Improved liquid sensor
AssigneeAspen Pumps Limited
InventorClaire Saich
Life of this patent
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Abstract
A liquid detector comprising a housing having a plurality of side walls and a bottom surface; a sensor mounted within a cavity of the housing and having a sensing surface configured to detect a liquid on an outer surface of a first of the plurality of side walls, and securing means to secure the housing relative to a surface of an external reservoir, wherein the plurality of side walls extends from a top end to a lower end, wherein the bottom surface has a profile comprising a first portion and a second portion, wherein the first portion and second portion are lower than the plurality of side walls, and wherein at least a lower-most point of the second portion is lower than at least one point of the first portion.
Claims15
A liquid detector comprising:
- a housing having side walls and a bottom surface;
- a sensor mounted within the housing and having a sensing surface configured to detect a liquid on an outer surface of at least one of the side walls, and
- securing means to secure the housing relative to a surface of an external reservoir,
- wherein each of the side walls extends from a top end to a lower end,
- wherein the bottom surface has a profile including a first portion and a second portion,
- wherein the first portion and second portion are lower than the side walls, and
- wherein at least a lower-most point of the second portion is lower than at least one point of the first portion.
A pump comprising a fluid inlet, a fluid outlet, a reservoir configured to receive liquid from the fluid inlet, a pump motor configured to pump liquid from the reservoir to the fluid outlet, and a liquid detector, wherein the liquid detector is adapted to detect a liquid level in the reservoir.
An adapter for a sensor comprising:
- a body having a side walls and a bottom surface, and
- securing means configured to secure the body to a housing of a sensor, the housing having a defined surface on which liquid is detected by the sensor,
- wherein the side walls extends from a top end to a lower end,
- wherein the bottom surface has a profile having a first portion and a second portion,
- wherein the first portion and second portion are lower than the side walls,
- wherein a lower-most point of the second portion is lower than at least one point of the first portion,
- wherein the body is configured to receive at least a part of the sensor housing, and wherein a first of the side walls is in contact with the defined surface of the liquid sensor, such that, in use, the liquid sensor can detect liquid on the first of the side walls.
Dependencies are inferred from the claim text.