US 11,732,810 B2
Pipe stopper
James Webber, Decatur, IL (US); and Mohammad Unnus Qasim, Decatur, IL (US)
Assigned to Mueller International LLC, Atlanta, GA (US)
Filed by Mueller International, LLC, Atlanta, GA (US)
Filed on Nov. 14, 2022, as Appl. No. 17/986,574.
Application 17/986,574 is a continuation of application No. 17/404,310, filed on Aug. 17, 2021, granted, now 11,525,518.
Prior Publication US 2023/0072298 A1, Mar. 9, 2023
Int. Cl. F16K 3/24 (2006.01); F16K 31/52 (2006.01); F16K 3/314 (2006.01); F16L 55/124 (2006.01); F16L 55/105 (2006.01)
CPC F16K 3/246 (2013.01) [F16K 3/314 (2013.01); F16K 31/523 (2013.01); F16L 55/105 (2013.01); F16L 55/124 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A pipe stopper comprising:
an expandable stopper body defining a stopper cavity and configurable in an expanded configuration and a contracted configuration;
a pressure assembly comprising a pressure housing and a piston, the piston slidably engaged with a housing cavity of the pressure housing, the piston operatively connected to the expandable stopper body; and
a locking assembly comprising a locking rod and a locking device, a lower end of the locking rod disposed within the housing cavity, the locking rod further comprising a rod engagement mechanism, the locking device comprising a locking engagement mechanism;
wherein the locking device is configurable in a locked configuration and an unlocked configuration, and wherein, in the locked configuration, the locking engagement mechanism engages the rod engagement mechanism to lock the expandable stopper body in the expanded configuration.