An armor with rollers is provided that enables a user to move in all positions by rolling on a hard and smooth surface while constantly varying his bearing points on the ground.
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| Number | Title | Issue Date |
| 6154911 | Debris lifting apparatus for use in a surface sweeping vehicle A debris lifting apparatus for use in a surface sweeping vehicle comprises an isolated debris lifting receptacle mounted on the surface sweeping vehicle for arrested positioning in a lower debris receiving position, whereat the debris lifting receptacle i... | 12/05/2000 |