US4132360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulsating hair dryer
Assignee: General Electric Co
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Filing: 1977-08-22
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Granted: 1979-01-02
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Expires: 1997-08-22
Abstract
Abstract A pulsating attachment for use with an electric hair dryer that has a tubular end through which air is expelled is described comprising a coupling section with an asymmetrical and unbalanced single impeller supported in the coupling for rotation therein and mounting structure connecting the coupling and the tubular end whereby the expelled air rotates the impeller and, due to its unbalanced mounting, creates a pulsating flow of air at a constant flow rate from the coupling. This results in a rotating path of pulsating air on the head of the user to create a fluffing action.
Inventors
- 👤 Lawrence J. Lee, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:19
CPC Classifications
A; A45; A45D; A45D20/00; A45D20/04; A45D20/08; A45D20/10; A45D20/12; A45D20/122; A45D20/124
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
66 words
A pulsating attachment for use with an electric hair dryer having a tubular end through which air is expelled comprising, a coupling section, an asymmetrical unbalanced single impeller supported in said coupling for rotation therein, and mounting walls connecting said coupling and tubular end, whereby the expelled air rotates said impeller creating a pulsating spiral flow of air at a constant flow rate from the coupling.
Claim 2
Dependent Claim
66 words
A pulsating attachment for use with an electric hair dryer having a tubular end through which air is expelled comprising, a coupling section, an asymmetrical unbalanced single impeller supported in said coupling for rotation therein, and mounting walls connecting said coupling and tubular end, whereby the expelled air rotates said impeller creating a pulsating spiral flow of air at a constant flow rate from the coupling.
Claim 3
Dependent Claim
40 words
Apparatus as described in claim 1 wherein said coupling comprises a clylindrical tube, a hub disposed centrally of the tube, strut means supporting the hub, and said impeller comprising a single fan unbalanced blade supported for rotation on said hub.
Claim 4
Dependent Claim
17 words
Apparatus as described in claim 2 wherein said single fan blade is disposed upstream of the struts.
Claim 5
Dependent Claim
32 words
Apparatus as described in claim 3 wherein said tubular coupling has a peripheral recess on its outer surface at its upstream end for quick disconnect frictional engagement inside said dryer tubular end.
Claim 6
Dependent Claim
29 words
Apparatus as described in claim 3 wherein said single fan blade is disposed to block substantially one quarter of the exit area from said tubular end at all times.
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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) | 1982-01-01 | 1982-07-03 | 1983-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-01 | 1986-07-03 | 1987-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-01 | 1990-07-03 | 1991-01-02 | $7700.00 | Window Closed / Lapsed |