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US4391047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hand-held hair dryer
Assignee: USPHILIPS Corp A CORP OF DE
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Filing: 1980-03-17
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Granted: 1983-07-05
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Expires: 2000-03-17
Abstract
Abstract An attachment formed of a flexible material is provided for use with a hair dryer having an air discharge nozzle, the attachment being expandable in use from a collapsed position to an expanded shape. It comprises an imperforate funnel-shaped wall portion open at both ends, the small end being connectable to the air discharge nozzle. An outer end wall provided with outlet openings extends across the larger end of the funnel-shaped wall portion and is connectable thereto. Flexible strips situated within the funnel-shaped wall portion connect the central portion of the outer end wall to the small end of the funnel-shaped wall portion and serve to maintain the outer end wall in its expanded shape during use.
Inventors
- 👤 Wilhelmus G. E. Janssens
- 👤 Heinz Merges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:26
CPC Classifications
A; A45; A45D; A45D20/00; A45D20/04; A45D20/08; A45D20/10; A45D20/12; A45D20/122
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
137 words
An attachment formed of a substantially flexible material for use with a hair dryer having an air discharge nozzle, said attachment being expandable in use from a collapsed position to an expanded shape, which comprises an imperforate funnel-shaped wall portion open at both ends; means to connect the small end of said funnel-shaped wall portion to the air discharge nozzle; an outer end wall extending across the larger end of said funnel-shaped wall portion and being connected thereto, said outer end wall being provided with a plurality of outlet openings; and a plurality of flexible strips situated within the funnel-shaped wall portion and connecting the central portion of the outer end wall to the small end of the funnel-shaped wall portion, said flexible strips serving to maintain the outer end wall in its expanded shape during use.
Claim 2
Dependent Claim
137 words
An attachment formed of a substantially flexible material for use with a hair dryer having an air discharge nozzle, said attachment being expandable in use from a collapsed position to an expanded shape, which comprises an imperforate funnel-shaped wall portion open at both ends; means to connect the small end of said funnel-shaped wall portion to the air discharge nozzle; an outer end wall extending across the larger end of said funnel-shaped wall portion and being connected thereto, said outer end wall being provided with a plurality of outlet openings; and a plurality of flexible strips situated within the funnel-shaped wall portion and connecting the central portion of the outer end wall to the small end of the funnel-shaped wall portion, said flexible strips serving to maintain the outer end wall in its expanded shape during use.
Claim 3
Dependent Claim
50 words
An attachment according to claim 1, in which the small end of the funnel-shaped wall portion engages the exterior surface of the air discharge nozzle, and said connecting means includes an elastic band holding the funnel-shaped wall portion small end in tight engagement with the air discharge nozzle exterior surface.
Claim 4
Dependent Claim
49 words
An attachment according to claim 1, in which said connecting means includes a tubular section for sliding engagement with the exterior surface of the air discharge nozzle, and an elastic band holding the funnel-shaped wall portion small end in tight engagement with the exterior surface of the tubular section.
Claim 5
Dependent Claim
37 words
An attachment according to claim 3, in which the central portion of the outer end wall is disc-shaped and non-flexible and constitutes an end closure for the tubular section when the attachment is in its collapsed position.
Claim 6
Dependent Claim
35 words
An attachment according to claim 1, 2, 3 or 4, in which the total area of the outlet openings in the outer end wall is greater than the cross-sectional area of the air discharge nozzle.
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) | 1986-07-04 | 1987-01-03 | 1987-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-04 | 1991-01-03 | 1991-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-04 | 1995-01-03 | 1995-07-05 | $7700.00 | Window Closed / Lapsed |