Dynamic support device for keyboards

DETAILED DESCRIPTION In accordance with the preferred embodiment of the present invention, there is provided a dynamic keyboard forearm, wrist and hand support device for use in conjunction with the keyboard of a video display terminal workstation.
The device generally comprises an elongate guide track having a pair of elongate support arms pivotally connected thereto which are selectively extensible into generally perpendicular relation to the track and are sized and configured to support a keyboard when extended.
Each of the support arms preferably includes an adjustment mechanism attached thereto for selectively adjusting the height of the keyboard relative the guide track.
In the preferred embodiment, each adjustment mechanism comprises a hinge member having a first half rigidly secured to the support arm and a second half pivotally movable in an upward direction away from the support arm.
Rotatably connected to the support arm is an elongate swing arm which defines a camming surface adjacent one end thereof.
The rotation of the swing arm in a first direction causes the camming surface to engage the hinge member in a manner causing the second half to be pivoted upwardly away from the support arm and thus raise the level of the keyboard.
Conversely, the rotation of the swing arm in a second direction causes the camming surface to be disengaged from the hinge member in a manner causing the second half to abut the support arm, thus lowering the level of the keyboard.
The support device further comprises a pair of support assemblies which are connected to the guide track and adapted to support a user's forearms, wrists and hands thereon.
In the preferred embodiment, each of the support assemblies comprises a carriage member which is slidably engaged to the guide track and movable longitudinally therealong.
The carriage member itself comprises a housing defining first, second and central portions and a pair of axle members extending laterally through the first portion of the housing in substantially parallel relation