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Motorised hair styling iron

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Motorised hair styling iron


A hair styling iron includes a pair of hinged elongate jaws having complementary hair-engaging surfaces configured to hold and engage hair between the surfaces. The iron is motorised for rotating or vibrating at least one of the jaws. At least one elastomeric rib extends along one of the hair-engaging surfaces, and allows the user to readily modulate the hair-gripping force.
Related Terms: Hair Styling Modulate Styling

Browse recent Kenford Industrial Company Ltd patents - New Territories, Hong Kong, CN
USPTO Applicaton #: #20130025620 - Class: 132227 (USPTO) - 01/31/13 - Class 132 
Toilet > Hair Device >Having Hair Shaping Surface Or Form (e.g., Crimper Or Curler) >Having Winding Form Or Mandrel (e.g., Curler) >With Heater, Fluid Supply, Or Surrounding Fluid Housing

Inventors: Wai Ho Michael Keong, Wai Keung Kent Wan

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The Patent Description & Claims data below is from USPTO Patent Application 20130025620, Motorised hair styling iron.

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TECHNICAL FIELD

The present invention relates to hair styling irons, particularly electric appliances for hair curling or straightening, having one member motor driven to rotate or vibrate.

BACKGROUND OF THE INVENTION

One type of known hand-held electric hair curling or straightening iron use two jaws or arms, at least one of which is heated, with the other cooperating to hold hair in contact with the first, and being moveable from an open position allowing the insertion of hair to a closed position to put the hair in contact with the heater.

Some of the drawbacks with the prior art hair irons are that the processing results can be variable, if the operation is performed too fast, the processing time is too short and, therefore, the hair is not properly formatted, while moving too slowly can damage the hair by overheating. Operation of these irons requires the user to carefully manipulate the two jaws. A new user unfamiliar with the iron may have difficulty in accurately controlling the hair-gripping forces that vary with the clamping pressure between the heating body and hair. As a tool with opposing smooth and hard clamping faces is drawn through the hair any variation in the user\'s hold on the tool produces a variable contact pressure that can cause discomfort, as the hair is pulled unevenly. The resulting treatment of a lock of hair may also produce an uneven appearance.

One way in which this issue has been addressed in old hair irons is by providing one of the jaws with a brush or comb for gripping the hair, however such a brush or comb makes the tool less compact and can restrict the manner in which the tool can be used for different operations, such as curling and straightening.

It will be understood that there is a need to provide a hair styling iron capable of readily being used by new users to achieve hair shaping of good quality, durability, and with uniform appearance throughout the hair, while being easy to use and convenient. The apparatus should capable of ensuring a good thermal transfer between the heated part of the apparatus and hair, while ensuring the protection thereof and with greater reliability in operation. The apparatus should be capable of ensuring a good contact pressure between the means of shaping and hair during treatment. The device should have a simple and compact structure that can be manufactured for a low cost. It is an object of the present invention to address the above needs or more generally to provide an improved electric hair iron.

DISCLOSURE OF THE INVENTION

According to one aspect of the present invention there is provided a hair styling iron, comprising:

a pair of elongate jaws, each jaw having proximal and distal parts;

a hinge connecting the proximal parts of the jaws for movement between a closed position in which the jaws are adjacent for grasping hair therebetween and an open position in which the jaws are spaced apart;

motorised means for rotating or vibrating at least one of the jaws;

heating means for heating at least one of the jaws;

the distal parts of the jaws having complementary hair-engaging surfaces configured to hold and engage hair therebetween, and wherein

at least one elastomeric rib extends along one of the hair-engaging surfaces.

The proximal parts may be at longitudinal ends of the jaws or, for instance, at positions intermediate the longitudinal ends.

Preferably the pair of jaws comprise first and second jaws, the first jaw includes a barrel having a first longitudinal axis and a substantially cylindrical hair-engaging surface,

the motorised means comprises a rotary motor which rotates the barrel about the first longitudinal axis and wherein

the one of the hair-engaging surfaces comprises a concave hair-engaging surface formed on the second jaw.

The at least one elastomeric rib may be disposed to substantially bisect the concave hair-engaging surface. Alternatively, the at least one elastomeric rib may comprise two elastomeric strips disposed adjacent opposing longitudinal edges of the concave hair-engaging surface.

Preferably the at least one elastomeric rib is linear and extends generally parallel to a longitudinal axis of the jaw on which it is disposed. Optionally the at least one elastomeric rib may be curvilinear.

Preferably the at least one elastomeric rib is linear and extends substantially parallel to a surface of the barrel in the closed position.

Preferably the hair-engaging surfaces are metal surfaces, the at least one elastomeric rib has a substantially constant cross-section throughout its length, and protrudes from the one of the hair-engaging surfaces by a substantially constant dimension throughout its length.

Preferably the at least one elastomeric rib has a convex outer surface protruding from the one of the hair-engaging surfaces. Optionally, the outer surface of the rib may protrude from the one of the hair-engaging surfaces only when the heating portion is at an elevated temperature, due to thermal expansion, and may otherwise be flush or recessed below the one of the hair-engaging surfaces.

Preferably the convex outer surface of the at least one elastomeric rib has a substantially constant radius of curvature.

The at least one elastomeric rib may be bonded to the one of the hair-engaging surfaces. Alternatively, the at least one elastomeric rib may be formed on a strip received in an elongate slot in the one of the hair-engaging surfaces.

Preferably the heating portion has a longitudinally extending plane of symmetry and each elastomeric rib is located substantially symmetrically relative to the plane of symmetry. For instance, where one elastomeric rib is provided it is bisected by the plane, and where two ribs are provided, they may be disposed either side of the plane.

Preferably the width of the at least one elastomeric rib is between 2% and 20% of the width of the one of the hair-engaging surfaces. Preferably the at least one elastomeric rib has a hardness between 30 Shore A and 50 Shore D. Preferably the at least one elastomeric rib is formed from a silicon rubber.



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stats Patent Info
Application #
US 20130025620 A1
Publish Date
01/31/2013
Document #
13640115
File Date
04/07/2011
USPTO Class
132227
Other USPTO Classes
International Class
45D1/02
Drawings
2


Hair Styling
Modulate
Styling


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