초록 ▼

A retrofittable wheeled support for a dolly in which adjusting the length of the upper and lower frames adjusts the tilt angle at which the dolly is supported. Dolly ends of support tubes are detachably attachable to receivers that are mounted to the dolly frame so that the device can be easily remo

A retrofittable wheeled support for a dolly in which adjusting the length of the upper and lower frames adjusts the tilt angle at which the dolly is supported. Dolly ends of support tubes are detachably attachable to receivers that are mounted to the dolly frame so that the device can be easily removed or folded for storage. Dual wheel assemblies are provided for stability.

대표청구항 ▼

[ What is claimed is:] [1.] A device for a dolly, said dolly having an elongated upper portion attached to an elongated lower portion having a lower end, a blade projecting substantially perpendicularly forwardly from said lower portion at a blade level at least as low as said lower end, and two dol

[ What is claimed is:] [1.] A device for a dolly, said dolly having an elongated upper portion attached to an elongated lower portion having a lower end, a blade projecting substantially perpendicularly forwardly from said lower portion at a blade level at least as low as said lower end, and two dolly wheels approximately tangential to said blade level supporting said lower portion, said dolly wheels being approximately coaxial and defining a dolly wheel axis, comprising:an upper frame having right and left telescoping upper supports, each of said upper supports having a dolly end and a distal end;at least one transverse upper brace extending between said upper supports, whereby said upper brace maintains said distal ends of said upper supports in spaced apart relationship;a lower frame having right and left telescoping lower supports, each of said lower supports having a dolly end and a distal end;at least one transverse lower brace extending between said lower supports, whereby said lower brace maintains said distal ends of said lower supports in spaced apart relationship;wherein said distal ends of said upper supports and said distal ends of corresponding ones of said lower supports are angularly adjustably retained to pivot with respect to each other about a transverse elongated support wheel axis, said distal ends defining a right end and a left end of said support wheel axis and a support wheel axis length, wherein said support wheel axis is approximately parallel to said dolly wheel axis;right and left support wheel assemblies, each pivotably attached to said distal end of a corresponding support near a corresponding end of said support wheel axis to pivot in a plane that is perpendicular to said support wheel axis;upper receivers adapted to be attached to and movable along said upper portion of said dolly and adapted to angularly adjustably receive said dolly ends of said upper supports;lower receivers adapted to be attached to and movable along said lower portion of said dolly and adapted to angularly adjustably receive said dolly ends of said lower supports;whereby when said dolly ends of said supports are received in corresponding receivers, said supports can be telescoped and retracted to selected lengths so that said dolly can be tilted to a selected tilt angle at which said dolly wheel assemblies and said support wheels simultaneously contact the ground and support said dolly at said selected tilt angle;whereby adjusting said lengths of said supports adjusts said tilt angle.