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GB2020123A - Electrical protective devices - Google Patents

Electrical protective devices

Info

Publication number
GB2020123A
GB2020123A GB7914442A GB7914442A GB2020123A GB 2020123 A GB2020123 A GB 2020123A GB 7914442 A GB7914442 A GB 7914442A GB 7914442 A GB7914442 A GB 7914442A GB 2020123 A GB2020123 A GB 2020123A
Authority
GB
United Kingdom
Prior art keywords
current
temperature
sentinel
protective devices
temperature threshold
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.)
Granted
Application number
GB7914442A
Other versions
GB2020123B (en
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.)
THERMONETTE APPLIANCES Ltd
Original Assignee
THERMONETTE APPLIANCES Ltd
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
Application filed by THERMONETTE APPLIANCES Ltd filed Critical THERMONETTE APPLIANCES Ltd
Publication of GB2020123A publication Critical patent/GB2020123A/en
Application granted granted Critical
Publication of GB2020123B publication Critical patent/GB2020123B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
    • H02H5/042—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using temperature dependent resistors
    • H02H5/043—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using temperature dependent resistors the temperature dependent resistor being disposed parallel to a heating wire, e.g. in a heating blanket
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H01R13/6683—Structural association with built-in electrical component with built-in electronic circuit with built-in sensor

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

In order to prevent overheating in electrical connectors (which term includes switches) or components thereof, a temperature sentinel 32 is provided which causes an increased current to be drawn into the connector 13 when a temperature threshold is exceeded. Preferably the sentinel 32 is made from a short length of a dual conductor element having a heat- sensitive insulating material between the two conductors. This material becomes conductive when the temperature threshold is reached, so as to draw more current. This increase in current ensures that conventional over-current protective devices, such as fuses, operate. The use of temperature sentinels operating in the manner described above is described in relation to multi- pin connectors, for electric blankets and hand tools. The invention may be embodied into "no-access" fully moulded plugs. <IMAGE>
GB7914442A 1978-04-28 1979-04-25 Electrical protective devices Expired GB2020123B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1689778 1978-04-28

Publications (2)

Publication Number Publication Date
GB2020123A true GB2020123A (en) 1979-11-07
GB2020123B GB2020123B (en) 1982-07-28

Family

ID=10085658

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7914442A Expired GB2020123B (en) 1978-04-28 1979-04-25 Electrical protective devices

Country Status (1)

Country Link
GB (1) GB2020123B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4464005A (en) * 1982-05-24 1984-08-07 Precision Connector Designs, Inc. Temperature stabilized electrical connector
WO2014188130A1 (en) * 2013-05-22 2014-11-27 Legrand France Electrical apparatus comprising a temperature sensor housed in a support element

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4464005A (en) * 1982-05-24 1984-08-07 Precision Connector Designs, Inc. Temperature stabilized electrical connector
WO2014188130A1 (en) * 2013-05-22 2014-11-27 Legrand France Electrical apparatus comprising a temperature sensor housed in a support element
FR3006119A1 (en) * 2013-05-22 2014-11-28 Legrand France ELECTRICAL EQUIPMENT COMPRISING A TEMPERATURE SENSOR LOCATED IN A SUPPORT MEMBER
US9634438B2 (en) 2013-05-22 2017-04-25 Legrand France Electrical apparatus comprising a temperature sensor housed in a support element

Also Published As

Publication number Publication date
GB2020123B (en) 1982-07-28

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee