Pressure detection device
US-2017370792-A1 · Dec 28, 2017 · US
Pressure dection device for detecting pressure of fluid circulated through flow channel
US10281349B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10281349-B2 |
| Application number | US-201715427366-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 8, 2017 |
| Priority date | Jun 22, 2016 |
| Publication date | May 7, 2019 |
| Grant date | May 7, 2019 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
Provided is a pressure detection device including a pressure detection unit configured to detect a pressure to be transmitted to a pressure sensor, and a flow channel unit on which the pressure detection unit is disposed. The pressure detection unit) includes a pressure sensor and a conductive protective film disposed in contact with the pressure sensor, the conductive protective film breaking contact between the pressure sensor and a fluid. The conductive protective film is formed of a conductive fluororesin material including a fluororesin material and a conductive material dispersed in the fluororesin material and is connected to a ground portion maintained at a ground potential.
First claim
Opening claim text (preview).
The invention claimed is: 1. A pressure detection device comprising: a pressure detection unit configured to detect a pressure to be transmitted to a pressure detection portion; and a flow channel unit having a flow channel formed therein, the pressure detection unit being disposed on the flow channel unit, wherein the pressure detection unit includes: the pressure detection portion; and a thin film protective portion disposed in contact with the pressure detection portion, the thin film protective portion breaking contact between the pressure detection portion and a fluid, and wherein the thin film protective portion is formed of a conductive fluororesin material including a fluororesin material and a conductive material dispersed in the fluororesin material, and is connected to a ground portion maintained at a ground potential. 2. The pressure detection device according to claim 1 , wherein the conductive material is carbon nanotubes, and wherein the conductive fluororesin material contains the carbon nanotubes at a rate of 0.020 weight % to 0.030 weight %. 3. The pressure detection device according to claim 1 , wherein the pressure detection portion includes: a thin film diaphragm including a first surface in contact with the thin film protective portion; and a resistor attached to a second surface of the thin film diaphragm, the second surface of the thin film diaphragm being not in contact with the thin film protective portion, and wherein the thin film diaphragm is formed of a non-conductive material. 4. The pressure detection device according to claim 2 , wherein the pressure detection portion includes: a thin film diaphragm including a first surface in contact with the thin film protective portion; and a resistor attached to a second surface of the thin film diaphragm, the second surface of the thin film diaphragm being not in contact with the thin film protective portion, and wherein the thin film diaphragm is formed of a non-conductive material.
Assignees
Inventors
Classifications
using isolation membranes (G01L13/026 and G01L19/0645 take precedence) · CPC title
to the outside of the housing (other details about the housing see G01L19/14) · CPC title
Fluidic connecting means · CPC title
of piezoresistive elements (circuits therefor G01L9/06) · CPC title
- G01L9/0051Primary
using variations in ohmic resistance · CPC title
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Frequently asked questions
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- What does patent US10281349B2 cover?
- Provided is a pressure detection device including a pressure detection unit configured to detect a pressure to be transmitted to a pressure sensor, and a flow channel unit on which the pressure detection unit is disposed. The pressure detection unit) includes a pressure sensor and a conductive protective film disposed in contact with the pressure sensor, the conductive protective film breaking …
- Who is the assignee on this patent?
- Surpass Ind Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification G01L9/0051. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue May 07 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).