US 12,442,299 B2
Injection driver assembly for hollow bar bolt installation
Steven Immenschuh, Herriman, UT (US); Jeremy Hailey, Herriman, UT (US); Jordan Latva, Herriman, UT (US); Everett Bird, Salt Lake City, UT (US); Roman Karasek-Jimenez, Sandy, UT (US); and Buck Chamberlain, Wallsburg, UT (US)
Assigned to Cementation USA Inc., Sandy, UT (US)
Filed by Cementation USA Inc., Sandy, UT (US)
Filed on Jul. 25, 2023, as Appl. No. 18/358,422.
Prior Publication US 2025/0034997 A1, Jan. 30, 2025
Int. Cl. E21D 20/02 (2006.01); B23P 19/06 (2006.01)
CPC E21D 20/028 (2013.01) [B23P 19/067 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An injection driver assembly comprising:
a socket that is configured to rotate a hollow bar bolt;
a driver that is coupled to the socket and configured to rotate the socket; and
a housing assembly that is positioned around the driver and configured to enable the socket and driver to rotate relative to the housing assembly;
wherein the housing assembly, the driver, and the socket form a pathway for injecting a hardening product into the hollow bar bolt while the hollow bar bolt is positioned within the socket;
wherein the housing assembly includes a housing having one or more injection openings that form part of the pathway and opposing bushings that are positioned inside the housing on opposing sides of the one or more injection openings. wherein each bushing includes an exterior annular channel and the housing includes lubricant openings that align with the respective exterior annular channel. and wherein each bushing includes an interior annular channel and one or more coupling channels that extend between the exterior annular channel and the interior annular channel.