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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 |
| 4452019 | Antiseismic reinforcement method for an existing building with a concrete block system A method of achieving earthquake reinforcement in existing buildings by piling hourglass-shaped concrete blocks within a beam pillar frame structure of a wall. The blocks are piled by staggering by half one pitch of the layer of concrete blocks and by fil... | 06/05/1984 |
| 4441289 | Earthquake-resistant reinforcement structure for an existing building with compression braces or tension braces A method for providing earthquake reinforcement for existing buildings by applying pre-compressive or pre-tensile stresses. In a first embodiment, a compression brace is provided on the beam pillar structure of the building in a diagonal direction to the ... | 04/10/1984 |
