Check valve assembly
AssigneeZurn Water, LLC
InventorsWilliam M. Orr, Michael Alan Andrew
Life of this patent
Estimating the term…
Abstract
A check valve assembly includes a valve frame, a valve poppet, a first torsion spring, and a second torsion spring. The valve frame has an opening. The valve poppet is positionable in the opening. The valve poppet is moveable in a first direction to close the check valve assembly and moveable in a second direction to open the check valve assembly. The first torsion spring biases the valve poppet in the first direction. The second torsion spring biases the valve poppet in the first direction before the valve poppet has traveled a threshold distance. The second torsion spring biases the valve poppet in the second direction after the valve poppet has traveled the threshold distance.
Claims23
A check valve assembly comprising:
- a valve frame having an opening;
- a valve poppet positionable in the opening, the valve poppet linearly moveable in a first direction to close the check valve assembly and in a second direction to open the check valve assembly;
- a first torsion spring biasing the valve poppet in the first direction;
- and
- a second torsion spring biasing the valve poppet in the first direction before the valve poppet has traveled a threshold distance, the second torsion spring biasing the valve poppet in the second direction after the valve poppet has traveled the threshold distance.
A check valve assembly comprising:
- a frame having an opening defining a centerline of the check valve assembly;
- a poppet moveable from an open position toward a closed position in a first direction along the centerline, the poppet moveable from the closed position toward the open position in a second direction along the centerline;
- a first axle extending transverse to the first direction;
- a first torsion spring disposed about the first axle;
- a second axle extending transverse to the first direction, the second axle spaced a distance from the first axle;
- a second torsion spring disposed about the second axle;
- and
- a linkage system moveable with the poppet, the linkage system including
- a first link rotatably coupled to the first axle, and
- a second link rotatably coupled to the second axle, the second link rotatably coupled to the first link at a connection;
- wherein moving the poppet in the second direction toward the open position includes moving the connection arcuately about the first axle and along the second direction.
A check valve assembly comprising:
- a valve frame including
- a valve seat having an opening defined therein, and
- a pair of arms extending from the valve seat;
- a first axle coupled to each of the arms;
- a plane intersecting each of the valve seat, the pair of arms, and the first axle;
- a second axle spaced a distance from the first axle;
- a valve poppet moveable along the plane between a closed position and an open position, the valve poppet sealingly engaging the valve seat in the closed position;
- and
- a linkage system moveable with the valve poppet, the linkage system including
- a first link rotatably coupled to the first axle, and
- a second link rotatably coupled to the second axle, the second link rotatably coupled to the first link at a connection, the connection traveling away from the plane as the valve poppet moves toward the open position.
Dependencies are inferred from the claim text.