A screen clamp including a track configured to secure a shaker screen to a shaker, the track including an angled surface configured to contact a corresponding beveled edge of the shaker screen, the screen clamp further including an upper retainer configured to extend from an inner wall of the shaker over at least a portion of the shaker screen. The tap: is connected on its inner end with a riser line; comprises an outside tube in which an inside tube is slidably arranged; has a terminal coupling of the outside tube that is located at the end of the riser line; and is formed so that the inside tube comprises a projection which closes the riser line when the tap is in its pushed-in condition. , acceleration sensors andor pressure sensors for sensing a side crash. Anisotropically etching the gate structure areas provides spacers on the gate structure areas.