GB1505035A - Overload protection tube - Google Patents

Overload protection tube

Info

Publication number
GB1505035A
GB1505035A GB1703576A GB1703576A GB1505035A GB 1505035 A GB1505035 A GB 1505035A GB 1703576 A GB1703576 A GB 1703576A GB 1703576 A GB1703576 A GB 1703576A GB 1505035 A GB1505035 A GB 1505035A
Authority
GB
United Kingdom
Prior art keywords
electrode
enclosure
electrodes
overload protection
tube
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
Application number
GB1703576A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric 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
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Priority to GB1703576A priority Critical patent/GB1505035A/en
Publication of GB1505035A publication Critical patent/GB1505035A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T1/00—Details of spark gaps
    • H01T1/14—Means structurally associated with spark gap for protecting it against overload or for disconnecting it in case of failure

Abstract

1505035 Overload protection discharge tube INTERNATIONAL STANDARD ELECTRIC CORP 27 April 1976 17035/76 Heading H1D An overload protection device comprises a discharge tube having electrodes 1-10 and 2-5 defining a discharge gap L in a sealed enclosure 3, the electrode 1-10 being mounted in a plug 7 of material which softens when the tube reaches a predetermined temperature, whereby external pressure pushes the electrode into the enclosure, and the discharge gap is short-circuited. As shown, the other electrode 2-5 is integral with the enclosure 3, which is made of metal, e.g. aluminium, copper, or iron-nickel-cobalt alloy. The plug 7 is made of glass, and is bonded against an internal shoulder 8 of the enclosure 3. The electrode 2-5 may have a recess 6 containing emissive material, and the tube may contain argon and helium at 0À3 atmos. One or both electrodes may have a conductive coating which will melt at the predetermined temperature to wet the electrodes to improve contact.
GB1703576A 1976-04-27 1976-04-27 Overload protection tube Expired GB1505035A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1703576A GB1505035A (en) 1976-04-27 1976-04-27 Overload protection tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1703576A GB1505035A (en) 1976-04-27 1976-04-27 Overload protection tube

Publications (1)

Publication Number Publication Date
GB1505035A true GB1505035A (en) 1978-03-22

Family

ID=10088073

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1703576A Expired GB1505035A (en) 1976-04-27 1976-04-27 Overload protection tube

Country Status (1)

Country Link
GB (1) GB1505035A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987004017A1 (en) * 1985-12-18 1987-07-02 Cerberus Ag Spark gap, in particular for use as a pre-spark gap of a spark plug of an internal combustion engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987004017A1 (en) * 1985-12-18 1987-07-02 Cerberus Ag Spark gap, in particular for use as a pre-spark gap of a spark plug of an internal combustion engine
EP0229303A1 (en) * 1985-12-18 1987-07-22 Cerberus Ag Spark gap, particularly for use as booster gap for a sparking plug of an internal combustion engine

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee