Form panel quick fastener
OwnerTsan-Hsiung Chenginventor
Life of this patent
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OwnerTsan-Hsiung Chenginventor
Estimating the term…
A form panel quick fastener including a clamping plate having an elongated channel base fixedly fastened to a form panel at an outer side and a through hole disposed in the middle of the elongated channel base and aligned with a through hole of the form panel and a barrel raised from the elongated channel base at an inner side around the through hole of the clamping plate; a screw rod inserted through the through hole of the clamping plate and the through hole of the form panel and having a spiral groove around the periphery; and a ball thrust bearing sleeved onto the screw rod and forced into engagement with the barrel of the clamping plate to hold down the screw rod, the ball thrust bearing including a hexagonal head having a center through hole which receives the screw rod, a tubular flange perpendicularly raised from the hexagon head at one side around said center through hole of the hexagon head, a plurality of spiral holes spaced around the tubular flange at different elevations, and a plurality of steel balls respectively moved in the spiral holes and forced by an inside wall of the barrel of the clamping plate into engagement with the spiral groove of the screw rod.
A form panel quick fastener comprising a clamping plate, a screw rod, and a ball thrust bearing, said clamping plate having a first hole, said screw rod having an end with a spiral groove, and said ball thrust bearing including a tubular flange with movable steel balls,
A form panel quick fastener comprising a clamping plate, a screw rod, and a ball thrust bearing, said clamping plate having a first hole, said screw rod having an end with a spiral groove, and said ball thrust bearing including a tubular flange with movable steel balls,
A form panel quick fastener comprising a clamping plate, a screw rod, and a ball thrust bearing, said clamping plate having a first hole, said screw rod having an end with a spiral groove, and said ball thrust bearing including a tubular flange with movable steel balls,
Dependencies are inferred from the claim text.