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US3890984A Expired / Lapsed US ⏱️ 0.0 years remaining

Hair dryer with rotary brush

Assignee: Individual
•
Filing: 1974-01-23
•
Granted: 1975-06-24
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Expires: 1994-01-23
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Abstract

Abstract The invention is a rotary brush-hair dryer combination. Air is heated and propelled from the handle of a grooming implement outwardly through a fixed conduit. The air exits from the conduit through a slot which extends from near the end of the conduit furthest from the handle to adjacent the handle. The slot is restricted in size so that the hot air leaves the conduit and is directed throughout a limited angle. Interchangeable tubular brushes are provided which fit over the conduit. The brushes communicate rotatably with a motor within the handle. A number of holes are provided adjacent where the bristles join the brush so that the hot air which flows from the slot in the conduit can flow out primarily through those of the openings opposite the slot. A switch on the handle allows for change of direction of rotation or for shutting off rotation completely. The implement includes an overload switch which will stop rotation of the brush when hair becomes entangled in it. An accessible reset button is also provided for the overload switch.

Inventors

  • 👤 Alexander C Lesetar

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 01:57
CPC Classifications
A; A45; A45D; A45D20/00; A45D20/48; A45D20/50; A46; A46B; A46B13/00; A46B13/02

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 246 words
A combination hair drying and rotary implement, comprising: a hollow handle including therein a heater-fan unit and a motor; a conduit non-rotatably mounted longitudinally adjacent one end of the handle and positioned to accept a flow of hot air from the heater-fan unit and guide the hot air so it does not contact the motor, the conduit having a longitudinal slot commencing adjacent the end of the conduit removed from the handle and terminating short of the handle, the slot serving to direct the hot air directionally Outwardly through a limited angle from the slot; and a brush comprising a tube having bristles extending from the external cylindrical surface thereof, the tube further having a plurality of openings therethrough adjacent the bristles, the tube rotatably communicating at one end thereof with the motor, the tube being substantially concentric with the conduit and being adapted to fit externally around the conduit, said tube detachably communicating with said motor whereby a plurality of brushes are usable with a single handle, means within said handle for automatically stopping the rotation of said brush responsive to high resistance to rotation thereto as when hair becomes entangled in the bristles thereof, and, on said handle, means for selecting the direction of rotation of said brush, means for manually starting rotation of said brush after rotation has been stopped responsive to high resistance thereto, means for manually stopping rotation of said brush, and means for manually stopping and starting said heater-fan unit.
Claim 2
Dependent Claim 246 words
A combination hair drying and rotary implement, comprising: a hollow handle including therein a heater-fan unit and a motor; a conduit non-rotatably mounted longitudinally adjacent one end of the handle and positioned to accept a flow of hot air from the heater-fan unit and guide the hot air so it does not contact the motor, the conduit having a longitudinal slot commencing adjacent the end of the conduit removed from the handle and terminating short of the handle, the slot serving to direct the hot air directionally Outwardly through a limited angle from the slot; and a brush comprising a tube having bristles extending from the external cylindrical surface thereof, the tube further having a plurality of openings therethrough adjacent the bristles, the tube rotatably communicating at one end thereof with the motor, the tube being substantially concentric with the conduit and being adapted to fit externally around the conduit, said tube detachably communicating with said motor whereby a plurality of brushes are usable with a single handle, means within said handle for automatically stopping the rotation of said brush responsive to high resistance to rotation thereto as when hair becomes entangled in the bristles thereof, and, on said handle, means for selecting the direction of rotation of said brush, means for manually starting rotation of said brush after rotation has been stopped responsive to high resistance thereto, means for manually stopping rotation of said brush, and means for manually stopping and starting said heater-fan unit.
Claim 3
Dependent Claim 22 words
An implement as in claim 1, including means mounted on the handle for manually controlling the speed of rotation of the brush.
Claim 4
Dependent Claim 35 words
An implement as in claim 1, including a lip on the handle which fits over the end of the handle adjacent the brush to prevent hair from being caught in the interior of the handle.

References Cited (Backward Citations)

US3491774A Cited
US3613257A Cited
US3524088A Cited
US3702616A Cited
US3730190A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-06-23 1978-12-23 1979-06-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-06-23 1982-12-23 1983-06-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-06-23 1986-12-23 1987-06-24 $7700.00 Window Closed / Lapsed

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