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US 10,719,032 B2Granted
Fluid storage device
AssigneeMurata Manufacturing Co., Ltd.
InventorMasamichi Ando
Life of this patent
Estimating the term…
Abstract
A fluid storage device includes a container and a torsion sensor. The container stores a fluid to be agitated. The torsion sensor has a substrate and detects torsion of the substrate. The substrate has a first end inserted in the container and a second end fixed to the container or a housing.
Claims21
A fluid storage device comprising:
- a container configured to store a fluid;
- and
- a torsion sensor including a substrate and a piezoelectric element configured to detect a torsion of the substrate when the fluid is stirred by a stirring mechanism not coupled to the torsion sensor,
- wherein the substrate has a first free end extending in the container and a second fixed end,
- wherein the piezoelectric film is configured to generate an electric charge when the fluid is stirred to change a voltage output from the torsion sensor indicating a presence of the liquid in the container, and
- wherein the torsion sensor is configured such that the piezoelectric element does not generate the electric charge in response to a bending displacement of the substrate.
3 more elements
A fluid storage device comprising:
- a container configured to store a fluid;
- and
- a torsion sensor including a substrate and a piezoelectric element configured to detect a torsion of the substrate when the fluid is stirred,
- wherein the substrate has a first free end extending in the container and a second fixed end opposite the first free end, and
- wherein the substrate has a rectangular shape extending into the container, such that the first free end has first and second corners being inserted into the container at a position, such that the first and second corners extend in opposite directions with respect to each other,
- wherein the piezoelectric film is configured to generate an electric charge when the fluid is stirred to indicate a presence of the liquid in the container, and the torsion sensor is configured such that the piezoelectric element does not generate the electric charge in response to a bending displacement of the substrate.
3 more elements
A fluid storage device comprising:
- a container configured to store a fluid;
- a torsion sensor including a substrate that has a first end fixed to at least one of the container and a housing of the fluid storage device and a second end disposed in the container;
- and
- a piezoelectric element coupled to the substrate and configured to generate an electric charge when the fluid is stirred in the container, such that the torsion sensor generates a voltage indicating a presence of the liquid in the container,
- wherein the torsion sensor is configured such that the piezoelectric element does not generate the electric charge in response to a bending displacement of the substrate.
2 more elements
A fluid storage device comprising:
- a container configured to store a fluid;
- and
- a torsion sensor including a substrate and configured to detect a torsion of the substrate when the fluid is stirred,
- wherein the substrate has a first free end extending in the container and a second fixed end, and
- wherein the torsion sensor is configured such that the torsion sensor does not detect a bending displacement of the substrate.
2 more elements
Dependencies are inferred from the claim text.