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Apparatus for generating high frequency shock waves provided with a screen which reduces the electric leakages

  • US 4,702,248 A
  • Filed: 10/27/1987
  • Issued: 10/27/1987
  • Est. Priority Date: 01/29/1986
  • Status: Expired due to Fees
First Claim
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1. In an apparatus for generating high frequency shock waves, comprising a truncated ellipsoidal reflector for reflecting the shock waves, comprising a cavity constituting a chamber for reflecting said shock waves of the same truncated ellipsoidal form, at least one of the two focal points of the ellipsoid is disposed in said chamber opposite said truncated part, said chamber being filled with a dielectric liquid for transmitting the shock waves, for example water or an oil, a shock wave generator device, conventionally comprising two electrodes, is disposed at least partly inside said chamber, with said two electrodes arranged to generate an electric arc or discharge at said focal point lying in said chamber opposite said truncated part;

  • and means are provided for selectively and substantially instantaneously delivering an electric voltage to said electrodes provoking said electric arc or discharge between said electrodes generating said shock waves in said liquid at said focal point, Wherein the improvement comprises the provision of an equipotential screen applied on said truncated part, being fast with the ellipsoidal reflector and directly connected to earth by its support formed by the ellipsoidal reflector itself.

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