US 11,988,073 B2
Drill stem greasing device and method
John A. Olander, Aurora, IL (US)
Assigned to TT Technologies, Inc., Aurora, IL (US)
Filed by TT Technologies, Inc., Aurora, IL (US)
Filed on Jul. 30, 2021, as Appl. No. 17/390,051.
Claims priority of provisional application 63/065,661, filed on Aug. 14, 2020.
Prior Publication US 2022/0049583 A1, Feb. 17, 2022
Int. Cl. E21B 41/00 (2006.01); E21B 7/04 (2006.01); E21B 19/16 (2006.01)
CPC E21B 41/00 (2013.01) [E21B 7/04 (2013.01); E21B 19/16 (2013.01)] 31 Claims
OG exemplary drawing
 
22. A method of injecting grease onto threads of a drill stem, comprising:
placing a drill stem thread adjacent to a grease injector;
closing a grease port on a side of an injection chamber using a single actuator;
actuating a piston within the injection chamber with the single actuator after the grease port is closed;
opening the grease port with the single actuator before the piston is in a reset position; and
returning the piston to the reset position with the single actuator after opening the grease port.