Device for manually lifting a load with a lever for a cart, suitcase and the like

Abstract

Device for manually lifting a load such as a cart, suitcase and the like, making it easier to ascend and descend staircases and various obstacles. The device has a first part comprising a frame secured to wheels, and handles being fixed to the frame. A second part comprises a load support secured to the wheels and a load being mounted in a fixed manner on the load support, the second part being able to slide with respect to the first part by the action of a telescopic lever arm in order to ascend a step of a staircase in two phases, the telescopic lever arm being fixed to the handles by a first articulation, a second articulation connecting the telescopic lever arm to a transmission which is in turn connected by a third articulation to the load support of the second part.

What is claimed is: 
     
         1 . A device for facilitating movement of a load up a staircase, comprising:
 a load support for supporting said load, said load support including at least one load support wheel;   a frame including a plurality of frame wheels; and   a lever arm connecting said frame to said load support, said lever arm being movable in a first direction to cause said load support to slide upward relative to said frame, and being movable in a second direction to cause said load support to slide downward relative to said frame, such that said at least one load support wheel is caused to move from a first step of said staircase on which said plurality of frame wheels is resting to a second step of said staircase above said first step when said lever arm is moved in said first direction, and said plurality of frame wheels are caused to move from said first step to said second step when said lever arm is subsequently moved in said second direction.   
     
     
         2 . The device as set forth in  claim 1 , further comprising at least a second load support wheel integral with said load support. 
     
     
         3 . The device as set forth in  claim 1 , wherein said lever arm is telescopic.