Koninklijke Philips Corporation N.V.

Elekta Ab (publ)

Jan Rietema

Duncan Neil Bourne

Christopher Charles Knox

Johan Overweg

We provide a radiotherapeutic apparatus comprising a patient support, magnetic coils disposed around the patient support for creating a magnetic field therewithin, a radiation source producing a beam of radiation directed toward the patient support and mounted on a rotatable support thereby to rotate the radiation source around the patient support, a slip ring for conveying electrical power to the radiation source and located around the patient support, including at least one electrical interruption therein. This creates a slip ring in which there is no continuous circumferential path, and one in which the current is therefore forced to take a route via one side or the other.

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AA Nuenen, Netherlands

Jan Rietema