Extendable assembly for supporting sofa table

Abstract

A sofa table is height adjustable and has a horizontal table top with all or a portion that can be raised in an upward direction laterally using a height extendable assembly. This capability will expand the use of the sofa table to serve the functions of an ordinary table that can be used for activities like writing or eating. The undercarriage includes an inclined adjustable assembly pivoted to the table top and the bottom of the leg frame assembly to enable sliding upwards and downwards movements. A controlling fixture is integrated into the adjustable assembly to lock the table top at the desired height level within its range of adjustment. A releasable angled lever is utilized to engage and disengage the locking mechanism is connected to the extendable assembly. A press on the lever will disengage the locking mechanism and while holding down the lever and with a lifting force applied simultaneously on the table top will allow the table top to elevate to the desired height within its range of adjustment.

1 . An extendable assembly for supporting sofa table comprising; 
 an extendable support member having opposing first and second support ends,    a height adjustable strut having opposing stationary and movable members,    a spring loaded locking mechanism coupled to the adjustable strut for locking the adjustable strut at a desirable distance,    wherein the stationary member of the strut is coupled to the bottom section of a leg member of the sofa table and the movable member of the strut is coupled to the bottom surface of the top face of the sofa table,    wherein the movable member of the strut may be moved toward and away from the stationary member when force is applied, wherein the extendable support members respectively collapse and extend in response to the application of force.    
     
     
         2 . The assembly of  claim 1 , wherein the extendable support member comprises: 
 a first support member comprising a first elongated arm; and    a second support member comprising a second elongated arm in a sliding relationship with the first elongated arm.    
     
     
         3 . The assembly of  claim 1 , wherein the movable member of the adjustable strut is in a sliding relationship with the stationary member, the movable member will engage the stationary member in a locking position when the locking mechanism is engaged to allow the table top to adjust to the desired height.  
     
     
         4 . The assembly of  claim 3 , wherein the locking mechanism is selected from the group consisting of spring load hook, mechanical height controlling fixture or mechanical lever, to engage and disengage the movable member of the adjustable strut to extend or collapse.  
     
     
         5 . An extendable assembly for supporting sofa table comprising: 
 a stationary strut member mounted in an inclined manner to a sofa table, wherein the bottom end of the stationary strut member is coupled to the bottom section of a leg member of the sofa table and top end of the stationary strut member is coupled to the bottom surface of the top face of the sofa table, the stationary strut member has a hollow a passage and a fixed wedge attached at a predetermined position in the passage, the fixed wedge is disposed such that an inclined surface is formed facing upwards;    a movable shaft member slidably coupled to the stationary strut member, wherein the top end of the movable shaft member is coupled to the bottom surface of the top face of the sofa table, the bottom surface of the movable shaft member is slidably mounted on the top surface of the stationary strut member;    a controlling fixture having a movable wedge positioned relatively at the bottom of the fixed wedge, wherein the movable wedge is disposed such that an inclined surface is formed facing downwards and engageable with the inclined surface of the fixed wedge, the movable wedge has a resilient gripper attached to a top surface thereof, the resilient gripper on the top surface facing towards and engaging the bottom surface of the movable shaft member;    an elongate rod slidably mounted through a through bore formed at the fixed wedge, wherein the bottom portion of the elongate rod is fixedly mounted through a through hole formed at the movable wedge;    a stopper is disposed at the bottom section of the stationary member, the stopper terminates the passage of the stationary member;    a resilient means is attached at the bottom end of the stopper and attached at the top end to the movable wedge; and    an angled fixture mounted to the top section of the opposing leg member, the angled fixture arranged to actuate the elongate rod and move the movable wedge towards the stopper; when the elongate rod is actuated by the angled lever, the movable wedge is forced to move downwards and the resilient means is compressed, the resilient gripper is released from its engagement with the movable shaft member and allows the sliding of the movable shaft member that facilitates the adjustment of height of the adjustable tabletop section; and when the elongate rod is released from the actuation of the angled fixture, the resilient means bias the movable wedge towards the fixed wedge and the elongate rod is being displaced upwardly in the passage, the inclined surface of the movable wedge is engaged with the inclined surface of the fixed wedge, the resilient gripper engages the movable shaft member and retain the movable shaft member to lock the adjustable tabletop section on a desired height.    
     
     
         6 . The height-adjusting device for a sofa table according to  claim 5 , wherein the angled fixture is operated by a resilient member to actuate the elongate rod.  
     
     
         7 . The height-adjusting device for a sofa table according to  claim 5 , wherein the resilient means is a spring.  
     
     
         8 . The height-adjusting device for a sofa table according to  claim 5 , wherein the resilient gripper is made of elastic material capable of gripping the movable shaft member when the resilient gripper is engaged to the movable shaft member.