GB1338954A – Electric hair curlers
– Google Patents
GB1338954A – Electric hair curlers
– Google Patents
Electric hair curlers
Info
Publication number
GB1338954A
GB1338954A
GB2040271A
GB2040271A
GB1338954A
GB 1338954 A
GB1338954 A
GB 1338954A
GB 2040271 A
GB2040271 A
GB 2040271A
GB 2040271 A
GB2040271 A
GB 2040271A
GB 1338954 A
GB1338954 A
GB 1338954A
Authority
GB
United Kingdom
Prior art keywords
crystalline
filled
sleeve
resistance
electrically
Prior art date
1970-01-27
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
Application number
GB2040271A
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.)
Texas Instruments Inc
Original Assignee
Texas Instruments Inc
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.)
1970-01-27
Filing date
1971-10-29
Publication date
1973-11-28
1971-10-29
Application filed by Texas Instruments Inc
filed
Critical
Texas Instruments Inc
1972-02-11
Priority to US00225463A
priority
Critical
patent/US3780642A/en
1973-11-28
Publication of GB1338954A
publication
Critical
patent/GB1338954A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
A45D2/00—Hair-curling or hair-waving appliances ; Appliances for hair dressing treatment not otherwise provided for
A45D2/36—Hair curlers or hair winders with incorporated heating or drying means, e.g. electric, using chemical reaction
Abstract
1338954 Electrically heated hair curlers TEXAS INSTRUMENTS Inc 19 April 1971 [27 Jan 1970] 20402/71 Heading A4V [Also in Division H5] An electrically heated device comprises an element, composed of a conductive-filled crystalline polymer having a positive temperature coefficient of resistance above an anomaly point, which acts both as a self-regulating heater and as a heat storing means. The illustrated example is a hair curler which has a cylindrical outer shell 12 with a plurality of fingers 14 extending outwards therefrom. The element 22 is a hollow cylindrical moulding which may be made of a polyolefin filled with carbon black and has a conducting coating on its inner and outer faces. These coatings may be of electroless nickel or electroplated tin. A cylindrical sleeve 24 which may be of copper is pressed into the bore of the element and is in electrical contact with the pin 28 by the member 26 which may be formed integrally with sleeve 24. The outer face of the element is surrounded by a conducting sleeve 32 which is bent over at 34 to enclose pin 44. To increase the electrical contact the space between the plate 42 and base 34 may be filled with solder or the plate may be connected electrically to the conducting rim 38. Annulus 40 is made of an insulating material. In use the hair curler is heated electrically. Below the crystalline melting point of the polymer the resistance is constant but once the crystalline structure is broken down the resistance of the element increases, which effectively limits the current when the operating temperature is reached obviating the need for thermostatic control. The heat storing capabilities of the element are enhanced by the latent heat associated with the phase change from the crystalline to the amorphous polymer.
GB2040271A
1970-01-27
1971-10-29
Electric hair curlers
Expired
GB1338954A
(en)
Priority Applications (1)
Application Number
Priority Date
Filing Date
Title
US00225463A
US3780642A
(en)
1971-10-29
1972-02-11
Casserole
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US609570A
1970-01-27
1970-01-27
Publications (1)
Publication Number
Publication Date
GB1338954A
true
GB1338954A
(en)
1973-11-28
Family
ID=21719274
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB2040271A
Expired
GB1338954A
(en)
1970-01-27
1971-10-29
Electric hair curlers
Country Status (6)
Country
Link
JP
(1)
JPS5513721B1
(en)
CA
(1)
CA931196A
(en)
DE
(1)
DE2103303B2
(en)
DK
(1)
DK129378B
(en)
FR
(1)
FR2077022A5
(en)
GB
(1)
GB1338954A
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
WO2011015874A1
(en)
2009-08-05
2011-02-10
Next Row Limited
Induction heated hair rollers
Families Citing this family (9)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4177376A
(en)
1974-09-27
1979-12-04
Raychem Corporation
Layered self-regulating heating article
US4330703A
(en)
1975-08-04
1982-05-18
Raychem Corporation
Layered self-regulating heating article
DE2504237C3
(en)
*
1975-02-01
1982-01-07
Braun Ag, 6000 Frankfurt
Electric hair treatment device
AT377408B
(en)
*
1975-03-07
1985-03-25
Rueling Felix
METHOD FOR COATING METAL BODIES AND ELECTRICALLY CONDUCTIVE COATING PRODUCED BY THIS METHOD
US4188276A
(en)
*
1975-08-04
1980-02-12
Raychem Corporation
Voltage stable positive temperature coefficient of resistance crosslinked compositions
JPS5824124B2
(en)
*
1978-10-05
1983-05-19
松下電器産業株式会社
hair adjustment tool
US4543474A
(en)
*
1979-09-24
1985-09-24
Raychem Corporation
Layered self-regulating heating article
DE3246775A1
(en)
*
1982-12-17
1984-07-12
Robert 7990 Friedrichshafen Kolb jun.
Heating apparatus which can be heated electrically
EP0446643A1
(en)
*
1990-03-13
1991-09-18
Goldwell Aktiengesellschaft
Device for forming human hair
1971
1971-01-15
CA
CA102858A
patent/CA931196A/en
not_active
Expired
1971-01-25
DE
DE19712103303
patent/DE2103303B2/en
active
Granted
1971-01-26
DK
DK33371A
patent/DK129378B/en
unknown
1971-01-26
JP
JP258571A
patent/JPS5513721B1/ja
active
Pending
1971-01-27
FR
FR7102617A
patent/FR2077022A5/fr
not_active
Expired
1971-10-29
GB
GB2040271A
patent/GB1338954A/en
not_active
Expired
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
WO2011015874A1
(en)
2009-08-05
2011-02-10
Next Row Limited
Induction heated hair rollers
Also Published As
Publication number
Publication date
JPS5513721B1
(en)
1980-04-11
FR2077022A5
(en)
1971-10-15
CA931196A
(en)
1973-07-31
DK129378B
(en)
1974-10-07
DE2103303B2
(en)
1972-12-07
DE2103303A1
(en)
1971-08-12
DK129378C
(en)
1975-03-03
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Legal Events
Date
Code
Title
Description
1974-04-10
PS
Patent sealed
1991-05-22
PE20
Patent expired after termination of 20 years
