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US 12,669,181 B2Granted
Expandable pipe stopper
AssigneeMueller International, LLC
InventorsJames Webber, Mohammad Unnus Qasim
Life of this patent
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Abstract
A pipe stopper includes an expandable stopper body configurable in an expanded configuration and a contracted configuration, the expandable stopper body comprising a shell defining a stopper cavity and further defining an opening providing fluid communication to the stopper cavity through the shell; a pressure assembly received in the stopper cavity and defining a housing cavity; and a valve stem defining a stem fluid pathway, the valve stem movable between an open position and a closed position.
Claims16
A pipe stopper comprising:
- an expandable stopper body defining a stopper axis and configurable in an expanded configuration and a contracted configuration, the expandable stopper body comprising a shell defining a stopper cavity and further defining an opening providing fluid communication to the stopper cavity through the shell;
- a pressure assembly received in the stopper cavity and defining a housing cavity;
- a valve stem defining a stem fluid pathway, the valve stem movable between an open position and a closed position;
- and
- an actuation arm comprising a distal arm end connected to the shell and a proximal arm end connected to the pressure assembly,
- wherein the proximal arm end is movable radially with respect to the stopper axis.
3 more elements
A pipe stopper comprising:
- an expandable stopper body configurable in an expanded configuration and a contracted configuration, the expandable stopper body comprising a shell defining a stopper cavity and further defining an opening providing fluid communication to the stopper cavity through the shell;
- a pressure assembly received in the stopper cavity and defining a housing cavity;
- and
- a valve stem defining a stem fluid pathway, the valve stem movable between an open position and a closed position;
- wherein:
- the shell is substantially cylindrical;
- the shell comprises a bendable arcuate shell body;
- and
- in the open position, the stem fluid pathway is in fluid communication with the housing cavity and the expandable stopper body is biased towards the expanded configuration, and in the closed position, the stem fluid pathway is not in fluid communication with the housing cavity and the expandable stopper body is biased towards the contracted configuration.
6 more elements
Dependencies are inferred from the claim text.