Support tables suitable for supporting a computer keyboard in front of a user and adapted for rotatable attachment to the side arms of a chair are provided. Each support table is hingedly attached to the front of each side arm so as to be pivotable about each of two orthogonal axes. The support tables...http://www.google.co.uk/patents/US5022706?utm_source=gb-gplus-sharePatent US5022706 - Adjustable keyboard chair
