Two plane, sound hard plates for use in arm chair, has specific thickness, where plates are adjustable to be provided perpendicular to ear level bent surface and bent together in horizontal direction, and are v-shaped opened to back of head
摘要
<p>The plates have a specific thickness and longness, where the plates are cross shaped and fixed at ends of two ball joint arms with variance in all space directions. The plates are step less and three dimensionally adjustable such it can be provided perpendicularly up to an easy bent surface in the ear level behind the head and are bent together in a horizontal direction. The plates are v-shaped opened to the back of a head.</p>
