Surge absorber
OwnerHitoshi Ohkuboinventor
Life of this patent
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Abstract
A surge absorber in which an electrically conductive thin film is vaporized on the surface of a ceramic circular cylinder, a micro.groove is trimmed using a laser beam to define a spiral locus on the surface, and a linear.groove is trimmed to intersect the micro.groove to divide the thin film into a plurality of segments, so that overvoltages applied across the two electrodes can be absorbed.
Claims6
A surge absorber comprising a ceramic cylinder on which a thin film is disposed, the thin film disposed on the cylinder having a micro groove extending therein in a spiral manner around the cylinder and a linear groove extending therein intersecting the micro groove, said linear groove having a width that is larger than the width of said micro groove.
Dependencies are inferred from the claim text.