US 12,071,774 B1
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 Aug. 22, 2023, as Appl. No. 18/453,560.
Application 18/453,560 is a continuation in part of application No. 18/219,553, filed on Jul. 7, 2023.
Claims priority of provisional application 63/485,087, filed on Feb. 15, 2023.
Int. Cl. E04G 25/04 (2006.01); E04G 11/48 (2006.01); E04G 25/06 (2006.01); E04G 25/00 (2006.01)
CPC E04G 11/486 (2013.01) [E04G 25/066 (2013.01); E04G 2025/006 (2013.01); E04G 2025/042 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A universal prop assembly for a grid shoring system for building construction, comprising:
an interchangeable prop stand;
an interchangeable stringer jack;
an interchangeable slide-plate drop head removably interconnecting the interchangeable prop stand with the interchangeable stringer jack, the slide-plate drop head further comprising a drop seat defining a bottom rail interface to removably support a bottom rail of the grid shoring system;
wherein the drop seat is selectively movable between an upper drop seat position and a lower drop seat position to move the bottom rail between an upper bottom rail position and a lower bottom rail position; and
a stringer jack comprising a threaded rod, a threaded collar movably captured on the threaded rod, and a stringer head connected to the threaded rod to support a top rail of the grid shoring system;
wherein the stringer jack telescopically interconnects with the slide-plate drop head to selectively move the stringer head with respect to the slide-plate drop head between an upper stringer head position and a lower stringer head position in response to rotation of the threaded collar to move the top rail between an upper top rail upper position and a lower top rail position;
wherein the slide-plate drop head comprises a slide plate, a rail interface extending in a release direction, and an impact interface positioned to receive a strike from a hammer with sufficient force to drive the slide plate in the release direction to release the drop seat to fall from the upper position to the lower position.