US 4,398,737 AGranted

Transport device for wheelless power driven equipment

AssigneeEquipment Development Company, Inc.

InventorEdward M. Harding

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Abstract

A detachable wheeled dolly or hybrid roller skate device for separable connection to the base portion and the handle of relatively large and heavy wheelless power driven handle manipulated machines is disclosed whereby an upward push on lifting the handle tilts the machine from out of surface contact and allows the roller skate device to swing under the machine. A subsequent lowering of the machine allows the roller skate device to support the machine, whereby a downward push on the handle tilts the machine out of surface contact and facilitates transport of the machine from one location to another as required. The centroid or center of mass of the hybrid roller skate device is located so that the roller skate device will swing under the machine to be supported.

Claims4

Dependent claims

A portable hybrid roller skate device for use in transporting a relatively large and heavy surface treating machine having a base rim across a surface, said device comprising:

a body;
pivot hook means integral with said body for hooking over and pivoting about the base rim of said surface treating machine;
said roller skate device having a centroid located so that when the base rim of said surface treating machine nearest said pivot hook means is lifted from a resting position on said surface, said roller skate pivots about said base rim and swings under said surface treating machine to remain under said machine when said machine is returned to a resting position to support at least a portion of said machine;
and
roller means mounted on said body for contacting said surface when said roller skate device supports said machine, said roller means allowing the device to be easily transported.

2 more elements

Dependencies are inferred from the claim text.