US 11,851,956 B2
Dual rod assembly and collar installation method
Greg L. Slaughter, Jr., Perry, OK (US)
Assigned to The Charles Machine Works, Inc., Perry, OK (US)
Filed by The Charles Machine Works, Inc., Perry, OK (US)
Filed on Dec. 19, 2022, as Appl. No. 18/068,196.
Application 18/068,196 is a continuation of application No. 16/950,157, filed on Nov. 17, 2020, granted, now 11,536,094.
Claims priority of provisional application 62/937,586, filed on Nov. 19, 2019.
Prior Publication US 2023/0121030 A1, Apr. 20, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. E21B 17/16 (2006.01); E21B 17/042 (2006.01); E21B 17/046 (2006.01)
CPC E21B 17/16 (2013.01) [E21B 17/046 (2013.01); E21B 17/0426 (2013.01)] 23 Claims
OG exemplary drawing
 
20. A method comprising:
placing a collar over an end of a first pipe section, the collar having a through-passage with a first torque-transmitting section, a second torque-transmitting section, and an intermediate opening interposed between the first and second torque-transmitting sections;
placing a retainer having an outer profile such that it may not pass through the first torque-transmitting section or the second torque-transmitting section when in a first orientation and may pass through the first torque-transmitting section while in a second orientation;
while in the second orientation, passing the retainer through the second torque-transmitting section into the intermediate opening;
with the retainer within the intermediate opening, moving the retainer into the first orientation; and
with a bolt, attaching the retainer to the first pipe section with the retainer within the intermediate opening and the first pipe section within the first torque-transmitting section.