Patent ID: 8904860

Claim:
A fluid detection apparatus, comprising: a fluid holding chamber having an interior chamber to hold fluid and a plurality of entry portions into the interior chamber; a plurality of fluid detection members extending through the respective entry portions into the interior chamber, the fluid detection members configured to detect at least one of a presence and an absence of the fluid based on a level of the fluid in the interior chamber; and a plurality of fluid non-retention members within the interior chamber at the respective entry portions, a respective fluid detection member extending into the interior chamber through a respective entry portion and a respective fluid non-retention member, the fluid non-retention members including concave curved portions having a concavity in an outwardly direction from the respective fluid detection member, the fluid non-retention members configured to prevent retention of the fluid on at least one of the respective fluid detection members when the fluid holding chamber is in a fluid absence detection state, wherein the fluid absence detection state is based on the level of fluid being below the at least one fluid detection member.