Mechanic support device

Abstract

A mechanic support device includes a rigid, parallel pair of base legs having horizontal lower portions and upwardly inclined upper portions, a pair of upper arms telescopically mounted in upper ends of the upper portions of the pair of base legs, a rigid step slidably mounted to, so as to extend between for substantially vertical or inclined sliding over the upper portions of the pair of base legs, and a rigid tray having a resilient pad mounted thereon, the tray slidably mounted on the pair of upper arms. The pair of upper arms includes lower sliding sections in telescopic mounting in the upper ends of the upper portions of the pair of base legs. The pair of upper arms also includes upper cantilevered sections extending cantilevered over, and substantially vertically aligned with, the lower portions of the pair of base legs.

What is claimed is:  
     
         1 . A mechanic support device comprising: 
 a) a rigid, parallel pair of base legs having horizontal lower portions and upwardly inclined upper portions,    b) a pair of upper arms telescopically mounted in upper ends of said upper portions of said pair of base legs,    c) a rigid step slidably mounted to, so as to extend between for substantially vertical sliding over said upper portions of said pair of base legs,    d) a rigid tray having a resilient pad mounted thereon and slidably mounted on said pair of upper arms, wherein said pair of upper arms include lower sliding sections in said telescopic mounting in said upper ends of said upper portions of said pair of base legs, and upper cantilevered sections extending cantilevered over, substantially vertically aligned with, said lower portions of said pair of base legs,    wherein said tray is slidably mounted, so as to slide cantilevered outwardly on, said upper cantilevered sections of said pair of upper arms,    first releasable locking means for releasably locking said step in an elevated position along said upper portions, and second releasable locking means for releasably locking said pair of upper arms in a telescoped position out of said pair of base legs.    
     
     
         2 . The device of  claim 1  wherein said step is the only cross-bracing support extending between said pair of base legs.  
     
     
         3 . The device of  claim 2  wherein said step includes a rigid horizontal platform rigidly mounted at opposite ends thereof to a first pair of collars snugly slidably journalled over said upper portions of said pair of base legs.  
     
     
         4 . The device of  claim 3  wherein each base leg of said pair of base legs is substantially L-shaped.  
     
     
         5 . The device of  claim 4  wherein each upper arm of said pair of upper arms is generally L-shaped and generally an inverted L-shape when mounted in said pair of base legs.  
     
     
         6 . The device of  claim 5  wherein said lower portions are substantially parallel to said upper cantilevered sections.  
     
     
         7 . The device of  claim 6  wherein said tray has a rigid platform extending between said pair of upper arms, and wherein said tray includes a parallel second pair of collars mounted to an underside of said platform, sized for snug sliding engagement over said upper cantilevered sections.  
     
     
         8 . The device of  claim 7  wherein said first and second pairs of collars, said pair of upper arms and said pair of base legs are each uniformly non-circular in cross section whereby said second pair of upper arms by reason of the snug fit of their non-circular cross section onto the uniformly non-circular cross section of said pair of upper arms provide for lateral cross-bearing of the pair of upper arms.  
     
     
         9 . The device of  claim 8  wherein said non-circular cross section is square.  
     
     
         10 . The device of  claim 9  wherein said first and second pairs of collars, said pair of upper arms and said pair of base legs are square tubing.  
     
     
         11 . The device of  claim 10  wherein said upper portions form an included angle of substantially eighty degrees with said lower portions.  
     
     
         12 . The device of  claim 11  further comprising wheels rotatably mounted to opposite ends of said lower portion of said pair of base legs.