US4112591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hair dryer
Assignee: Individual
•
Filing: 1975-05-19
•
Granted: 1978-09-12
•
Expires: 1995-05-19
Abstract
Abstract A high speed hair dryer using an oversized pliable perforated hood that collapses about the hairdo on application of suction to the inside of the hood. Drying occurs as the air drawn through the hood perforations passes through the hairdo, enroute to suction tube openings connecting to the inside of the hood. The hood-and-suction-tube structure is pliable enough to conform completely to random irregular configurations of hair-wrapped curlers; every suction tube opening can be positioned onto a hair-wrapped curler, thus precluding loss of suction force in random areas of the hairdo. The speed of drying is such that the dryer uses substantially less electrical energy than that used by conventional dryers.
Inventors
- 👤 Charles W. Marsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:09
CPC Classifications
A; A45; A45D; A45D20/00; A45D20/04; A45D20/08; A45D20/16; A45D20/18; A45D20/44
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
222 words
Hair drying apparatus comprising: a pliable membrane having an inner hair-engaging surface and an outer surface; said membrane including a multiplicity of spaced perforations dispersed throughout the hair-engaging area of said membrane for communication between said inner and outer surfaces, said hair-engaging area being large enough to closely conform to a complex hair configuration on the user's head; and means for maintaining a pressure differential between said inner and outer surfaces comprising a peripheral head-gripping portion on said membrane, subambient pressure means outside of said membrane, and conduit means for providing communication of the subambient pressure with the inner surface of said membrane, said conduit means including multiple suction conduits, said conduit means communicating with the inner surface of said membrane through air inlet means comprising multiple air inlets, wherein there is sufficient pliability of the combined structure of said membrane and said conduit means to assure that all such air inlets, simultaneously, are positionable onto hair-wrapped curlers of random sizes wherein said hair-wrapped curlers are randomly positioned on the user's head, wherein said multiple suction conduits are flexible and communicate with the inner surface of said membrane, wherein such suction conduits are located away from the periphery of said membrane, and wherein all such suction conduits are joined directly to an intermediate conduit means located in spaced relation to said membrane.
Claim 2
Dependent Claim
222 words
Hair drying apparatus comprising: a pliable membrane having an inner hair-engaging surface and an outer surface; said membrane including a multiplicity of spaced perforations dispersed throughout the hair-engaging area of said membrane for communication between said inner and outer surfaces, said hair-engaging area being large enough to closely conform to a complex hair configuration on the user's head; and means for maintaining a pressure differential between said inner and outer surfaces comprising a peripheral head-gripping portion on said membrane, subambient pressure means outside of said membrane, and conduit means for providing communication of the subambient pressure with the inner surface of said membrane, said conduit means including multiple suction conduits, said conduit means communicating with the inner surface of said membrane through air inlet means comprising multiple air inlets, wherein there is sufficient pliability of the combined structure of said membrane and said conduit means to assure that all such air inlets, simultaneously, are positionable onto hair-wrapped curlers of random sizes wherein said hair-wrapped curlers are randomly positioned on the user's head, wherein said multiple suction conduits are flexible and communicate with the inner surface of said membrane, wherein such suction conduits are located away from the periphery of said membrane, and wherein all such suction conduits are joined directly to an intermediate conduit means located in spaced relation to said membrane.
Claim 3
Dependent Claim
29 words
Apparatus according to claim 1 wherein each of said suction conduits is generally elongated and terminates at said membrane, thereby defining a single air inlet for each suction conduit.
Claim 4
Dependent Claim
210 words
Hair drying apparatus comprising: a pliable membrane having an inner hair-engaging surface and an outer surface; said membrane including a multiplicity of spaced perforations dispersed throughout the hair-engaging area of said membrane for communiction between said inner and outer surfaces, said hair-engaging area being large enough to closely conform to a complex hair configuration on the user's head; and means for maintaining a pressure differential between said inner and outer surfaces comprising a peripheral head-gripping portion on said membrane, subambient pressure means outside of said membrane, and conduit means for providing communication of the subambient pressure with the inner surface of said membrane, said conduit means including intermediate conduit means and a single suction conduit, said suction conduit communicating with the inner surface of said membrane through air inlet means comprising a single air inlet, wherein the improvement comprises: said suction conduit being located away from the periphery of said membrane, said suction conduit joining directly to said intermediate conduit means, said intermediate conduit means being located in spaced relation to said membrane, wherein the combined structure of said suction conduit and said intermediate conduit means is flexible to allow positioning of said air inlet onto a hair-wrapped curler of any random configuration of hair-wrapped curlers on the user's head.
Claim 5
Dependent Claim
210 words
Hair drying apparatus comprising: a pliable membrane having an inner hair-engaging surface and an outer surface; said membrane including a multiplicity of spaced perforations dispersed throughout the hair-engaging area of said membrane for communiction between said inner and outer surfaces, said hair-engaging area being large enough to closely conform to a complex hair configuration on the user's head; and means for maintaining a pressure differential between said inner and outer surfaces comprising a peripheral head-gripping portion on said membrane, subambient pressure means outside of said membrane, and conduit means for providing communication of the subambient pressure with the inner surface of said membrane, said conduit means including intermediate conduit means and a single suction conduit, said suction conduit communicating with the inner surface of said membrane through air inlet means comprising a single air inlet, wherein the improvement comprises: said suction conduit being located away from the periphery of said membrane, said suction conduit joining directly to said intermediate conduit means, said intermediate conduit means being located in spaced relation to said membrane, wherein the combined structure of said suction conduit and said intermediate conduit means is flexible to allow positioning of said air inlet onto a hair-wrapped curler of any random configuration of hair-wrapped curlers on the user's head.
Claim 6
Dependent Claim
168 words
Hair drying apparatus comprising: a pliable membrane having an inner hair-engaging surface and an outer surface; said membrane including a multiplicity of spaced perforations dispersed throughout the hair-engaging area of said membrane for communication between said inner and outer surfaces, said hair-engaging area being large enough to closely conform to a complex hair configuration on the user's head; and means for maintaining a pressure differential between said inner and outer surfaces comprising a peripheral head-gripping portion on said membrane, subambient pressure means outside of said membrane, and conduit means for providing communication of the subambient pressure with the inner surface of said membrane, said conduit means comprising intermediate conduit means and multiple suction conduits, said conduit means communicating with the inner surface of said membrane through air inlet means comprising multiple air inlets, wherein all such suction conduits are joined directly to said intermediate conduit means, wherein said intermediate conduit means is located in substantial spaced relationship to the peripheral portion of said hair-engaging area of said membrane.
Claim 7
Dependent Claim
168 words
Hair drying apparatus comprising: a pliable membrane having an inner hair-engaging surface and an outer surface; said membrane including a multiplicity of spaced perforations dispersed throughout the hair-engaging area of said membrane for communication between said inner and outer surfaces, said hair-engaging area being large enough to closely conform to a complex hair configuration on the user's head; and means for maintaining a pressure differential between said inner and outer surfaces comprising a peripheral head-gripping portion on said membrane, subambient pressure means outside of said membrane, and conduit means for providing communication of the subambient pressure with the inner surface of said membrane, said conduit means comprising intermediate conduit means and multiple suction conduits, said conduit means communicating with the inner surface of said membrane through air inlet means comprising multiple air inlets, wherein all such suction conduits are joined directly to said intermediate conduit means, wherein said intermediate conduit means is located in substantial spaced relationship to the peripheral portion of said hair-engaging area of said membrane.
Claim 8
Dependent Claim
28 words
Apparatus according to claim 4 wherein all such suction conduits are located, entirely, in substantial spaced relationship to the peripheral portion of said hair-engaging area of said membrane.
Claim 9
Dependent Claim
32 words
Apparatus according to claim 4 wherein each of said suction conduits is generally elongated and terminates at said membrane, so that a single air inlet is defined for each such suction conduit.
Claim 10
Dependent Claim
20 words
Apparatus according to claim 4 wherein each of said suction conduits terminates at said membrane in a substantially transverse opening.
Claim 11
Dependent Claim
53 words
Apparatus according to claim 4 wherein all such suction conduits are located, entirely, in sustantial spaced relationship to the peripheral portion of said hair-engaging area, and wherein each of said suction conduits is generally elongated and terminates at said membrane, so that a single air inlet is defined for each such suction conduit.
Claim 12
Dependent Claim
59 words
Apparatus according to claim 4 wherein a non-perforated membrane area encircles each air inlet such that the distance, measured along the membrane surface, from any peripheral point of each such air inlet to the nearest perforation is at least 10 times as great as each and every center to center distance, measured along the membrane surface, between adjacent perforations.
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) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |