Static structures (e.g. – buildings) – Footing or foundation type – Concrete type
Patent
1977-03-18
1977-11-29
Braun, Leslie
Static structures (e.g., buildings)
Footing or foundation type
Concrete type
52298, 52704, 52707, 52DIG4, E02D 2742
Patent
active
040599345
ABSTRACT:
An arrangement for fastening an upstanding post in a floorboard for use in indoor sports comprises a hollow cylindrical support into which the post loosely fits, having an opening provided in the circumferential wall thereof, the cylindrical support being embedded below the floorboard, a guide box which covers the opening in the cylindrical support, a headed screw rod rotatably supported in a vertical fashion in the guide box, a first wedge member screw-threadedly receiving the screw rod so that it may move upwards or downwards, a second wedge member received in the opening of the guide box so that it may move in the radial direction of the cylindrical support in accordance with the movement of the first wedge, a hole provided through the floorboard aligned in a vertical plane with the screw rod.
When a tool for turning the screw rod is inserted through the hole and rotated, the rotation of the screw rod in accordance with continuous rotation of the tool in a horizontal plane causes the first wedge member to move upwards or downwards, and thereby the second wedge member moves in the radial direction of the cylindrical member to securely fasten the post within the cylindrical support.
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Braun Leslie
Senoh Kabushiki Kaisha
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