US3666915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam or dry hair curler heating apparatus
Assignee: Nortel Networks Ltd
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Filing: 1970-07-13
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Granted: 1972-05-30
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Expires: 1990-07-13
Abstract
Abstract A hair curler heating apparatus providing combined heating effects so that hair curlers can be, in accordance with the preference of the user, selectively heated solely by dry heat from within or can be heated from within by dry heat and simultaneously heated from the outside by means of heated water vapor or steam to provide damp curler. The apparatus includes an electrically heated metallic base having a peripheral lip surrounding a flat, upwardly directed, water receiving, retaining and evaporating area to which a plurality of curler supporting mandrels are secured. A non-metallic chassis and housing structure to which the peripheral lip is attached in water-tight relationship supports the metallic base. A removable cover overlies the upwardly directed area and normally encloses the mandrels and any curlers thereon for retaining heated air and/or water vapor thereabout so that the curlers can be selectively heated with or without the presence of heated water vapor. A measuring cup sized to introduce an appropriate quantity of water to the upwardly directed area is provided.
Inventors
- 👤 Robert A De Napoli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:03
CPC Classifications
A; A45; A45D; A45D4/00; A45D4/16
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
142 words
Hair curling apparatus comprising: a. a horizontal base having a peripheral lip surrounding an upwardly directed area for receiving, retaining and evaporating a quantity of water; b. a non-metallic chassis to which said lip is attached; c. water-tight sealing means between said lip and said chassis along the entire length of said lip; d. a number of mandrels secured to said base in heat transfer relation to said base and extending upwardly from said area, each of said mandrels having a construction for transferring heat to a hair curler received thereon; e. means secured to said base for applying heat thereto; and f. a removable cover Overlying said area for normally enclosing said mandrels and curlers thereon for retaining heated air and any water vapor therein; whereby the curlers may be selectively heated with or without the presence of heated water vapor.
Claim 2
Dependent Claim
142 words
Hair curling apparatus comprising: a. a horizontal base having a peripheral lip surrounding an upwardly directed area for receiving, retaining and evaporating a quantity of water; b. a non-metallic chassis to which said lip is attached; c. water-tight sealing means between said lip and said chassis along the entire length of said lip; d. a number of mandrels secured to said base in heat transfer relation to said base and extending upwardly from said area, each of said mandrels having a construction for transferring heat to a hair curler received thereon; e. means secured to said base for applying heat thereto; and f. a removable cover Overlying said area for normally enclosing said mandrels and curlers thereon for retaining heated air and any water vapor therein; whereby the curlers may be selectively heated with or without the presence of heated water vapor.
Claim 3
Dependent Claim
54 words
Hair curling apparatus according to claim 1 including a floor overlying said area and having apertures of larger size than said mandrels through which said mandrels extend, the perimeter of said floor having a water-tight seal adjacent to said lip for thereby directing hot water vapor to discharge through said apertures onto the curlers.
Claim 4
Dependent Claim
33 words
Hair curling apparatus according to claim 1 including a measuring cup sized to provide said quantity of water, and means secured to said base for storing said cup remotely from said heat-applying means.
Claim 5
Dependent Claim
147 words
Hair curling apparatus comprising: a. a horizontal base having a peripheral lip surrounding an upwardly directed area for receiving, retaining and evaporating a quantity of water; b. a number of mandrels secured to said base in heat transfer relation to said base and extending upwardly from said area, each of said mandrels having a construction for transferring heat to a hair curler received thereon; c. means secured to said base for applying heat thereto; d. a removable cover overlying said area for normally enclosing said mandrels and curlers thereon for retaining heated air and any water vapor therein; e. a chassis supporting said base at its periphery; f. a housing supported by said base at said periphery, and supporting said cover; and g. water-tight sealing means acting between said base, said chassis and said housing and limiting any water vapor escape to the periphery of said cover.
Claim 6
Dependent Claim
147 words
Hair curling apparatus comprising: a. a horizontal base having a peripheral lip surrounding an upwardly directed area for receiving, retaining and evaporating a quantity of water; b. a number of mandrels secured to said base in heat transfer relation to said base and extending upwardly from said area, each of said mandrels having a construction for transferring heat to a hair curler received thereon; c. means secured to said base for applying heat thereto; d. a removable cover overlying said area for normally enclosing said mandrels and curlers thereon for retaining heated air and any water vapor therein; e. a chassis supporting said base at its periphery; f. a housing supported by said base at said periphery, and supporting said cover; and g. water-tight sealing means acting between said base, said chassis and said housing and limiting any water vapor escape to the periphery of said cover.
Claim 7
Dependent Claim
17 words
Hair curling apparatus according to claim 4 in which said housing surrounds said base and said mandrels.
Claim 8
Dependent Claim
19 words
Hair curling apparatus according to claim 4 in which said chassis depends downwardly from the periphery of said base.
Claim 9
Dependent Claim
166 words
Hair curling apparatus comprising: a. a horizontal base having a peripheral lip surrounding an upwardly directed area for receiving, retaining and evaporating a quantity of water; b. a number of mandrels secured to said base in heat transfer relation to said base and extending upwardly from said area, each of said mandrels having a construction for transferring heat to a hair curler received thereon; c. means secured to said base for applying heat thereto; d. a removable cover overlying said area for normally enclosing said mandrels and curlers thereon for retaining heated air and any water vapor therein; e. a chassis supporting said base at its periphery with a water-tight seal therebetween; f. a housing supported by said base adjacent to said periphery with a water-tight seal between said housing and said chassis, and said housing supporting said cover; and g. a bottom cover secured to the lower side of said chassis in spaced relation to said heat applying means, and adapted to support the apparatus.
Claim 10
Dependent Claim
166 words
Hair curling apparatus comprising: a. a horizontal base having a peripheral lip surrounding an upwardly directed area for receiving, retaining and evaporating a quantity of water; b. a number of mandrels secured to said base in heat transfer relation to said base and extending upwardly from said area, each of said mandrels having a construction for transferring heat to a hair curler received thereon; c. means secured to said base for applying heat thereto; d. a removable cover overlying said area for normally enclosing said mandrels and curlers thereon for retaining heated air and any water vapor therein; e. a chassis supporting said base at its periphery with a water-tight seal therebetween; f. a housing supported by said base adjacent to said periphery with a water-tight seal between said housing and said chassis, and said housing supporting said cover; and g. a bottom cover secured to the lower side of said chassis in spaced relation to said heat applying means, and adapted to support the apparatus.
Claim 11
Dependent Claim
30 words
Hair curling apparatus according to claim 7 in which said housing has a skirt secured thereto adjacent to said cover, and surrounding said housing, said chassis and said water-tight seals.
Claim 12
Dependent Claim
17 words
Hair curling apparatus according to claim 8 including a carrying handle pivotally secured to said housing skirt.
Claim 13
Dependent Claim
32 words
Hair curling apparatus according to claim 7 in which said housing has a floor secured thereto adjacent to its water-tight seal and overlying said base area, and through which said mandrels project.
Claim 14
Dependent Claim
17 words
Hair curling apparatus according to claim 7 in which said housing surrounds said base and said mandrels.
Claim 15
Dependent Claim
19 words
Hair curling apparatus according to claim 7 in which said chassis depends downwardly from the periphery of said base.
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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) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |