US3885127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hand held hair drying appliance
Assignee: P&G Hair Care Holding Inc
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Filing: 1973-02-28
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Granted: 1975-05-20
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Expires: 1993-02-28
Abstract
Abstract A hand held hair drying appliance particularly useful in the styling or shaping of hair including a tubular housing having two spaced inlets, an outlet disposed between the two inlets and a tubular handle portion formed by said housing; a heating element disposed in the housing between the inlets; first and second fans arranged in the housing to force air from the inlets toward the outlet; the first and second fans each having blades extending radially from the axis of rotation, the blades of the first fan having a pitch opposite the pitch of the blades of the second fan such that the first and second fans form oppositely directed currents of air when rotated in the same direction; and a motor disposed in the handle for driving the fans whereby air is drawn into the housing through the inlets, moved past the heating element and expelled through the outlet in a direction transverse to the axis of the housing for drying hair.
Inventors
- 👤 Henry J Walter
- 👤 Eugene T Fleischhauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:59
CPC Classifications
A; A45; A45D; A45D20/00; A45D20/04; A45D20/08; A45D20/10
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
187 words
A hand held hair drying appliance comprising a tubular housing having first inlet means therein, second inlet means therein spaced from said first inlet means, outlet means in the peripheral wall of said housing and disposed between said first and second inlet means and a tubular handle portion formed by said housing; heating means disposed in said housing between said first and second inlet means; first and second fans arranged in said housing to force air from said first and second inlet means toward said outlet means; said first and second fans each having blades extending radially from the axis of rotation thereof, said blades of said first fan having a pitch opposite the pitch of said blades of said second fan such that said first and second fans form oppositely directed currents of air when rotated in the same direction; and motor means disposed in said handle for driving said first and second fans whereby air is drawn into said housing through said first and second inlet means, moved past said heating means and expelled through said outlet means to provide heated air for drying hair.
Claim 2
Dependent Claim
187 words
A hand held hair drying appliance comprising a tubular housing having first inlet means therein, second inlet means therein spaced from said first inlet means, outlet means in the peripheral wall of said housing and disposed between said first and second inlet means and a tubular handle portion formed by said housing; heating means disposed in said housing between said first and second inlet means; first and second fans arranged in said housing to force air from said first and second inlet means toward said outlet means; said first and second fans each having blades extending radially from the axis of rotation thereof, said blades of said first fan having a pitch opposite the pitch of said blades of said second fan such that said first and second fans form oppositely directed currents of air when rotated in the same direction; and motor means disposed in said handle for driving said first and second fans whereby air is drawn into said housing through said first and second inlet means, moved past said heating means and expelled through said outlet means to provide heated air for drying hair.
Claim 3
Dependent Claim
35 words
A hand held hair drying appliance as recited in claim 1 wherein said motor means includes a common drive shaft fixed to said first and second fans and a single motor rotating said drive shaft.
Claim 4
Dependent Claim
50 words
A hand held hair drying appliance as recited in claim 2 wherein said outlet means is formed by at least one longitudinally extending slot in the periphery of said housing such that heated air is expelled from said outlet means in a direction transverse to the axis of said housing.
Claim 5
Dependent Claim
35 words
A hand held hair drying appliance as recited in claim 3 wherein said first and second fans provide oppositely directed currents of air through said first and second inlet means toward said outlet means, respectively.
Claim 6
Dependent Claim
18 words
A hand held hair drying appliance as recited in claim 4 wherein said housing has a cylindricAl configuration.
Claim 7
Dependent Claim
41 words
A hand held hair drying appliance as recited in claim 5 wherein said first inlet means is formed by openings in the periphery of said housing and said second inlet means is formed by openings in an end of said housing.
Claim 8
Dependent Claim
66 words
A hand held hair drying appliance as recited in claim 6 wherein said housing includes an end cap rotatably mounting an end of said common drive shaft adjacent said second inlet means and an adaptor rotatably mounting said common drive shaft adjacent said first inlet means and having an arcuate configuration to channel air from said openings forming said first inlet means toward said outlet means.
Claim 9
Dependent Claim
94 words
A hand held hair drying appliance as recited in claim 7 wherein said housing includes a head having a cylindrical configuration with said end cap mounted at one end thereof and a handle having a cylindrical configuration with a diameter less than the diameter of said head, said head being connected with said handle by a neck at an opposite end, said openings forming said first inlet means being disposed adjacent said neck, said openings forming said second inlet means being disposed in said end cap and said motor being disposed in said handle.
Claim 10
Dependent Claim
18 words
A hand held hair drying appliance as recited in claim 1 wherein said housing has a cylindrical configuration.
Claim 11
Dependent Claim
54 words
A hand held hair drying appliance as recited in claim 1 wherein said first and second fans provide oppositely direction currents of air through said first and second inlet means toward said outlet means, respectively, the air expelled from said outlet means being forced in a direction transverse to the axis of said housing.
Claim 12
Dependent Claim
36 words
A hand held hair drying appliance as recited in claim 1 wherein said motor means includes a common drive shaft fixed to said first and second fans and a single electric motor rotating said drive shaft.
Claim 13
Dependent Claim
197 words
A hand held hair drying appliance comprising a tubular housing having first and second spaced inlet opening means therein for passage of air drawn into said housing, outlet opening means in the peripheral wall of said housing and disposed in said space between said first and second inlet opening means for passage of air expelled from said housing and a tubular handle portion formed by said housing; heating means disposed in said housing in said space between said first and second inlet opening means adjacent said outlet opening means for heating air expelled from said housing; and blower means disposed in said housing for drawing a first current of air into said housing through said first inlet opening means and directing said first air current toward said outlet opening means for drawing a second current of air into said housing through said second inlet opening means and directing said second air current toward said outlet opening means, said first and second air currents extending axially along said tubular housing in opposite directions, and for expelling said first and second air currents past said heating means through said outlet opening means to provide heated air for drying hair.
Claim 14
Dependent Claim
197 words
A hand held hair drying appliance comprising a tubular housing having first and second spaced inlet opening means therein for passage of air drawn into said housing, outlet opening means in the peripheral wall of said housing and disposed in said space between said first and second inlet opening means for passage of air expelled from said housing and a tubular handle portion formed by said housing; heating means disposed in said housing in said space between said first and second inlet opening means adjacent said outlet opening means for heating air expelled from said housing; and blower means disposed in said housing for drawing a first current of air into said housing through said first inlet opening means and directing said first air current toward said outlet opening means for drawing a second current of air into said housing through said second inlet opening means and directing said second air current toward said outlet opening means, said first and second air currents extending axially along said tubular housing in opposite directions, and for expelling said first and second air currents past said heating means through said outlet opening means to provide heated air for drying hair.
Claim 15
Dependent Claim
29 words
A hand held hair drying appliance as recited in claim 12 wherein said blower means includes first and second axially aligned fans having radially extending blades with opposite pitches.
References Cited (Backward Citations)
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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) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |