(19)
(11) EP 3 413 320 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
24.07.2019 Bulletin 2019/30

(43) Date of publication A2:
12.12.2018 Bulletin 2018/50

(21) Application number: 18190872.4

(22) Date of filing: 25.08.2018
(51) International Patent Classification (IPC): 
H01C 7/102(2006.01)
 H01C 7/12(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 27.10.2017 US 201715795986

(71) Applicant: RIPD Research and IP Development Ltd.
2012 Nicosia (CY)

(72) Inventors:
  • TAVCAR, Tine
    1291 Skofljica (SI)
  • RUSTJA, Sasa
    1000 Ljubljana (SI)
  • CHOROZOGLOU, Alexis
    66100 Drama (GR)
  • PEPPAS, George
    66133 Drama (GR)
  • XEPAPAS, Fotis
    66132 Drama (GR)
  • POLITIS, Zafiris G.
    14565 St. Stefanos (GR)

(74) Representative: Yeadon IP Limited 
Leeds Innovation Centre 103 Clarendon Road
Leeds LS2 9DF
Leeds LS2 9DF (GB)

   


(54) OVERVOLTAGE PROTECTION DEVICE INCLUDING MULTIPLE VARISTOR WAFERS


(57) An overvoltage protection device (100) includes a first electrode member (122), a piston-shaped second electrode member (124), and a varistor assembly (150). The varistor assembly includes: a plurality of varistor wafers (152, 154, 156) each formed of a varistor material; and at least one electrically conductive interconnect member (160, 162) connecting the varistor wafers in electrical parallel between the first and second electrode members. The varistor wafers are axially stacked between the first and second electrodes. The assembly further comprises a bonding agent (164, 164') bonding at least two of the varistor wafers in the varistor assembly to one another.







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Search report