Keyboard support tray with releasable wedge lock

摘要

A keyboard support assembly includes first and second arms which interconnect from a desktop mounting plate to a keyboard support platform. The first arm connects directly by pivot connections between the desk mounting plate and the keyboard support platform. The second arm connects from the desk mounting plate to the first arm and acts as a brace for the first arm. A locking wedge mechanism locks the arms together when weight is placed on the support platform due to engagement of an actuating arm which projects from the keyboard support platform and activates the wedge mechanism. Release of the weight or force on the platform releases the wedge locking mechanism and permits pivotal movement of the arms and reorientation of the platform.