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US 10,571,350 B2Granted
Pressure sensor
AssigneeNabtesco Corporation
InventorTakashi Mizoguchi
Life of this patent
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Abstract
A pressure sensor is provided with a cylindrical body made of a magnetostrictive material and configured to be deformed under a pressure of a fluid flowing inside and a detection portion configured to detect a change in magnetic field caused by distortion of the cylindrical body. The cylindrical body is provided with a peripheral wall portion curved or bent in an axial direction of the cylindrical body.
Claims4
A pressure sensor, comprising:
- a cylindrical body made of a magnetostrictive material and configured to be deformed under a pressure of a fluid flowing inside;
- and
- a detection portion for detecting a change in magnetic field caused by distortion of the cylindrical body,
- wherein the cylindrical body includes a peripheral wall portion that is either curved or bent in an axial direction of said cylindrical body,
- wherein the peripheral wall portion of the cylindrical body has a uniform thickness, and
- wherein a part of the peripheral wall portion in the axial direction of the cylindrical body protrudes to a radially inner side or a radially outer side of the cylindrical body.
3 more elements
A pressure sensor, comprising:
- a cylindrical body made of a magnetostrictive material and configured to be deformed under a pressure of a fluid flowing inside, the cylindrical body including a peripheral wall portion from which one or more protruding portions protrudes to a radially inner side, wherein one or more surfaces of the one or more protruding portions intersect with an axial direction of the cylindrical body and each constitute a stepped surface;
- and
- a detection portion for detecting a change in magnetic field of the cylindrical body.
Dependencies are inferred from the claim text.