US 12,252,892 B2
Slide-plate drop head and grid shoring systems
Bradley D. A. Bond, Waller, TX (US)
Assigned to Bond Formwork Systems, LLC, Waller, TX (US)
Filed by Bond Formwork Systems, LLC, Waller, TX (US)
Filed on Jun. 13, 2024, as Appl. No. 18/742,599.
Application 18/742,599 is a continuation of application No. 18/453,560, filed on Aug. 22, 2023, granted, now 12,071,774.
Prior Publication US 2024/0328183 A1, Oct. 3, 2024
Int. Cl. E04G 25/04 (2006.01); E04G 11/48 (2006.01); E04G 11/50 (2006.01); E04G 25/00 (2006.01); E04G 25/06 (2006.01)
CPC E04G 25/06 (2013.01) [E04G 11/486 (2013.01); E04G 11/50 (2013.01); E04G 25/00 (2013.01); E04G 25/04 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A slide-plate drop head for a grid shoring system, comprising:
a stand comprising a top plate, a bottom plate, a shaft extending between the top plate and the bottom plate, and a key strut defining a protrusion on the shaft;
a drop seat comprising a rail interface extending in a release direction, the drop seat captured on the shaft movable along the shaft between an upper position and a lower position;
a slide plate defining an eccentric key slot comprising a key strut abutment section shaped to block the slide plate from passing over the key strut to retain the drop seat in the upper position, and further comprising a key strut passage section shaped to allow the slide plate to pass over the key strut to drop the drop seat from the upper position to the lower position;
the slide plate further comprising an impact interface positioned to receive a strike from a hammer with sufficient force to drive the slide plate in a release direction from a first lateral position with the key strut abutment section aligned with the key strut to retain the drop seat in the upper position, to a second lateral position with the key strut passage section aligned with the key strut to release the drop seat to fall from the upper position to the lower position;
the rail interface configured to support a load bearing beam of the grid shoring system in the upper position while a wet concrete structure supported by the load bearing beam sets, and to support the load bearing beam as the slide plate is driven in the release direction to release the drop seat to fall from the upper position to the lower position after the concrete structure has set;
wherein the top plate defines a receptacle and the shaft defines an unobstructed bore for receiving a stringer jack extending through the top plate and the shaft while the drop seat falls from the upper position to the lower position.