Roller seat, and carrier for a very-large-capacity tool and material holder also mountable atop a step ladder

Abstract

A combination (i) roller seat and (ii) tool and material carrier is preferably used with a hollow body tool and material holder detachably mountable to the upper region of an open step ladder. The combination roller seat and carrier has a substantially planar base with a structure in the shape of a truncated frustum attached to and extending above the base, this structure occupying a same shape and volume as does a truncated frustaconical upper region of a open step ladder. Wheels to the base permit a person to sit upon the top of the structure while the base rolls upon the wheels, making thereby a roller seat. When the hollow body tool and material holder detachably mountable to the upper region of the open step ladder is alternatively mounted over the structure, the structure serves at least indirectly to hold any tools and materials that are also held by this hollow body holder.

1 . A combination (i) roller seat and (ii) tool and material carrier for use with a hollow body tool and material holder detachably mountable to the upper region of an open step ladder, the combination roller seat and carrier comprising: 
 a substantially planar base;    a structure in the shape of a truncated frustum attached to and extending above the base, this structure occupying a same shape and volume as does a truncated frustaconical upper region of a open step ladder; and    wheels to the base;    wherein a person may sit upon the top of the structure while the base rolls upon the wheels, making thereby a roller seat; and    wherein a hollow body tool and material holder detachably mountable to the upper region of the open step ladder can, alternatively to being mounted upon the step ladder, be mounted over the structure, making thereby that the structure serves at least indirectly to hold any tools and materials that are also held by this hollow body holder.    
   
   
       2 . The combination roller seat and carrier according to  claim 1  further comprising: 
 a planar extension region to the base extending beyond a region where the base attaches the structure in the shape of a truncated frustum, the extension region providing a level surface upon which tools and materials may be placed exclusively of the frustum structure or of any external holder mounted upon the frustum structure.    
   
   
       3 . The combination roller seat and carrier according to  claim 2  for use with a hollow body tool and material holder detachably mountable to the upper region of the open step ladder which holder also has an extending pouch capable of holding a paint can; 
 wherein the planar extension region to the base is of suitable (i) elevation above the base, (ii) size and (iii) shape so as to support the pouch of the holder and any paint can that is within the pouch.    
   
   
       4 . The combination roller seat and carrier according to  claim 1   wherein the frustum structure to the base is hollow, and open along at least one side surface so that tools and materials can be stored to the interior of the hollow frustum structure.    
   
   
       5 . The combination roller seat and carrier according to  claim 1   wherein the frustum structure to the base has and defines in it's upper surface a slot through which fingers of the hand may be passed, thus to serve as a handle, at least such times as the holder is not mounted to the frustum structure.    
   
   
       6 . The combination roller seat and carrier according to  claim 1  further comprising: 
 posts extending downwards from the base which posts serve, in combination with the wheels, to prevent that the combination roller seat and carrier should tip over nonetheless that holder, and any tools and materials held by the holder, be attached to the frustum structure.    
   
   
       7 . The combination roller seat and carrier according to  claim 1  for use with a hollow body tool and material holder having attaching straps, the combination roller seat and carrier further comprising: 
 apertures defined by, and in, any one or ones of the base and the frustum structure which apertures pass the straps of the holder so as to secure the holder to the frustum structure.    
   
   
       8 . A combination (i) roller seat and (ii) tool and material carrier comprising: 
 a substantially planar base having and upper surface with adjacent first and second regions, and a lower surface;    a hollow structure in the substantial shape of a truncated frustum, this structure affixed to the planar base in the base's first region, this structure suitably holding tools and materials within its hollow interior while presenting a substantially flat upper surface suitable to serve as a seat;    wherein the bases's second upper surface region is adjacent to the hollow structure, and suitable to support tools and materials; and    wheels to the base;    wherein a person may sit upon the top of the structure while the base rolls upon the wheels, making thereby a roller seat; and    wherein an external hollow body tool and material holder otherwise detachably mountable to the upper region of the open step ladder can, alternatively to being so mounted upon the step ladder, be mounted over the structure, making thereby that the structure serves at least indirectly to hold any tools and materials that are also held by this hollow body holder.