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US3784784A - Hair curler heating device with electric resistance cable - Google Patents

Hair curler heating device with electric resistance cable Download PDF

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Publication number
US3784784A
US3784784A US00196275A US3784784DA US3784784A US 3784784 A US3784784 A US 3784784A US 00196275 A US00196275 A US 00196275A US 3784784D A US3784784D A US 3784784DA US 3784784 A US3784784 A US 3784784A
Authority
US
United States
Prior art keywords
sectors
core
cable
low temperature
heating
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 - Lifetime
Application number
US00196275A
Other languages
English (en)
Inventor
L Geominy
H Gommans
L Mans
S Ruytenbeek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
US Philips Corp
Original Assignee
US Philips Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from NL6910582A external-priority patent/NL156889B/xx
Priority claimed from NL7009422A external-priority patent/NL7009422A/xx
Application filed by US Philips Corp filed Critical US Philips Corp
Application granted granted Critical
Publication of US3784784A publication Critical patent/US3784784A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/54—Heating elements having the shape of rods or tubes flexible
    • H05B3/56—Heating cables

Definitions

  • ABSTRACT A hair curler heater device having a base plate and a plurality of hollow cylindrical fingers mounted on and projecting from the base plate for receiving a hair curler to be heated. An electric resistance heating cable having high and low temperature sectors is arranged for heating the fingers. The high temperature sectors are accommodated within the fingers and the low temperature sectors are provided in the base plate.
  • the heating cable has a core of flexible nonconducting material and a heating wire helically wound about the core so as to form the high and low temperature sectors.
  • the low temperature sectors are formed by an odd number of layers of heating wire wound around the core in electrical contact with each other to form a plurality of partial resistors electrically connected in parallel. Alternate layers of the cold sectors are wound about the core in the same direction as the heating wire is wound about the core in the high temperature sectors and the number of layers in each of the low temperature sectors exceeds the number of layers in each high temperature sector by at least two.
  • the invention relates to an electric resistance heating cable comprising a flexible core of electrically insulating material, a heating wire wound helically around this core and extending throughout the length of the cable and a covering of electrically insulating material.
  • the cable is divided into at least two groups of alternating sectors extending along the cable. The different sectors produce different temperatures during use of the cable.
  • a cable of this kind is known from German Pat. No. 820,943.
  • the heating wire in the sectors which have the low temperature during use is wound at a greater pitch than in the sectors which have a higher temperature during'use.
  • the electric resistance heating cable disclosed in this patent sectors whose temperature does not increase or only increase to a relatiely low value during use are obtained by short-circuiting a number of windings of the heating wire at different distances along the cable by means of a conducting strip.
  • the strip is provided between the core and the windings of the heating wire.
  • An object of the present invention is to provide a construction for an electric resistance heating cable which avoids the drawbacks of the known constructions.
  • an electric resistance heating cable which satisfies the above is characterized in that an odd number of helically wound layers of heating wire are provided in the sectors of the cable which produce a relatively low temperature during use. These are in electrical contact with one another and these alternate layers are wound in the same direction as that in whichthe heating wire is wound in the sectors having a higher temperature during use.
  • the number of layers provided one across the other exceed the number of layers in the high temperature sectors by at least tWO.
  • a heating wire is understood to mean a wire of arbitrary shape and optionally a composite structure.
  • sectors which extend in the longituninal direction of the cable may be obtained in a simple manner without using other materials than that for the heating wire itself, which sectors have mutually different resistances per unit length and consequently a mutually different heat development during use.
  • three layers of heating wires are arranged one across the other in the low temperature sectors of the cable, while the heating wire is wound in a single layer in the higher temperature sec tors.
  • such a cable comprises a plurality of sectors having a comparatively high resistance and a plurality of sectors having a comparatively low resistance.
  • the latter sectors are produced by winding the heating wire in such a manner that a plurality of partial resistors is produced each of which convey only a part of the current which is passed through the heating wire in the other sectors.
  • the plurality of partial resistors present in a given sector determines the temperature which is reached during use in said sector, as a function of the load.
  • the heating wire may be wound at the same or a different pitch in the different sectors and in the layers located one on top of the other.
  • the first two layers located on the core are wound at a greater pitch than is the third layer.
  • a greater tempera ture difference is produced between the different sectors than in a construction in which the first two layers located on the core are wound at a pitch which is equal to that of the third layer.
  • Winding of the third layer at a small pitch produces a satisfactorily electrical contact between the different layers and facilitates the application of contacts which are reliable in operation.
  • the desired temperature difference may of course alternatively be obtained by winding a number of layers, greater than three one across the other at the same small pitch.
  • the core of the cable may consist of any electrically insulating organic or inorganic material which is resistant to the temperatures prevailing during use of the cable.
  • the core may have a single or composite structure and may comprise, for example, polyvinylchloride, silicon rubber, nylon, glass fibre, asbestos fibre, polytetrafluoroethylene and polyfluoroethylene propylene.
  • a central conductor may be provided within the core. This conductor extends throughout the length of the core and may be used for connector purposes when it is difficult to loop the cable or to establish contact in a different manner.
  • the heating wire may in principle comprise any electrically conducting material.
  • a material having a high positive temperature coefficient of the specific resistance is preferably used (0.002 or more per C) for example, nickel, copper.
  • the temperature difference in a given construction is increased and in case of a prescribed temperature difference less material may suffice' than when using materials having a low temperature coefficient.
  • the outer covering may consist of organic or inorganic materials, which are known for this purpose. In principle the same materials may be used as those which are suitable for the core.
  • the cable may be produced by' passing the core, which will generally have a circular cross-section, continuously in one direction through a winding device and to cause this device to perform a forward and backward movement along the core when single layers are to be wound one on top of the other.
  • a fixed winding point is used and the core is moved forward and backward when single layers are to be wound one on top of the other.
  • the core wound with the resistance wire is subsequently provided with an outer covering, for example, by winding and/or pleat ing it with glass or asbestos fibres or rayon or cotton, or by passing it through an extrusion device by which the cable is provided with a synthetic resin covering.
  • the outer covering may optionally consist of a plurality of apertures bodies of ceramic material.
  • the outer covering be appropriately marked or labelled.
  • the relative low temperature sectors can be found back by magnetic or electric means because of the presence of a greater quantity of metallic mate rial.
  • a marking device may be coupled to a device suit able for this purpose.
  • Cables according to the invention may be used in apparatus in which heat must be generated locally while the intermediate parts of the apparatus and the connecting points must not increase or increase only to a slight extent in temperature.
  • Cables according to the invention may be used, for example, in heaters for hair curlers in principle consisting of a plurality of hollow cylinders or fingers to be heated which project from a bottom plate onto which the hair curlers can be slid.
  • the sectors of the cable which reach a high temperature during use are accommodated in the fingers while the parts which remain comparatively cold are provided in the bottom plate.
  • Cables according to the invention may also be used in defrosters for refrigerators.
  • FIGS. l and 2 show on an enlarged scale cable sections according to the invention
  • FIG. 3 shows a heater for a hair curler using the cable of the invention.
  • the cable has a glass fibre core 1.
  • a heating wire 2 is wound on the core.
  • the heating wire 2 is wound in a single layer, the resistance being 30 ohms per metre.
  • the sectors A reach a temperature of approximately 400C during use at a load of 90 Watts per metre.
  • the heating wire 2 is wound in three layers.
  • the heating wire 2 is wound at a pitch which is approximately 20 times greater than the pitch in the sectors A (wire parts denoted by the reference numerals 3 and 4 in the Figure) in the same direction (in the Figure to the right-hand side) as in the previous sector A.
  • the heating wire is likewise wound at this greater pitch, but now in the opposite direction.
  • theheating wire is again wound at the same pitch and in the same direction'as in the previous sector A(in the Figure to the right-hand side).
  • the temperature insector B is approximately 509C dur ing use.
  • the length of the sectors B is equal to that of the sectors A.
  • the electrically insulating covering 8 of the cable may be a glass-fibre pleat having an overall thickness of 0.5 mm;
  • the cable of FIG. 2 has a central conductor 10 provided with a glass-fibre envelope 111 as a core.
  • a heating wire 12 is wound on this core.
  • the heating wire is wound in a single layer 12 in the visible sector A of the cable.
  • the heating wire is wound in three layers as described with reference to FIG. 1.
  • the cable has an outer covering 13 and two end pieces 14 and 15.
  • the end piece 14 serves to connect the heating wire T2 to the central conductor 10, being for example, a copper wire of low resistance.
  • the end piece l4 comprises an outer envelope 16 of electrically insulating material and a metal bush 17 which fits around the core including heating wire 12, which metal bush includes a metal cylinder 18 fitting around the central conductor.
  • the end piece 15 acts as an electrical contact. It consists of a bush of electrically insulating material which is provided with a metal inner bush 20 supporting a contact pin 21.
  • the end piece also supports a metal hollow pin 22 accommodating the part of the central conductor 10 protruding from the envelope
  • the covering 19 of the end piece may therefore consist of synthetic resin.
  • the advantage of this embodiment of the heating cable is that the electrical contact of the cable may be established on one side thereof.
  • FIG. 3 shows the cable as used in a heater 25 for hair curlers.
  • the heater has a base plate 26 and hollow cylindsical fingers 27 projecting from the plate for receiving thereon hair curlers to be heated.
  • the cable extends through the base plate 26 and fingers 27 with the high temperature sectors A being accommodated within the cylindrical fingers 27 so as to provide heat for the curlers and the low temperature sectors B being accommodated in the base plate.
  • a hair curler heater device comprising a base plate, at least one hollow cylinder mounted on and projecting from said base plate for receiving thereon a hair curler to be heated, an electric resistance heating cable having high and low temperature sectors arranged for heating said hollow cylinder, said high temperature sector being accommodated within said cylinders and said low temperature sectors being provided in said base plate, said heavint cable comprising a core of flexible non-conducting material, a heating wire helically wound about said core so as to form said high and low temperature sectors, said low temperature sectors being formed by an odd number of layers of heating wire in electrical contact with each other, alternate layers being wound about said core in the same direction as the heating wire wound about the core through the high temperature sector, said number of layers in the low temperature sector exceeding the number of layers in the high temperature sector by at least two, and an electrically insulating covering about said cable.
  • a hair curler heater device comprising a base plate, at least one hollow cylinder mounted on and projecting from said base plate for receiving thereon a hair curler to be heated, an electric resistance heating cable having high and low temperature sectors arranged for heating said hollow cylinder, said high temperature sector being accommodated within said cylinders and said low temperature sectors being provided in said base plate, said heating cable comprising a core of flexible ering about said cable.

Landscapes

  • Resistance Heating (AREA)
  • Hair Curling (AREA)
US00196275A 1969-07-10 1971-11-08 Hair curler heating device with electric resistance cable Expired - Lifetime US3784784A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL6910582A NL156889B (nl) 1969-07-10 1969-07-10 Elektrische weerstandsverhittingskabel.
NL7009422A NL7009422A (xx) 1970-06-26 1970-06-26

Publications (1)

Publication Number Publication Date
US3784784A true US3784784A (en) 1974-01-08

Family

ID=26644453

Family Applications (1)

Application Number Title Priority Date Filing Date
US00196275A Expired - Lifetime US3784784A (en) 1969-07-10 1971-11-08 Hair curler heating device with electric resistance cable

Country Status (13)

Country Link
US (1) US3784784A (xx)
JP (1) JPS5025662B1 (xx)
AT (1) AT303216B (xx)
BE (1) BE753185A (xx)
CA (1) CA932373A (xx)
CH (1) CH522345A (xx)
DE (1) DE2032235C3 (xx)
DK (1) DK126290B (xx)
ES (1) ES381562A1 (xx)
FR (1) FR2054412A5 (xx)
GB (1) GB1284385A (xx)
NO (1) NO129321B (xx)
SE (1) SE367905B (xx)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4250400A (en) * 1979-11-19 1981-02-10 The Scott & Fetzer Company Flexible temperature self regulating heating cable
US4262451A (en) * 1979-03-16 1981-04-21 P.H.-Tech, Inc. Roller assembly for a sliding frame closure
US4298787A (en) * 1980-01-17 1981-11-03 Appliance Design Probe Inc. Apparatus for heating and setting hair
US4304044A (en) * 1979-11-19 1981-12-08 The Scott & Fetzer Company Method for forming self-regulating heat trace cable
US4756320A (en) * 1984-04-13 1988-07-12 Outboard Marine Corporation Hair curling appliance with a heating element comprising a heating wire wound around an inner core
US6002117A (en) * 1998-03-10 1999-12-14 Pak; Il Young Electric heating cord with non-heating core-conducting element and reduced EMF emissions
US6300597B1 (en) * 1997-01-21 2001-10-09 Myoung Jun Lee Electromagnetic field shielding electric heating pad
US20040163662A1 (en) * 2003-01-16 2004-08-26 Conair Corporation Hair roller with a ceramic coating
US20160081140A1 (en) * 2013-04-23 2016-03-17 Kima Heating Cable Ab Power controlled heating system

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992008036A1 (en) * 1990-10-30 1992-05-14 Semen Zinovievich Erukhimovich Device to eliminate and prevent deposition of paraffin and hydrates in wells
CN107810660B (zh) 2015-07-01 2021-06-22 康斯博格汽车股份公司 电加热组件
CN107810659B (zh) * 2015-07-01 2021-09-28 康斯博格汽车股份公司 电加热元件
CN109830337A (zh) * 2019-03-30 2019-05-31 兰州众邦电线电缆集团有限公司 抗拉阻水防冰雪型中压三芯架空绝缘电缆及其制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1983862A (en) * 1932-07-12 1934-12-11 Leslie G Maness Soil warming device and method of manufacturing same
US2161202A (en) * 1937-03-29 1939-06-06 Us Appliance Corp Hair waving apparatus
US3045102A (en) * 1960-01-11 1962-07-17 Springfield Wire & Tinsel Comp Cold terminal resistance wire
US3473005A (en) * 1967-02-09 1969-10-14 Clairol Inc Hair roller heating apparatus
US3621203A (en) * 1970-06-26 1971-11-16 Philips Corp Electric resistance heating cable

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1983862A (en) * 1932-07-12 1934-12-11 Leslie G Maness Soil warming device and method of manufacturing same
US2161202A (en) * 1937-03-29 1939-06-06 Us Appliance Corp Hair waving apparatus
US3045102A (en) * 1960-01-11 1962-07-17 Springfield Wire & Tinsel Comp Cold terminal resistance wire
US3473005A (en) * 1967-02-09 1969-10-14 Clairol Inc Hair roller heating apparatus
US3621203A (en) * 1970-06-26 1971-11-16 Philips Corp Electric resistance heating cable

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4262451A (en) * 1979-03-16 1981-04-21 P.H.-Tech, Inc. Roller assembly for a sliding frame closure
US4250400A (en) * 1979-11-19 1981-02-10 The Scott & Fetzer Company Flexible temperature self regulating heating cable
US4304044A (en) * 1979-11-19 1981-12-08 The Scott & Fetzer Company Method for forming self-regulating heat trace cable
US4298787A (en) * 1980-01-17 1981-11-03 Appliance Design Probe Inc. Apparatus for heating and setting hair
US4756320A (en) * 1984-04-13 1988-07-12 Outboard Marine Corporation Hair curling appliance with a heating element comprising a heating wire wound around an inner core
US6300597B1 (en) * 1997-01-21 2001-10-09 Myoung Jun Lee Electromagnetic field shielding electric heating pad
US6002117A (en) * 1998-03-10 1999-12-14 Pak; Il Young Electric heating cord with non-heating core-conducting element and reduced EMF emissions
US20040163662A1 (en) * 2003-01-16 2004-08-26 Conair Corporation Hair roller with a ceramic coating
US6945255B2 (en) 2003-01-16 2005-09-20 Conair Corporation Hair roller with a ceramic coating
US20160081140A1 (en) * 2013-04-23 2016-03-17 Kima Heating Cable Ab Power controlled heating system
US10098185B2 (en) * 2013-04-23 2018-10-09 Kima Heating Cable Ab Power controlled heating system

Also Published As

Publication number Publication date
CA932373A (en) 1973-08-21
DE2032235B2 (de) 1973-06-20
SE367905B (xx) 1974-06-10
DE2032235C3 (de) 1974-01-17
DE2032235A1 (de) 1971-01-14
CH522345A (de) 1972-06-15
JPS5025662B1 (xx) 1975-08-26
NO129321B (xx) 1974-03-25
ES381562A1 (es) 1972-11-16
AT303216B (de) 1972-11-10
DK126290B (da) 1973-06-25
BE753185A (fr) 1971-01-08
GB1284385A (en) 1972-08-09
FR2054412A5 (xx) 1971-04-16

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