CA2054071C - Electrically powered hand held hair curling appliance - Google Patents
Electrically powered hand held hair curling appliance Download PDFInfo
- Publication number
- CA2054071C CA2054071C CA 2054071 CA2054071A CA2054071C CA 2054071 C CA2054071 C CA 2054071C CA 2054071 CA2054071 CA 2054071 CA 2054071 A CA2054071 A CA 2054071A CA 2054071 C CA2054071 C CA 2054071C
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- Canada
- Prior art keywords
- barrel
- hair
- elements
- apertures
- diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- 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
- A45D20/48—Hair-drying combs or hair-drying brushes, with internal heating means
- A45D20/50—Hair-drying combs or hair-drying brushes, with internal heating means and provision for an air stream
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- Hair Curling (AREA)
- Cleaning And Drying Hair (AREA)
- Brushes (AREA)
Abstract
The invention relates to electrically powered hand held hair curling appliances of the type comprising a barrel (2) for delivering warm air to the hair, the barrel (2) being of adjustable diameter to allow curls of different diameter to be formed. The barrel (2) consists of a number of barrel elements (3) which can be moved radially outwardly or radially inwardly to expand or contract the barrel, the elements (3) overlapping one another when contracted but always allowing unobstructed air flow from the interior of the barrel (2) out through apertures (3d) to the hair.
Description
ELECTRICALY,Y PaWER~I~ HAND I~IE~,D
~~ATZNG APpt.~r~CN
The present invention relates to electrically powered hand held hair curling appliances of the type comprising a handle by means of whir~h the appliance is held; a barrel, extending from the handle on which the hair to be curled is wound externally, the barrel being hollow to allow fluid flow along the barrel, the barrel being provided with apertures to allow the fluid to flow outwardly to thn hair, and the barrel bsing of adjustable diameter between a Pully expanded arid a fully contracted state to allow earls of different diameter to be formed.
DF-~r-25 28 822 in the name Hubner and DE-A-25 29 016 1s in the same name (the latter being an application !or a patent of addition to the former) both describe hair aurlir~g appliances o! the type described. Hubner describes a hair curling appliance which uses steam as a fluid. Ths barrel consists o= a hollow perforated cylinder which is of fixed diameter, on the outside of which are pivotally mounted a number of perforated ge~mi-circular segmsrits. The segments may be pivotally moved togsthsr outwardly to increase the diamstsr of the barrel or inwardly to decrease the diameter of the 28 barrel.
,_ '3's! ZEbO 0Z8 W002J 7Skid E~iH SNOOd3a SS:bZ ~6~ 1J0 2~
20540?1 The Hubner hair ourler suffers from a. number of disadvantages. Firstly, the Hubner barrel has a large diameter even when fully contracted. This large diameter arises from the construction; in particular 30 because the barrel comprises segments fixed externally to a cylinder. Ths minimum diameter is stated to be 20 mm which is at the upper and of the range of desirable curl diameters, Secondly, the Hubner appliance is intended to apply a low volume low 35 pressure supply o! steam to the hair.' Tt would be unsuitable for use in applying a substantial flow of dry warm air to the hair for the purpose of drying and styling, in partioular because in the Hubner appliance the fluid must flow along a circuitous path from the 40 interior o! the cylinder out through one sat of apertures into the area between the cylinder and the segments, and then out through another set of apertures to the hair. The two sets of apertures era generally not aligned with one another. Finally the 45 applianas proposed by Hubner would suffer lrom condensation problems with drops of water falling from the appliance onto the hair.
O8~11~3,921,648 to Baxradas also describes a hair curling appliance of the type described. ~hs 50 appliance is a steam curling iron. The barrel consists of a central hollow perforated cylinder of lixed diameter on the outside of which is mount~ad a ..
G'~l ISbO 0't8 X.14021 Xkl~ E~iH SNO~ki3Q 9S:bZ Z6. 1~0 ~~
20540?1 perforated expansible mandra~. o! resilient :tainlesa steal.
55 The Barradas hair curling appliance suffers from the game disadvantages as the Hubner appliance, namely a !ergs diameter when fully contracted arising from the two-layer structure, unsuitability for high volume flow of warm dry air arming from a circuitous path 60 through two sets of aparturad which era not in register, and condensation leading to drops of water !ailing on the hair.
An object of the praaant invention is to provide an improved curling appliance of the typo described which 65 in the fully contracted state has a aubatantially smaller diameter than the prior art davioes. Another object o! the present invention is to provide an improved hair curling appliance of the typo described which can deliver a substantial flow of warm dry emir '70 to the hair.
The invention provides a hair car~in7 =ppiisnaa o: tls.
type described in which the barrel aompriaoa a numb~r a! elongate barrel elamsnta arranged in mutually parallel radial relationship to form a generally 75 axially symmetric barrel, tho barrel elements being movable radially inwardly together and radially outwardly together so as to contrast and expand the r~l'r1 Zr~bGl G1ZF1 GlfiC)?I 3CH~1 F'iiH .r-.~hlCl,'IH~Cf J.~:bt ZF,. 1'7C!
diameter o! the banal, the barrel elements mutually aombininq to form a substantially aloud barrel when 80 in the fully expanded stets and a substantially blosed barrel with overlapping barrel, ala~mant~s in the aontraatad state, and the barrel elements being provided with apertures which allow fluid to flow prom the interior o! th~r barrel directly out to the haft 85 wharf the barrel is in the fully expanded, tully aontractad or any intarntediate stets.
The hair curling applianaa according to the invention has a number o! advantages, Firstly, the ~struature allows a barrel o! small diameter to be aonstruatsd.
90 Baaondly, air flow idraatly form the interior of the barrel to the hair, sllowl.ng a largo volume ox air to be applied to the hair.
Figure : is a sido elevation o! a warm air 95 brush inaludinQ a barrel of adjustable diameter in aaaordanaa with the invention shown in the axpandsd atatet Figurl~ 2 is a view similar to Figure 1, but showing the barrel in cross ~saation:
100 Figure 3 is an sxploded perspective view o! the barrel on a larger seals, showing the principal componants~
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Figure 4 shows on a larger asaal,e one of the components shown in Figure 3, na~naly a 105 barrel, element;
Figure 4a & 4b show two adjacent barrel elament~ with the barrel in the tally expanded and the tally contracted state respectivalyf 110 Figures 5a & 5b are sectional views oil A~-A of Figure 2 and show the barrel in ths~ expanded and contracted steita thereof respectively:
Figure 6 & 7 era views similar to Flgura 2, but on 115 a larger wale, showing the adjustment mech4nism !or the barrel, Figu~:e showing the outer end of the barrel and Figure 7 showing the inner end;
Fi9ure,$ is a view similar to Figure 3, but l20 showing a modified construction og warm air brusht and higure 9 is a sectional side elevation of the barrel and ad~ustmsnt me~ahanism o! the modified construction.
1z3 Ret'erring now to e'igures 1 to 7 of the drawings, they warm air brush comprises a gripping handle 1, a barrel, -- 5 ..
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20540'1 2 which is used to brush the hair, and a heatwr blowwr (not shown) located in the gripping handle 1 for 130 heating air which is than directed along the barrel 2 and emerges through apertures described below to warm the hair being brushed.
The barrel 2 oonsists or six eloriQate barrel aliments 3 arranged in mutually parallel radial relationship to 13s form a generally cylindrical barrel, aaah barrel element 3 consists of a base 3a, a row~ol projecting brush tenth 3b, a lateral projection 3c at one side o!
the base !or underlying the base 3a of the ad~aaent element, a row o! apertures 3d in the base 3a and a 140 row of indentations 3e in the lateral pro3eation 3a.
Each barrel element 3 is integrally loaned of plastic mat~riai but includes a metal sti!lening rod 3t.
D'igure 6b shows the barrel 2 in the fully aont~aoted state with the bases 3a e~butting one another. Figure 145 da shows the barrel Z in the fully expanded mate with gaps bet~Ieen the bases 3a, these gaps being closed by the lateral projeotions 3a. Closure of the gaps ehsures that the barrel Z is substantially closed so that warm air flowing down the barrel escapes only 150 through the apertures 3d. The external diameter of the barrel 2 is 14 mm in the fully aontraated s~tttte and ZZ min in the fully expanded state.
Zt'd ZEbO ~'t9 W00~ ~d~ E~iH SNO~b3a 6S:bZ ~6~ 1~0 E~
2054 0'~1 As best seen in Figures 4a and Ab, the apertures 3d are always unobs~tructe~d, allowing a substantial volume 135 of warm dry air to be delivered directly from the Interior of the barrel 2 to the hair, withaut any xisk of backpresgure or overheating of the heater blower.
t~Ihen the barrel 2 is in the fully expanded state ae~
shown in Figure 4a, air emerges thraugh the apartures~
160 3d and also through the indentations 3e. When the barrel 2 is in the fully contracted state as shown in Figure 4b, the indentations 3e move into~register with the apertures 3d, so that the apertures remain unobstracted.
165 The user expands or contracts the barrel 2 by means of the adjustment knob 4 located at the tip o! thQ
barrel. she user grips the knob 4, deprassir~g the knob axially along the barrel 2 towards the handle 1 against spring biassing so as to disengage the knob 4 170 from a lacking mechanism, the user then rotates the knob 4 claCkwise to expand the barrel Z or anti-clockwise to aontreat the barrel 2, and then releases the knob 4 so that the latter moves axially bask along the barrel 2 under the in=luenae of the 175 spring biassing and re-engages the locking mechanism to prevent further rotation.
The locking mechanism will now be described. A fixed central shaft 3 extends from the handle 1. A washer 6 ~Z ' d ~EbO Qt8 WGGa Xd~ E~iH Sf,IGGd3a 6S : bt Z6. 1GG Ea and cap 7 are provided at the outer end of the fixed 180 central shaft 5. A flanged cellar 8 is fixedly mounted at the and of the shaft 5 just inwardJ.y of the cap 7 and wash~r 6, and has gear-teeth 8a on the outer circumferantial surface of the flange. The adjustment knob 4 has teeth 4a on the inner circumferential 185 surface which in the normal position thereof as shown in Figure 6 engage with the tenth 8a an the flanged collar 8, then~by preventing rotation of the adjustment knob 4. Th~ adjustment knob. 4 is held in the normal pasition by a coil~d compression spring 9 190 which biasses the adjustment knob 4 towards the outer arid of thaE~ shaft 5 into abutm~nt with th~ wash~r 6.
The adjustment msahanism will now be describ~d. HThen the adjus8tmant knob 4 is depressed against the action of the coiled compression spring 9, the inwardly 195 projecting is~th 4a of th~ adjustment knob 4 move out of meshing engagement with the externally pro~eating teeth 8a on the flanged collar 8, allowing the adjustment knob 4 to be rotated. Ths subsequent rotation o! the adjustment knob 4 onuses corr~sponding 200 rotation of nut lo, the adjuotmant knob 4 and nut a.0 being held together by meshing gears 4a, 10a. The nut is threaded on external screw threading lla on the shank of lront cam 11 which is slidably mount~d an the central shaft 5. Doubl~ helix threading is used for 205 extra stability. The nut 10 is held in a fixed axial _ g _ ~~GO 0't9 ulrUr~ ~d~ 6~IH ShlUUki34 00:Si Z5. 1U0 ~?
a position between the front cam housing 18 and the flung~d collar 8. As a result, rotation of the adjustable knob 4 and consequent rotation of the nut 19 causes lengthwise axial movement of the franc cam 210 11. The axial movement of the front eam 11 ie transmitted by aonnscting tads 13 to the rear cam 12 , which is also alidably mounta8 on the central shaft 5. As the front and rear cams 11, 12 move axially, axial movement of the barrel elements 3 is prevented 215 by stopping member 1~ which is fixed on the central shaft 5 by means mf locking pin 19 (bast seen in Figure 6), and the barrel elements 3 era caused to ride up or dawn chi cams 11, 12, so that the barrel 2 expands or aantraats radially. The cams 11, 12 axe 220 looatsd in the front cam housing 18 and r~ar cam housing 17 raepeatively. Front cam housing 18 is fixed on the stopping member 16 and rear cam housing 17 is fixed to the asntrai shaft 5 and allows air to flaw therethraugh to the interior o! the barrel 2.
225 By way of further explanation the co-operation of the barrel elements 3, came 11, 12 and connecting rods 13 will now ba described. The outer and of each barrel element 3 is provided with a pair of angled aide slots which define an angled neck 20 for engaging in the 230 inclined radial slats 21 in the front cam 11. The inner end of the barrel element 3 has an inclined portion 3g so that in oombination the six barrel g -bt'~ ZEbO 0Z8 W44~ Xh~ ~~H SN04d3a ~O:S~ Z6. 174 ~~
205~07~
alamante have a flared inner and, the largest diameter of which substantially matches the diameter of the 235 handle 1 to allow a large flow of air to ba introduced into the barrel. Ona large trianqulax aperture 3h is provided in each inclined portion which e~arves the dual purpose of delivering air to the outside ~surfaae of the curled hair arid wanting any air prasaure build 240 up to prevent overheating of the heater.blowar. In addition each inclined portion 3g finishes with an inclined neck 22 which engages in an inclined xadial slot 23 in the rear cam 12. The connecting rods 13 are disposed, ass best scan in Figure '7, alongside the 245 central shalt 5 and are provided at each end with an outwardly turned right angle bend 13a which engage in holes 24, 25 in the front and rear cams i1, 12 respectively, Figures s and 9 show a modification in which the diameter 250 of the barrel 102 is adjustable by means of a thumb~operated knob 104 at the inner end of the barrel.
This arrangement allows the appliance to be held in one hand and the barrel diameter to ba adjusted by the thumb of that hand. There is no locking mechanism to prevent Z5~ rotstian of the knob 104. The components comprise a shaft mounting bracket 130 fixed to the handle (not shown), a fixed central shaft 105, a front cam 111 fixed to the shaft 105, a rear cam 11Z fixed to the shaft 105, a front cam housing 118, a washer 106, a cap 107 and bolt 131, barrel S~'~J Z8b0 0~8 W0021 XkJ3 E~1H SNOO~J34 ~O:SZ Z6. 100 3~
260 element 103, a barrel element stiffening rod 103f, and a heat shield 131. which fits inside the knob 104. An a~ssential component of then maahanissm is pullet element 132. This component is prevented E'rom rotating by the engagement of fe~t 132a in apert~xxes 1.12a in the rear cam 265 112, but is free to move axially along the s~hagt 103. The pullet element 132 is provided with thre~ equally spaced external lugrt~ 132b which ao-operate with helical grooves 104a on the inside face of the ratatable knob 104.
When knob 104 is rotated, the co-operation of lugs 132b and 270 grooves 104a causes the pullet element 132 to move axially along the shaft 105. This axial movement is in turn transmitted to the barrel elements 103 by virtue of the engagement of the neck 103a o!' each barrel ~dlement 103 in a corresponding slot 132a in the pullex el~tent 132. As the 273 barrel elements 103 wave axially they ride up or down the tram and rear acme 111, 1.12 causing the barrel 102 to expand or aoatraat.
The invention is not limited to warm air brushes. The invention may be applied to a variety of~ditlerent hair 280 care appliances, Eor example hair curling irons.
~7667C64-74) 9~'d ZEbO 0~8 b100d 7~dd F~iH Sh14~b3Q aO:SI S6. 175 ~?
~~ATZNG APpt.~r~CN
The present invention relates to electrically powered hand held hair curling appliances of the type comprising a handle by means of whir~h the appliance is held; a barrel, extending from the handle on which the hair to be curled is wound externally, the barrel being hollow to allow fluid flow along the barrel, the barrel being provided with apertures to allow the fluid to flow outwardly to thn hair, and the barrel bsing of adjustable diameter between a Pully expanded arid a fully contracted state to allow earls of different diameter to be formed.
DF-~r-25 28 822 in the name Hubner and DE-A-25 29 016 1s in the same name (the latter being an application !or a patent of addition to the former) both describe hair aurlir~g appliances o! the type described. Hubner describes a hair curling appliance which uses steam as a fluid. Ths barrel consists o= a hollow perforated cylinder which is of fixed diameter, on the outside of which are pivotally mounted a number of perforated ge~mi-circular segmsrits. The segments may be pivotally moved togsthsr outwardly to increase the diamstsr of the barrel or inwardly to decrease the diameter of the 28 barrel.
,_ '3's! ZEbO 0Z8 W002J 7Skid E~iH SNOOd3a SS:bZ ~6~ 1J0 2~
20540?1 The Hubner hair ourler suffers from a. number of disadvantages. Firstly, the Hubner barrel has a large diameter even when fully contracted. This large diameter arises from the construction; in particular 30 because the barrel comprises segments fixed externally to a cylinder. Ths minimum diameter is stated to be 20 mm which is at the upper and of the range of desirable curl diameters, Secondly, the Hubner appliance is intended to apply a low volume low 35 pressure supply o! steam to the hair.' Tt would be unsuitable for use in applying a substantial flow of dry warm air to the hair for the purpose of drying and styling, in partioular because in the Hubner appliance the fluid must flow along a circuitous path from the 40 interior o! the cylinder out through one sat of apertures into the area between the cylinder and the segments, and then out through another set of apertures to the hair. The two sets of apertures era generally not aligned with one another. Finally the 45 applianas proposed by Hubner would suffer lrom condensation problems with drops of water falling from the appliance onto the hair.
O8~11~3,921,648 to Baxradas also describes a hair curling appliance of the type described. ~hs 50 appliance is a steam curling iron. The barrel consists of a central hollow perforated cylinder of lixed diameter on the outside of which is mount~ad a ..
G'~l ISbO 0't8 X.14021 Xkl~ E~iH SNO~ki3Q 9S:bZ Z6. 1~0 ~~
20540?1 perforated expansible mandra~. o! resilient :tainlesa steal.
55 The Barradas hair curling appliance suffers from the game disadvantages as the Hubner appliance, namely a !ergs diameter when fully contracted arising from the two-layer structure, unsuitability for high volume flow of warm dry air arming from a circuitous path 60 through two sets of aparturad which era not in register, and condensation leading to drops of water !ailing on the hair.
An object of the praaant invention is to provide an improved curling appliance of the typo described which 65 in the fully contracted state has a aubatantially smaller diameter than the prior art davioes. Another object o! the present invention is to provide an improved hair curling appliance of the typo described which can deliver a substantial flow of warm dry emir '70 to the hair.
The invention provides a hair car~in7 =ppiisnaa o: tls.
type described in which the barrel aompriaoa a numb~r a! elongate barrel elamsnta arranged in mutually parallel radial relationship to form a generally 75 axially symmetric barrel, tho barrel elements being movable radially inwardly together and radially outwardly together so as to contrast and expand the r~l'r1 Zr~bGl G1ZF1 GlfiC)?I 3CH~1 F'iiH .r-.~hlCl,'IH~Cf J.~:bt ZF,. 1'7C!
diameter o! the banal, the barrel elements mutually aombininq to form a substantially aloud barrel when 80 in the fully expanded stets and a substantially blosed barrel with overlapping barrel, ala~mant~s in the aontraatad state, and the barrel elements being provided with apertures which allow fluid to flow prom the interior o! th~r barrel directly out to the haft 85 wharf the barrel is in the fully expanded, tully aontractad or any intarntediate stets.
The hair curling applianaa according to the invention has a number o! advantages, Firstly, the ~struature allows a barrel o! small diameter to be aonstruatsd.
90 Baaondly, air flow idraatly form the interior of the barrel to the hair, sllowl.ng a largo volume ox air to be applied to the hair.
Figure : is a sido elevation o! a warm air 95 brush inaludinQ a barrel of adjustable diameter in aaaordanaa with the invention shown in the axpandsd atatet Figurl~ 2 is a view similar to Figure 1, but showing the barrel in cross ~saation:
100 Figure 3 is an sxploded perspective view o! the barrel on a larger seals, showing the principal componants~
5's! Wb0 0'L8 bl0421 Xtld 6~iH ~~N4~ti34 dS:bS Z6. 1~0 c~~
Figure 4 shows on a larger asaal,e one of the components shown in Figure 3, na~naly a 105 barrel, element;
Figure 4a & 4b show two adjacent barrel elament~ with the barrel in the tally expanded and the tally contracted state respectivalyf 110 Figures 5a & 5b are sectional views oil A~-A of Figure 2 and show the barrel in ths~ expanded and contracted steita thereof respectively:
Figure 6 & 7 era views similar to Flgura 2, but on 115 a larger wale, showing the adjustment mech4nism !or the barrel, Figu~:e showing the outer end of the barrel and Figure 7 showing the inner end;
Fi9ure,$ is a view similar to Figure 3, but l20 showing a modified construction og warm air brusht and higure 9 is a sectional side elevation of the barrel and ad~ustmsnt me~ahanism o! the modified construction.
1z3 Ret'erring now to e'igures 1 to 7 of the drawings, they warm air brush comprises a gripping handle 1, a barrel, -- 5 ..
W'sl 'LFbO 0'~8 W0421 Xkl~ B71H Sf~.10~b3a BS:bI Z6~ 1~4 ~~
20540'1 2 which is used to brush the hair, and a heatwr blowwr (not shown) located in the gripping handle 1 for 130 heating air which is than directed along the barrel 2 and emerges through apertures described below to warm the hair being brushed.
The barrel 2 oonsists or six eloriQate barrel aliments 3 arranged in mutually parallel radial relationship to 13s form a generally cylindrical barrel, aaah barrel element 3 consists of a base 3a, a row~ol projecting brush tenth 3b, a lateral projection 3c at one side o!
the base !or underlying the base 3a of the ad~aaent element, a row o! apertures 3d in the base 3a and a 140 row of indentations 3e in the lateral pro3eation 3a.
Each barrel element 3 is integrally loaned of plastic mat~riai but includes a metal sti!lening rod 3t.
D'igure 6b shows the barrel 2 in the fully aont~aoted state with the bases 3a e~butting one another. Figure 145 da shows the barrel Z in the fully expanded mate with gaps bet~Ieen the bases 3a, these gaps being closed by the lateral projeotions 3a. Closure of the gaps ehsures that the barrel Z is substantially closed so that warm air flowing down the barrel escapes only 150 through the apertures 3d. The external diameter of the barrel 2 is 14 mm in the fully aontraated s~tttte and ZZ min in the fully expanded state.
Zt'd ZEbO ~'t9 W00~ ~d~ E~iH SNO~b3a 6S:bZ ~6~ 1~0 E~
2054 0'~1 As best seen in Figures 4a and Ab, the apertures 3d are always unobs~tructe~d, allowing a substantial volume 135 of warm dry air to be delivered directly from the Interior of the barrel 2 to the hair, withaut any xisk of backpresgure or overheating of the heater blower.
t~Ihen the barrel 2 is in the fully expanded state ae~
shown in Figure 4a, air emerges thraugh the apartures~
160 3d and also through the indentations 3e. When the barrel 2 is in the fully contracted state as shown in Figure 4b, the indentations 3e move into~register with the apertures 3d, so that the apertures remain unobstracted.
165 The user expands or contracts the barrel 2 by means of the adjustment knob 4 located at the tip o! thQ
barrel. she user grips the knob 4, deprassir~g the knob axially along the barrel 2 towards the handle 1 against spring biassing so as to disengage the knob 4 170 from a lacking mechanism, the user then rotates the knob 4 claCkwise to expand the barrel Z or anti-clockwise to aontreat the barrel 2, and then releases the knob 4 so that the latter moves axially bask along the barrel 2 under the in=luenae of the 175 spring biassing and re-engages the locking mechanism to prevent further rotation.
The locking mechanism will now be described. A fixed central shaft 3 extends from the handle 1. A washer 6 ~Z ' d ~EbO Qt8 WGGa Xd~ E~iH Sf,IGGd3a 6S : bt Z6. 1GG Ea and cap 7 are provided at the outer end of the fixed 180 central shaft 5. A flanged cellar 8 is fixedly mounted at the and of the shaft 5 just inwardJ.y of the cap 7 and wash~r 6, and has gear-teeth 8a on the outer circumferantial surface of the flange. The adjustment knob 4 has teeth 4a on the inner circumferential 185 surface which in the normal position thereof as shown in Figure 6 engage with the tenth 8a an the flanged collar 8, then~by preventing rotation of the adjustment knob 4. Th~ adjustment knob. 4 is held in the normal pasition by a coil~d compression spring 9 190 which biasses the adjustment knob 4 towards the outer arid of thaE~ shaft 5 into abutm~nt with th~ wash~r 6.
The adjustment msahanism will now be describ~d. HThen the adjus8tmant knob 4 is depressed against the action of the coiled compression spring 9, the inwardly 195 projecting is~th 4a of th~ adjustment knob 4 move out of meshing engagement with the externally pro~eating teeth 8a on the flanged collar 8, allowing the adjustment knob 4 to be rotated. Ths subsequent rotation o! the adjustment knob 4 onuses corr~sponding 200 rotation of nut lo, the adjuotmant knob 4 and nut a.0 being held together by meshing gears 4a, 10a. The nut is threaded on external screw threading lla on the shank of lront cam 11 which is slidably mount~d an the central shaft 5. Doubl~ helix threading is used for 205 extra stability. The nut 10 is held in a fixed axial _ g _ ~~GO 0't9 ulrUr~ ~d~ 6~IH ShlUUki34 00:Si Z5. 1U0 ~?
a position between the front cam housing 18 and the flung~d collar 8. As a result, rotation of the adjustable knob 4 and consequent rotation of the nut 19 causes lengthwise axial movement of the franc cam 210 11. The axial movement of the front eam 11 ie transmitted by aonnscting tads 13 to the rear cam 12 , which is also alidably mounta8 on the central shaft 5. As the front and rear cams 11, 12 move axially, axial movement of the barrel elements 3 is prevented 215 by stopping member 1~ which is fixed on the central shaft 5 by means mf locking pin 19 (bast seen in Figure 6), and the barrel elements 3 era caused to ride up or dawn chi cams 11, 12, so that the barrel 2 expands or aantraats radially. The cams 11, 12 axe 220 looatsd in the front cam housing 18 and r~ar cam housing 17 raepeatively. Front cam housing 18 is fixed on the stopping member 16 and rear cam housing 17 is fixed to the asntrai shaft 5 and allows air to flaw therethraugh to the interior o! the barrel 2.
225 By way of further explanation the co-operation of the barrel elements 3, came 11, 12 and connecting rods 13 will now ba described. The outer and of each barrel element 3 is provided with a pair of angled aide slots which define an angled neck 20 for engaging in the 230 inclined radial slats 21 in the front cam 11. The inner end of the barrel element 3 has an inclined portion 3g so that in oombination the six barrel g -bt'~ ZEbO 0Z8 W44~ Xh~ ~~H SN04d3a ~O:S~ Z6. 174 ~~
205~07~
alamante have a flared inner and, the largest diameter of which substantially matches the diameter of the 235 handle 1 to allow a large flow of air to ba introduced into the barrel. Ona large trianqulax aperture 3h is provided in each inclined portion which e~arves the dual purpose of delivering air to the outside ~surfaae of the curled hair arid wanting any air prasaure build 240 up to prevent overheating of the heater.blowar. In addition each inclined portion 3g finishes with an inclined neck 22 which engages in an inclined xadial slot 23 in the rear cam 12. The connecting rods 13 are disposed, ass best scan in Figure '7, alongside the 245 central shalt 5 and are provided at each end with an outwardly turned right angle bend 13a which engage in holes 24, 25 in the front and rear cams i1, 12 respectively, Figures s and 9 show a modification in which the diameter 250 of the barrel 102 is adjustable by means of a thumb~operated knob 104 at the inner end of the barrel.
This arrangement allows the appliance to be held in one hand and the barrel diameter to ba adjusted by the thumb of that hand. There is no locking mechanism to prevent Z5~ rotstian of the knob 104. The components comprise a shaft mounting bracket 130 fixed to the handle (not shown), a fixed central shaft 105, a front cam 111 fixed to the shaft 105, a rear cam 11Z fixed to the shaft 105, a front cam housing 118, a washer 106, a cap 107 and bolt 131, barrel S~'~J Z8b0 0~8 W0021 XkJ3 E~1H SNOO~J34 ~O:SZ Z6. 100 3~
260 element 103, a barrel element stiffening rod 103f, and a heat shield 131. which fits inside the knob 104. An a~ssential component of then maahanissm is pullet element 132. This component is prevented E'rom rotating by the engagement of fe~t 132a in apert~xxes 1.12a in the rear cam 265 112, but is free to move axially along the s~hagt 103. The pullet element 132 is provided with thre~ equally spaced external lugrt~ 132b which ao-operate with helical grooves 104a on the inside face of the ratatable knob 104.
When knob 104 is rotated, the co-operation of lugs 132b and 270 grooves 104a causes the pullet element 132 to move axially along the shaft 105. This axial movement is in turn transmitted to the barrel elements 103 by virtue of the engagement of the neck 103a o!' each barrel ~dlement 103 in a corresponding slot 132a in the pullex el~tent 132. As the 273 barrel elements 103 wave axially they ride up or down the tram and rear acme 111, 1.12 causing the barrel 102 to expand or aoatraat.
The invention is not limited to warm air brushes. The invention may be applied to a variety of~ditlerent hair 280 care appliances, Eor example hair curling irons.
~7667C64-74) 9~'d ZEbO 0~8 b100d 7~dd F~iH Sh14~b3Q aO:SI S6. 175 ~?
Claims (2)
1. An electrically powered hand held hair care appliance of the type comprising a handle (1) by means of which the appliance is held; a barrel (2) extending from the handle on which the hair to be curled is wound externally, the barrel (2) being hollow to allow fluid flow along the barrel, the barrel being provided with apertures (3d) to allow they fluid to flow outwardly to the hair, and the barrel being of adjustable diameter between a fully expanded and a fully contracted state to allow curls of different diameter to be formed characterized in that the barrel (2) comprises a number of elongate barrel elements (3) arranged in mutually parallel radial relationship to form a generally axially symmetric barrel, the barrel elements (3) being movable radially inwardly together and radially outwardly together so as to contract and expand the diameter of the barrel (2), they barrel elements (3) mutually combining to form a substantially closed barrel (2) when in the fully expanded state and a substantially closed barrel (2) with overlapping barrel elements (3a, 3c) in the contracted state, and the barrel elements (3) being provided with apertures (3d) which allow fluid to flow from the interior of the barrel (2) directly out to the hair when the barrel (2) is in the fully expanded, fully contracted or any intermediate state.
2. A hair curling appliance according to claim 2 in which each barrel element (3) comprises an elongate base (3a), a row of brush teeth (3b) projecting radially outwardly from the base, a row of apertures (3d) in the base, and a lateral projection (3c) extending along one side of the elongate base (3a) for underlying the base (3a) of the adjacent barrel element (3) in the contracted or partially contracted state.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB909023157A GB9023157D0 (en) | 1990-10-24 | 1990-10-24 | Electrically powered handheld hair care appliance |
| GB9023157.2 | 1990-10-24 | ||
| GB919102630A GB9102630D0 (en) | 1991-02-07 | 1991-02-07 | Electrically powered handheld hair care appliance |
| GB9102630.2 | 1991-02-07 | ||
| US71109291A | 1991-06-06 | 1991-06-06 | |
| US07/711,092 | 1991-06-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2054071A1 CA2054071A1 (en) | 1992-04-25 |
| CA2054071C true CA2054071C (en) | 2002-07-16 |
Family
ID=27265336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2054071 Expired - Fee Related CA2054071C (en) | 1990-10-24 | 1991-10-23 | Electrically powered hand held hair curling appliance |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0482906B1 (en) |
| JP (1) | JP2768856B2 (en) |
| CN (1) | CN1043606C (en) |
| CA (1) | CA2054071C (en) |
| DE (1) | DE69107403T2 (en) |
| ES (1) | ES2071235T3 (en) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2578800Y2 (en) * | 1992-10-29 | 1998-08-13 | 東芝ホームテクノ株式会社 | Hair dryer |
| CA2853972A1 (en) * | 2011-10-31 | 2013-05-10 | Masood Habibi | Adjustable diameter cylindrical mechanism |
| JP6041153B2 (en) * | 2013-11-27 | 2016-12-07 | パナソニックＩｐマネジメント株式会社 | Hair iron |
| EP3119234B1 (en) | 2014-03-20 | 2021-11-17 | Dyson Technology Limited | Attachment for a hand held appliance |
| GB2524304B (en) * | 2014-03-20 | 2017-04-12 | Dyson Technology Ltd | Attachment for a hand held appliance |
| GB2526768B (en) * | 2014-03-20 | 2017-02-15 | Dyson Technology Ltd | Attachment for a hand held appliance |
| GB2524305B (en) * | 2014-03-20 | 2016-11-02 | Dyson Technology Ltd | Attachment for a hand held appliance |
| GB2526049B (en) | 2014-03-20 | 2017-04-12 | Dyson Technology Ltd | Attachment for a hand held appliance |
| GB2527834B (en) * | 2014-07-03 | 2018-02-21 | Dyson Technology Ltd | Attachment for a hair care appliance |
| CN104621940B (en) * | 2015-02-06 | 2017-05-10 | 覃波 | Hair curler capable of adjusting size of curled hair |
| CN104824955B (en) * | 2015-05-18 | 2017-01-18 | 东莞港电电器制品有限公司 | Perming device with diameter variable structure |
| GB2548616B (en) * | 2016-03-24 | 2020-02-19 | Dyson Technology Ltd | An attachment for a hand held appliance |
| GB2548814B (en) * | 2016-03-24 | 2019-09-11 | Dyson Technology Ltd | An attachment for a hand held appliance |
| AU2017236400B2 (en) | 2016-03-24 | 2019-11-21 | Dyson Technology Limited | Attachment for a handheld appliance |
| GB2548815A (en) * | 2016-03-24 | 2017-10-04 | Dyson Technology Ltd | An attachment for a hand held appliance |
| GB2548812B (en) * | 2016-03-24 | 2019-10-02 | Dyson Technology Ltd | An attachment for a hand held appliance |
| CN107041617A (en) * | 2017-02-24 | 2017-08-15 | 安徽师范大学 | Hair-dryer with curling functions |
| WO2019042763A1 (en) * | 2017-09-01 | 2019-03-07 | Babyliss Faco Sprl | Rotary blower brush with improved ergonomics |
| GB2602282B (en) * | 2020-12-22 | 2024-01-31 | Dyson Technology Ltd | A haircare appliance |
| GB2602283B (en) * | 2020-12-22 | 2023-11-15 | Dyson Technology Ltd | A haircare appliance |
| CN114190681B (en) * | 2021-01-21 | 2024-02-23 | 杭州乐秀电子科技有限公司 | Hair care hurricane cylinder |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3583409A (en) * | 1968-10-30 | 1971-06-08 | Robert Rios | Expansible and contractable hair curler |
| DE2529026A1 (en) * | 1975-06-28 | 1977-05-05 | Otto Huebner | Electric hair curling or setting rod - has semicircular rotary segments to vary rod diameter |
| US4496825A (en) * | 1979-07-23 | 1985-01-29 | Andis Company | Electric curling iron having a removable hair grooming attachment |
| JPS5634286A (en) * | 1979-08-29 | 1981-04-06 | Nec Corp | Picture data transmission system |
-
1991
- 1991-10-23 DE DE1991607403 patent/DE69107403T2/en not_active Expired - Fee Related
- 1991-10-23 CA CA 2054071 patent/CA2054071C/en not_active Expired - Fee Related
- 1991-10-23 CN CN91111127A patent/CN1043606C/en not_active Expired - Fee Related
- 1991-10-23 EP EP19910309787 patent/EP0482906B1/en not_active Expired - Lifetime
- 1991-10-23 ES ES91309787T patent/ES2071235T3/en not_active Expired - Lifetime
- 1991-10-24 JP JP3277970A patent/JP2768856B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0482906B1 (en) | 1995-02-15 |
| EP0482906A1 (en) | 1992-04-29 |
| ES2071235T3 (en) | 1995-06-16 |
| CN1061901A (en) | 1992-06-17 |
| CN1043606C (en) | 1999-06-16 |
| CA2054071A1 (en) | 1992-04-25 |
| DE69107403D1 (en) | 1995-03-23 |
| JPH05329021A (en) | 1993-12-14 |
| DE69107403T2 (en) | 1995-07-27 |
| JP2768856B2 (en) | 1998-06-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |