Abstract: A retina implant including a chip adapted to be implanted into the interior of eye in subretinal contact with the retina. The chip has a plurality of pixel elements on a side thereof facing the lens for receiving an image projected into the retina and a plurality of electrodes for stimulating retina cells. The implants further includes a receiver coil for inductively coupling thereinto electromagnetic energy. The receiver coil coupled to a means for converting an alternating voltage induced into the receiver coil in a direct voltage suited for supplying the chip. The receiver coil is configured as a component separate from the chip, and for being positioned on the eye ball outside the sclera. The chip is connected to the receiver coil via a connecting lead which, in the implanted condition interconnects the interior and the exterior of the eye ball.

Abstract: Powder, such as metallic powder for marking workpieces, consists of a blend of fine powder and of coarse powder.

Abstract: An ignition device for igniting flame cutters is directly connected with one of the passages for the fuel gas mixture to thereby assure a constantly certain ignition.

Abstract: A flame cutting machine includes an ignition system for igniting the fuel gas which is connected by a transverse bore to a longitudinal bore parallel to the blend canal of the machine.

Abstract: A device for marking workpieces by means of powder includes a nozzle from which emanates a powder spray circumscribed by a heating flame with a burner being at one end of the nozzle attached for powder marking and whose other end is attached to a powder container connected to the nozzle via a tube.

Abstract: A machine mounted torch includes a torch head to which a nozzle is exchangeably fastened by a holding device wherein two oppositely disposed support surfaces are provided for holding counter surfaces of a spring loaded bushing which holds the nozzle.

Abstract: A cutting torch for through cutting workpieces includes a torch stem having its cutting tip directed toward the workpiece with a shielding arrangement attached to the stem for enveloping the cutting area with a mixture of water and compressed air; separate water and air supply lines are each connected to circular canals within the shielding arrangement and nozzles are provided on the underside thereof connected via a through bore to the canals.