US3383700A - Portable hair dryer - Google Patents

Portable hair dryer Download PDF

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Publication number
US3383700A
US3383700A US509846A US50984665A US3383700A US 3383700 A US3383700 A US 3383700A US 509846 A US509846 A US 509846A US 50984665 A US50984665 A US 50984665A US 3383700 A US3383700 A US 3383700A
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United States
Prior art keywords
air
hood
motor
heating
hair dryer
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US509846A
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English (en)
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William D Taylor
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Ronson Corp
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Ronson Corp
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Priority to US509846A priority Critical patent/US3383700A/en
Priority to BR179177/66A priority patent/BR6679177D0/pt
Priority to GB52303/66A priority patent/GB1171639A/en
Priority to FR85013A priority patent/FR1501607A/fr
Priority to DE19661557338 priority patent/DE1557338B2/de
Application granted granted Critical
Publication of US3383700A publication Critical patent/US3383700A/en
Assigned to NIHON SIBER HEGNER, K.K. reassignment NIHON SIBER HEGNER, K.K. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: RONSON CORPORATION A CORP OF NJ
Assigned to SECURITY PACIFIC BUSINESS CREDIT INC.,, Lazere Financial Corporation reassignment SECURITY PACIFIC BUSINESS CREDIT INC., SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: RONSON CORPORATION
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    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D20/00—Hair drying devices; Accessories therefor
    • A45D20/22—Helmets with hot air supply or ventilating means, e.g. electrically heated air current
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D20/00—Hair drying devices; Accessories therefor
    • A45D20/04—Hot-air producers
    • A45D20/08—Hot-air producers heated electrically
    • A45D20/10—Hand-held drying devices, e.g. air douches
    • A45D20/12—Details thereof or accessories therefor, e.g. nozzles, stands
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D20/00—Hair drying devices; Accessories therefor
    • A45D20/18—Flexible caps with provision for hot air supply

Definitions

  • ABSTRACT OF THE DISCLOSURE A portable hair dryer having an inflatable hood which is collapsible when not in use and a fan and a heater contained in a housing which is attachable directly to the hood and supported thereby.
  • This invention relates to portable hair dryers and more particularly it relates to a lightweight portable axial-flow hair dryer of the type having a heating unit attached directly to and supported by the head when worn.
  • the portable hair dryers which have gained wide commercial acceptance have a flexible hood, a heating unit, and a flexible hose interconnecting the hood and heating unit.
  • the heating units generally are a combined fan and heating element designed to force hot air through the flexible hose and into the hood.
  • the heating unit In use the heating unit is usually set on some supporting surface or if freedom of movement is desired, it can usually be carried by means of a shoulder strap or the like.
  • These devices are adequate to dry hair but they are heavy to carry and the cumbersome flexible hose is a hindrance to the performance of many activities during a prolonged drying period. As the user of such a device Walks, the suspended heating unit swings and repeatedly strikes the users body. Also the suspension strap has a tendency to slip off the users shoulder during ordinary bending movements.
  • the hood may be of the soft type which is collapsible and able to be folded, with a resulting package that is small enough for a womans purse. In use such a hood conforms closely to the users head, permitting a very ellicient air flow; the elimination of in convenient shoulder straps permits unincumbered freedom of movement.
  • the invention is an improvement in a portable hair dryer of the type having a hood for fitting about the head and covering the hair and an air inlet in the hood into which a stream of warm air is blown to dry the hair.
  • the improvement in combination with this type hair dryer comprises a fan-heater unit having novel construction and performance characteristics.
  • the unit includes a tubular housing member with an axial bore extending through it and defining a fan section at the inlet end of said housing member and a heating sec- 3,383,7fi Patented May 14, 1968 tion at the outlet end of said housing member.
  • Motor means are mounted axially within said fan section and are spaced from the housing member to define an annular airflow channel therebetween.
  • a rotor is mounted for rotation by said motor and has a plurality of circumferentially-spaced impeller blades which have an airfoil profile, extending radially outwardly into the air-flow channel in the fan section.
  • a stator having a plurality of circumferentially-spaced air guide vanes extending radially within the air-flow channel is mounted within the fan section for receiving the air flow from the impeller blades and guiding it into an axial-flow.
  • Heating means are mounted in said heating section and are spaced from the stator in the path of air flow for heating the air before it is blown into the hood. Means are also provided for directly connecting the outlet end of the housing member to the inlet of said hood and supporting the tubular member on the hood.
  • the hair dryer is constructed to be lightweight and compact; for this reason its parts are preferably constructed of lightweight plastic.
  • the preferred type of construction is a vaneaxial fan which produces an axial flow of air and consists of a housing having a cylindrical bore, a rotatable wheel with radially extending blades disposed in the bore, and air guide vanes placed either before or after the wheel.
  • a general description of such a fan may be found in Kents Mechanical Engineers Handbook, Power Volume, 5th ed., New York, John Wiley & Sons, Inc., pp. l-94 or in Heating and Air Conditioning by B. H. Jennings, Scranton, Pa., International Textbook Company, 1956, pp. 434 and 443.
  • the construction of this preferred embodiment gives the added feature of ease of assembly in that the members are dimensioned to be securely held together by a simple pressfit.
  • FIG. 1 is a side elevation showing a portable hair dryer of the invention as worn by a user
  • FIG. 2 is an enlarged side elevation of the heating unit
  • FIG. 3 is an end view of the inlet end of the heating unit
  • FIG. 4 is a section taken along lines 4-4 of FIG. 2;
  • FIG. 5 is a section taken along lines 5-5 of FIG. 2;
  • FIG. 6 is a section taken along lines 6--6 of FIG. 2;
  • FIG. 7 is a side elevation, partly in section and partly broken away of the heating unit rotated about on its axis from the view shown in FIG. 2;
  • FIG. 8 is a schematic wiring diagram.
  • the hair dryer is comprised of a hood 10, which is designed to tie around the users head about the hair to define a drying chamber, and a heating unit 11 which is attached directly to and supported by the hood when worn.
  • the hood is preferably of the conventional flexible collapsible type which has a plurality of air outlet holes 12 and a drawstring closure provided in a seam along the marginal edge defining the opening for the head.
  • an inlet opening 13 into which .is positioned an adaptor ring 14 as best shown in FIG. 2.
  • the adaptor ring 14 is held between inner l5 and outer 16 layers of the hood which are preferably stiffened along this portion of the hood or may have a rigidifying member incorporated into its construction along this portion to give additional support to the adaptor ring.
  • the adaptor ring 14 has an upstanding integral cylindrical collar portion 17 which projects outwardly from the hood. Conventional curved slots 18 and 19 are cut into the collar at diametrically opposite positions so that the heating unit 11 can be attached to the hood with a simple twist connection.
  • the adaptor ring is preferably constructed of a lightweight rigid plastic such as a polyallomer, e.g.
  • Pro-fax 65115 (trade name of Hercules Powder Co., Wilmington, Del.) or its material equivalent.
  • the heating unit 11 is comprised of a housing member consisting of an elongated cylindrical tube 21 which has an axial bore 21 extending completely therethrough. It is preferably formed of a lightweight plastic which has good impact strength, heat resistance, dimensional stability, versatility of fabrication and creep resistance; one type thermoplastic which meets these requirements are the polycarbonates, e.g. Lexan 101 (trade name of General Electric Co., Chemical Materials Dept, Pittsfield, Mass).
  • the tube has a discharge end 22 at which a pair of integral bayonet fasteners 23 and 24 extend radially outward at diametrically opposed portions of the tube.
  • the outside diameter of the tube 26 at the discharge end 22 is such that it will fit tightly into the collar portion 17. It is preferred that the inside diameter of the collar portion taper from a diameter at its outermost end of slightly larger than the outside diameter of the discharge end 22 of the tube to a diameter at its end adjacent the ring of less than the outside diameter of the discharge end; thus upon insertion into the collar portion, the tube will be press-fit together in tight frictional engagement to prevent relative rotational movement and locked against relative axial displacement by the bayonet fasteners 23 and 24 twist-locked into the grooves 18 and 19.
  • a flange portion 26 is defined at the inlet end by the endmo-st portion of the tube flaring outwardly to an increased diameter or bell-shape.
  • the tube 20 tapers from its largest outside and inside diameters at the inlet end to smaller outside and inside diameters at the discharge end 22.
  • the tube 20 also has a stepped inside diameter; the wall thickness increases at about one-third of the axial distance into the tube from the inlet end and defines an annular shoulder 27 at this point and a reduced inside diameter along the remaining two-thirds of the axial length of the tube.
  • a fan section 28 is defined from the inlet end 25 to the shoulder 27 and a heating section 29 is defined along the remainder of the axial length of the tube from the shoulder to the discharge end 22.
  • a permanent magnet miniature DC. motor 30 which is preferred over AC. motors because it permits the mini-mum in Weight and dimensions.
  • the armature of the motor is surrounded by a cylindrical casing 31 which is preferably made of a lightweight thermoplastic, such as the polycarbonate de scribed.
  • a front end motor mount 32 closes the motor about the drive shaft 33 and a rear end motor mount 34 closes the motor at the opposite end from which the motor terminal 35 extends.
  • These front and rear motor mounts can advantageously be made of a polycarbonate, such as Lexan, filled about 20% with glass to increase its deflection temperature under loads. In its position spaced concentrically within the housing, the motor defines an annular air-flow channel between the housing.
  • the stator 36 is comprised of a cylindrical base 37 which has an inside diameter fractionally less than the outside diameter of the casing 31 so that it can be force-fit onto the case and held in a fixed position by the relative dimensions. Extending radially outward from the cylindrical base 37 at circumferentially spaced intervals and extending in the air-flow channel are integral air guide vanes 38, which extend to approximately the same diameter as the inside diameter of the tube in the fan section immediately adjacent the shoulder 27, and upon slight radial expansion caused by forcing the stator 36 onto the motor, the diameter of the stator is expanded sufiiciently to effect a press-fit between at least a portion of the fan section of the tube.
  • the stator vanes 38 have a profile in which the leading edge 40 is chamfered and curves at an angle of about 40 relative to the major axis of the profile in a direction opposite to the direction of rotation of the impeller blades to be described below.
  • the major axis extends parallel to the tube axis because the major length 41 of the vane 38 from the curved leading edge to the trailing edge is straight and of uniform thickness.
  • the rotor has a hub 43, which includes a nose portion 44 which fits on the shaft and is held rotatably attached to the shaft by a set-screw 45 or like means, and a wheel portion 46 which extends rearwardly from the nose portion and overlies and is radially spaced from the motor casing so that it is freely rotatable.
  • the nose portion 44 is inwardly bevelled from the wheel portion 46 to the leading end of the nose and is substantially concentrically positioned within the inlet end of the tube so as to define an annular converging fiow orifice 47 opening into the air-flow channel of the fan section.
  • Extending radially outward from the wheel portion 46 of the hub 43 and in the air-flow channel are a plurality of integral circumferentially-spaced impeller blades 48.
  • the blades extend radially in the air-flow channel to a diameter slightly less than the inside diameter of the housing in the fan section.
  • the blades have a curved airfoil profile and their nominal blade direction is at an angle to its axis of rotation which is an angle of 40 with respect to the axis of the tube 20, with the leading edge forward in the direction of rotation.
  • the rotor blade and the stator vanes are axially spaced from each other so that the air leaving the trailing edge of the rotor blades enters the stator vanes.
  • the heater as sembly 50 basically consists of a frame 51, which is formed from a suitable ceramic material, and a plurality of convolutions .of heater wire 52 wound about and supported on the frame.
  • the frame 5 1 is comprised of four equally spaced radially extending and axially oriented members 53 which have a plurality of axially spaced grooves 54 formed on the outermost radially extended ends of the frame members 53.
  • the convolutions of heater wire are positioned within the grooves 54 and are held in an axially spaced position.
  • the cross-sectional thickness of the frame is preferably kept minimal and its members are arranged parallel to the tube axis so that there is no substantial interference with air flow through the heating section.
  • the heater wire is supported in the path of air flow to provide the optimum heat transfer with the air.
  • the frame 5 1 is constructed to be mounted to the fan assembly by a press-fit.
  • axial extensions 56 and 57 are provided on two diametrically opposite stator blades which define generally U-shaped slots.
  • Axial projectors 58 and 59 are provided on two frame members, which are dimensioned to be press-fit into the slots, thereby mounting the frame in axial alignment with the fan assembly.
  • the fan and heater units are fully assembled as described; then the entire assembly is axially inserted into the inlet end 25 of the tube 20 until the trailing edges of the stator blades 38- abut against the annular shoulder 27.
  • the stator blades are press-fit into the housing and the entire heater and fan assembly is held in the fixed position described.
  • a protective outlet grill cover 60 is then inserted into the outlet end of the housing and is dimensioned to fit tightly therein by a simple press-fit.
  • the ribs defining the grill are spaced to permit free fiow of air but to prevent the users hair or fingers from touching the heating wire.
  • a protective inlet grill cover 62 is mounted at the inlet end 25 of the housing.
  • the inlet cover 62 is attached by means of screws 63 which extend through the flange portion 26 and into circumferentially-spaced support portions 64 of the cover which hold the cover axially spaced from a major portion of the flange portion so as to leave a peripheral space therebetween to aid in air flow into the fan section.
  • a damper ring 65 surrounds the periphery of the flange portion; it is made of an elastomeric material and being positioned at the inlet end of the housing and along which the maximum weight of the unit is concentrated, should the unit rest on the back of the neck of the user during use, the damper ring will provide comfort by presenting a soft contacting surface which will also absorb most vibrations caused by rotation of the motor.
  • FIG. 7 there is an opening 66 through the wall of the housing into the heater section adjacent the outlet end of the tube. This opening, as shown in FIG. 1, permits the wire 67 leading to the AC. source to be inserted into the housing and connected to the heating elements and to the motor.
  • a 110 v. 60 cycle source is used and leads to a switch 68.
  • the switch connects the source to a line leading to the permanent magnet motor 30 to the heating element 52 or both.
  • a bridge type full-wave rectifier 69 is provided at the motor 30 to rectify the alternating current to direct current and a voltage dropping resistor 70 is connected in series with the rectifier to reduce the voltage applied thereto.
  • An alterntaive means of providing reduced voltage is to delete resistor 7i and use instead the voltage drop across the heating coil.
  • Athermostat 71 can be connected in series with the heating element which in this case is a 300 W. resistance coil heater, to control the air temperature of the dryer.
  • a portion of one frame member has been removed to leave a space 72 in which the thermostat can be mounted.
  • the rotor, stator, inlet and outlet covers, and tube housing of a thermoplastic, such as the polycarbonate specified because of the properties described.
  • a thermoplastic such as the polycarbonate specified.
  • the advantages of a lightweight but strong material are very important in the application. In fact the entire weight of the heating unit in the embodiment shown is only 6 /2 ounces. Furthermore the structural arrangement provides the maximum in equipment in the minimum amount of space; in the embodiment described, for example, the overall length of the heating unit is less than 5 inches and the diameter of the housing is less than 2 inches.
  • the arrangement .of rotor vanes and stator blades is designed to give maximum axial airflow.
  • the rotor 42 which rotates clockwise in the embodiment shown, in cooperation with the convergent annular flow orifice accelerates the air-flow into the housing and the stator 38 increases the static pressure as it is difiused and delivered axially.
  • the outlet velocity from the stator is axial. It is interesting to note that the entire fan section occupies only about one-third of the length of the tubing, and the arrangement described is so efiicient that it achieves a static efficiency of 85%.
  • the air flows into the heating section, it flows over the heating elements 52, which extend between the frame members in the direct path of the axial airflow, and the cross section of the frame is minimal so that there is no substantial interference with air-flow as it passes through the heating section.
  • a portable hair dryer of the type having a flexible hood for fitting about the head and covering the hair, the hood being inflatable to have a crown portion and lower portions, and having an inlet for receiving a stream of warm air to dry the hair, and being collapsible when not in use, the improvement in combination therewith comprising:
  • a fan including a rotor having a plurality of circumferentially-spaced impeller blades therein mounted for rotation by said motor, said blades extending radially outward into the air-flow channel in the fan section,
  • a portable hair dryer of the type having a flexible hood for fitting about the head and covering the hair, the hood being inflatable to have a crown portion and lower portions, and having an inlet for receiving a stream of warm air to dry the hair, and being collapsible when not in use, the improvement in combination therewith comprising:
  • a fan including a rotor having a plurality of circumferentially-spaced impeller blades therein mounted for rotation by said motor, said blades extending radially outward into the ar-flow channel in the fan section,
  • a portable hair dryer according to claim 2 wherein said motor is a permanent magnet direct current motor and circuitry is provided for feeding an alternating current to said heating means and rectifying said alternating current to direct current for said motor.
  • a portable hair dryer according to claim 1 wherein said fan includes a stator having a plurality of circumferentially spaced air guide vanes extending radially within the bore of the fan section.
  • stator guide vanes have a curved profile for receiving the air flow from the impeller and guiding into into an axial flow.
  • a portable hair dryer according to claim 5 wherein said stator further comprises a cylindrical base part havmg a bore corresponding to the outside diameter of the motor for attachment thereon, and said air guide vanes extend radially outward from said cylindrical part, their outside diameter corresponding to the bore of said hous mg for attachment therein, whereby said stator (a) is fixedly positioned within said housing and (b) its bore part supports said motor.
  • a portable hair dryer according to claim 5 wherein said impeller blades are inclined at an angle to the rotors axis of rotation with the leading edge of each blade forward in the direction of rotation and said stator vanes have a profile with the leading edge thereof curved relative to the major axis of the profile in a direction opposite to the direction of rotation of the impeller blades and the major length of the profile extended parallel to the tube axis to receive the air from the impeller blades and guide it into an axial flow.
  • a portable hair dryer according to claim 1, wherein said inlet end of said housing includes an outwardly flared flange portion which defines an annular converging orifice, and said rotor has a central, bevelled nose portion adjacent said inlet end.
  • a portable hair dryer of the type having a flexible hood to fit about the head and cover the hair, said hood being inflatable to have a crown portion and lower portions, and having an air inlet for receiving a stream of warm air to dry the hair, and being collapsible when not in use, the improvement in combination therewith comprising:
  • a tubular housing member made of light weight plastic having an axial bore extending therethrough and defining therein a fan section along a first axial length at an inlet end of the housing member and a heating section along a second :major axial length at the outlet end of said housing member, an outwardly flaring flange portion at the inlet end of the housing,
  • a rotor made of lightweight plastic mounted for rotation by said motor said rotor having a bevelled nose portion positioned within the inlet end of said housing and defining an annular converging orifice, a wheel portion extending rearwardly from said nose portion and overlying and radially spaced from said motor, and a plurality of integral circumferentiallyspaced impeller blades which extend radially in the air-flow channel to a diameter slightly less than the inside diameter of the housing member in the fan section, said blades having an airfoil profile and inclined at an angle to its axis of rotation with the leading edge forward in the direction of rotation,
  • stator made of lightweight plastic having a cylindrical base member, which is press-fit on said motor, and a plurality of integral circumferentiallyspaced air guide vanes extending radially within the air-flow channel and in press-fit engagement with said housing member in the fan section to hold said stator in a fixed position and to support said motor therein, said vanes having a profile with the leading edge curved relative to the major axis of the profile in a direction opposite to the direction of rotation of the impeller blades and the major length of the profile extended parallel to the tube axis to receive the air and guide it into an axial flow,
  • an electric heater assembly mounted on said stator and extending axially in said heating section, said assembly having a frame formed of elongated members circumferentially spaced and defining a cross section of narrow radially extending members, and a heater element wound about the elongated edges of the frame and supported in alignment with the airflow channel in the path of the axial air-flow to heat the air,
  • circuitry for feeding an alternating current source to said heater element and rectifying said alternating current to direct current for said motor.

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US509846A 1965-11-26 1965-11-26 Portable hair dryer Expired - Lifetime US3383700A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US509846A US3383700A (en) 1965-11-26 1965-11-26 Portable hair dryer
BR179177/66A BR6679177D0 (pt) 1965-11-26 1966-05-02 Novo secador portatil para cabelos
GB52303/66A GB1171639A (en) 1965-11-26 1966-11-22 Improvements relating to portable hairdryers
FR85013A FR1501607A (fr) 1965-11-26 1966-11-25 Perfectionnements aux sèche-cheveux portatifs
DE19661557338 DE1557338B2 (de) 1965-11-26 1966-11-26 Heissluftaggregat

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US509846A US3383700A (en) 1965-11-26 1965-11-26 Portable hair dryer

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US3383700A true US3383700A (en) 1968-05-14

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US509846A Expired - Lifetime US3383700A (en) 1965-11-26 1965-11-26 Portable hair dryer

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US (1) US3383700A (de)
BR (1) BR6679177D0 (de)
DE (1) DE1557338B2 (de)
FR (1) FR1501607A (de)
GB (1) GB1171639A (de)

Cited By (28)

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DE2216314A1 (de) * 1972-04-05 1973-10-18 Otto Huebner Haartrockenhaube
US3836749A (en) * 1972-03-03 1974-09-17 O Hubner Hair dryer
US3946498A (en) * 1974-07-31 1976-03-30 Schick Incorporated Portable hair dryer
US3949487A (en) * 1972-05-15 1976-04-13 Schick Incorporated Hair dryer
US4039774A (en) * 1975-06-04 1977-08-02 Sperry Rand Corporation Portable hair dryer
EP0008478A1 (de) * 1978-08-26 1980-03-05 Braun Aktiengesellschaft Haartrockner und Verfahren zum Herstellen eines Heizkörpers für diesen Haartrockner
US4195217A (en) * 1977-02-28 1980-03-25 Braun Aktiengesellschaft Hair dryer
US4493975A (en) * 1982-09-30 1985-01-15 Yamada Electric Industries Co., Ltd. Hang-up hair dryer
US4514618A (en) * 1978-08-26 1985-04-30 Braun Ag Compact electric hair dryer
US4515071A (en) * 1982-04-05 1985-05-07 Zach Elmer S Ventilation air control unit
US4724747A (en) * 1985-12-21 1988-02-16 Ebm Elektrobau Mulfingen Gmbh & Co. Ventilator housing with a protective screen
US5810911A (en) * 1996-09-05 1998-09-22 Braun Aktiengesellschaft Filter device for an air-moving hair care appliance
US5829157A (en) * 1997-07-03 1998-11-03 Gittens; Gem Uniform heat distributing heat protecting system for hair drying
US5839204A (en) * 1997-08-13 1998-11-24 Cinque; Brenda A Portable dryer with a retractable handle pitting into an indented housing
US6293030B1 (en) * 2001-01-08 2001-09-25 Mccurtis Martin L. Hair drying apparatus
US6474981B1 (en) * 2000-09-27 2002-11-05 Emerson Electric Co. Co-axial furnace blower with simplified construction
US20060248744A1 (en) * 2005-05-09 2006-11-09 Wahl Clipper Corporation Hair dryer attachment with axial and radial flow
US20070017114A1 (en) * 2005-07-25 2007-01-25 Carol Perrin Wearable hair styling device and method
US20070033825A1 (en) * 2005-04-18 2007-02-15 Beauty-Gear International Limited Hot air blower with ceramic heating element
US20080106867A1 (en) * 2006-05-29 2008-05-08 Sony Corporation Fan motor device and electronic apparatus
US20080229480A1 (en) * 2007-03-21 2008-09-25 Rose Hardwick Heat deflector for use with a hood-type hair dryer
US20090034946A1 (en) * 2006-01-12 2009-02-05 Dyson Technology Limited Drying apparatus
US20120024620A1 (en) * 2010-07-29 2012-02-02 Parlux S.P.A. Silencer device for a hair dryer
US8341853B2 (en) 2005-07-30 2013-01-01 Dyson Technology Limited Drying apparatus
US8347522B2 (en) 2005-07-30 2013-01-08 Dyson Technology Limited Drying apparatus
US8347521B2 (en) 2005-07-30 2013-01-08 Dyson Technology Limited Drying apparatus
US8490291B2 (en) 2005-07-30 2013-07-23 Dyson Technology Limited Dryer
US9854893B2 (en) 2015-12-08 2018-01-02 Hyrsak, Llc Device for improving performance of hair dryer and related method of use

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DE3906265A1 (de) * 1989-02-18 1990-08-23 Stemme Otto Haartrockner

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US2465446A (en) * 1948-01-28 1949-03-29 Alex M Gorfin Direct-current type motor
US2472873A (en) * 1945-02-03 1949-06-14 Myrtle A Woodrum Hair drier
US2478559A (en) * 1947-01-08 1949-08-09 George Wilson Quick heat air blower and drying appliance
US2820305A (en) * 1954-03-15 1958-01-21 Ethel C Brown Hair drying bag
US3023515A (en) * 1959-04-13 1962-03-06 Stern Harriet Jean Portable hair dryer
US3047753A (en) * 1959-03-11 1962-07-31 Borg Warner Electric motor housing
US3168382A (en) * 1961-04-06 1965-02-02 Sunbeam Corp Hair drier improvements
US3261107A (en) * 1965-06-23 1966-07-19 Sunbeam Corp Hair dryer having hose storage means

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US2753434A (en) * 1953-11-17 1956-07-03 Jr Frederick K Storm Portable hand-held suction device

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US2472873A (en) * 1945-02-03 1949-06-14 Myrtle A Woodrum Hair drier
US2478559A (en) * 1947-01-08 1949-08-09 George Wilson Quick heat air blower and drying appliance
US2465446A (en) * 1948-01-28 1949-03-29 Alex M Gorfin Direct-current type motor
US2820305A (en) * 1954-03-15 1958-01-21 Ethel C Brown Hair drying bag
US3047753A (en) * 1959-03-11 1962-07-31 Borg Warner Electric motor housing
US3023515A (en) * 1959-04-13 1962-03-06 Stern Harriet Jean Portable hair dryer
US3168382A (en) * 1961-04-06 1965-02-02 Sunbeam Corp Hair drier improvements
US3261107A (en) * 1965-06-23 1966-07-19 Sunbeam Corp Hair dryer having hose storage means

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3836749A (en) * 1972-03-03 1974-09-17 O Hubner Hair dryer
DE2216314A1 (de) * 1972-04-05 1973-10-18 Otto Huebner Haartrockenhaube
US3949487A (en) * 1972-05-15 1976-04-13 Schick Incorporated Hair dryer
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Also Published As

Publication number Publication date
FR1501607A (fr) 1967-11-10
BR6679177D0 (pt) 1973-09-20
GB1171639A (en) 1969-11-26
DE1557338B2 (de) 1970-12-03
DE1557338A1 (de) 1970-12-03

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