Patent ID: 11864539
Assignee: GRAND SHRIMP, LLC
Field: Other special machines (Mechanical engineering)
Classification: CPC A  Y | IPC A

Claim 17:
18. An aquaculture system comprising:
a container for holding water and aquatic animals;
a drain; and
a drain valve that is movable between a closed position and an open position;
wherein the drain valve comprises:
an outer valve sheath with side walls that having openings that are sized to permit water to pass through the outer valve sheath and to impede the aquatic animals from passing through the outer valve sheath; and
an inner valve sheath positioned inside the outer valve sheath, wherein the inner valve sheath includes closed side walls and an opening having a threshold height;

wherein, when the drain valve is in the closed position, the drain valve permits water that is above the threshold height to flow into the opening, through the drain valve and out the drain to at least partially define a water level in the container, while impeding the aquatic animals from exiting the container through the drain;
wherein, when the drain valve is in the open position, the drain valve permits the water and the aquatic animals to flow out the drain.