Height Adjustable Work Surface

Abstract

A height adjustable work surface is provided, which includes an L-shaped frame supporting a cantilevered platform adapted to support computer and work space items thereon. The frame includes an upstanding rail portion and a horizontal base support, whereby the rail portion slidably supports a work surface platform above the base support. The rail portion and base support are U-shaped members, whereby a first and second rail is provided to support the work space platform. Cam locks are provided to lockably secure the platform in a given position, whereby the platform will not freely slide until unlocked and will support load thereon. An internal spring mechanism biases the platform to reduce lifting load requirements during adjustment of the platform. Overall, the device provides a means to adjust the elevation of work surface for a seated or standing user.

I claim: 
     
         1 ) An adjustable work surface, comprising:
 a substantially L-shaped frame comprising a frame upper portion and a frame lower portion;   said frame lower portion comprising a substantially rectangular frame;   said frame upper portion comprising a substantially inverted U-shaped frame having a first and second upright member and an upper, horizontal member;   a first and second rail along said upright members;   a work space platform cantilevered from said frame upper portion and slidable along said first and second rail in a vertical direction;   at least one locking means adapted to secure said work space platform in a static position therealong along said first and second rail;   at least one spring disposed within said frame upper portion and connected to said work space platform for assisting upward motion.   
     
     
         2 ) The adjustable work surface of  claim 1 , wherein:
 said work space platform connects to said first and second rail by way of a protruding tongue.   
     
     
         3 ) The adjustable work surface of  claim 1 , wherein:
 said work space platform connects to said first and second rail by way of roller bearings.   
     
     
         4 ) The adjustable work surface of  claim 1 , wherein:
 said work space platform connects to said first and second rail by way of drawer sliders.   
     
     
         5 ) The adjustable work surface of  claim 1 , wherein:
 said at least one locking means comprises a cam lock connected to an armature that is adapted to frictionally lock said platform against said first and second rail.   
     
     
         6 ) The adjustable work surface of  claim 1 , wherein:
 said at least one locking means comprises a spring pin locking means comprising at least one spring pin and a plurality of spring pin holes disposed along said first and second rail.   
     
     
         7 ) The adjustable work surface of  claim 1 , wherein:
 said work space platform further comprises an upper surface supported by a platform frame;   said frame lower portion comprises an open interior;   said platform frame comprising a largely rectangular frame adapted to fit within said open interior of said frame lower portion.   
     
     
         8 ) The adjustable work surface of  claim 1 , wherein:
 said springs is connected internally within said first and second upright member;   said springs having a first and second end;   each spring first end being supported from an upper extent of said upright member;   each spring second end being connected to said platform.   
     
     
         9 ) The adjustable work surface of  claim 1 , wherein:
 said first and second rail extend only partially along the length of said upright members.