US 12,442,368 B2
Plunger lift with an adjustable and variable clutch
Ryan Gernentz, Midland, TX (US); Travis Bayer, Conroe, TX (US); and Benjamin Garcia, Cypress, TX (US)
Assigned to Endurance Lift Solutions, LLC, Gainesville, TX (US)
Filed by Endurance Lift Solutions, LLC, Gainesville, TX (US)
Filed on May 3, 2024, as Appl. No. 18/654,706.
Claims priority of provisional application 63/463,792, filed on May 3, 2023.
Prior Publication US 2025/0207579 A1, Jun. 26, 2025
Int. Cl. F04B 47/12 (2006.01); E21B 43/12 (2006.01); F04B 53/00 (2006.01)
CPC F04B 47/12 (2013.01) [E21B 43/121 (2013.01); F04B 53/00 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A plunger, the plunger comprising:
a plunger body having a radially directed flow hole disposed therein;
a pin that is removable from the plunger body, the pin shifts back and forth in the plunger body to block the flow hole in a first position and allow fluid to flow through the flow hole in a second position;
a clutch mechanism supported by the pin to control the force necessary to shift the pin in the plunger body; and
a bumper portion supported by a body of the pin to limit the travel of the pin in the plunger body during operational use of the plunger, the bumper portion includes a bumper sleeve disposed on a neck portion of the pin.