructed central passage through the crown for air flow through the nozzle, a guide element located with the nozzle in axial alignment with the segmented crown and shaped to deflect the apices of the crown towards the center of the nozzle, and a mechanism for selectively causing relative axial movement of the metal foil baffle element and the guide element so that the crown may be moved towards the guide element and the apices deflected by the guide element radially inwardly into an overlapping relationship to close off the central passage through the baffle arrangement and deflect the air towards the air outlets.
Claim 3
Dependent Claim
99 words
A hand held hair dryer in accordance with claim 1 wherein the air outlets comprise secondary air outlets for producing a diffuse distribution of air flowing to the hair and air vents for directing air away from the hair and wherein a further baffle arrangement is provided for the secondary air outlets, said further baffle arrangement comprising a baffle element movable between a first position in which the baffle element leaves a substantially unobstructed passage for air flow through the secondary air outlets, and a second position in which the baffle element substantially closes off the secondary air outlets.
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) | 1995-10-20 | 1996-04-20 | 1996-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-20 | 2000-04-20 | 2000-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-20 | 2004-04-20 | 2004-10-20 | $7700.00 | Window Closed / Lapsed |