Mems capacitive wall shear stress vector measurement system
US-2018252600-A1 · Sep 6, 2018 · US
Fluid analysis devices with shear stress sensors
US10697876B1 · US · B1
| Field | Value |
|---|---|
| Publication number | US-10697876-B1 |
| Application number | US-201916510014-A |
| Country | US |
| Kind code | B1 |
| Filing date | Jul 12, 2019 |
| Priority date | Jul 12, 2019 |
| Publication date | Jun 30, 2020 |
| Grant date | Jun 30, 2020 |
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- Title
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Abstract
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In some examples, a fluid analysis device (FAD) comprises a fluid chamber comprising an agitator and a shear stress sensor exposed to a surface within the fluid chamber.
First claim
Opening claim text (preview).
What is claimed is: 1. A fluid analysis device (FAD), comprising: a fluid chamber comprising an agitator, wherein the agitator comprises a rotating bob; and a micro-electro-mechanical system (MEMS) shear stress sensor having a fluid contact surface exposed to an opposing surface within the fluid chamber, wherein the MEMS shear stress sensor is positioned in a recess located on an outer surface the agitator such that the fluid contact surface is positioned about flush with the outer surface of the agitator. 2. The FAD of claim 1 , wherein the FAD comprises a fluid inlet to the fluid chamber and a fluid outlet from the fluid chamber, the fluid outlet being separate from the fluid inlet. 3. A fluid analysis device (FAD), comprising: a fluid chamber comprising an agitator; and a micro-electro-mechanical system (MEMS) shear s tress sensor exposed to a surface within the fluid chamber, wherein the MEMS shear stress sensor is positioned on the agitator, wherein the agitator comprises a rotating sleeve with a stationary bob positioned inside the rotating sleeve, wherein the MEMS is positioned on the bob. 4. A fluid analysis device (FAD), comprising: a fluid chamber comprising an agitator; and a shear stress sensor exposed to a surface within the fluid chamber, wherein the agitator comprises a sleeve, wherein the FAD comprises a bob positioned inside a sleeve, wherein the bob comprises first and second surfaces corresponding to different diameters of the bob, wherein the shear stress sensor is aligned parallel with the first surface, and wherein the FAD comprises another shear stress sensor aligned parallel with the second surface.
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Inventors
Classifications
electrical properties · CPC title
Yield stress; Residual stress at zero shear rate · CPC title
- G01N11/02Primary
by measuring flow of the material · CPC title
- G01N11/14Primary
by using rotary bodies, e.g. vane (G01N11/16 takes precedence) · CPC title
containing distinct electrical or optical devices of particular relevance for their function, e.g. microelectro-mechanical systems [MEMS] (B81B7/04 takes precedence) · CPC title
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Frequently asked questions
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- What does patent US10697876B1 cover?
- In some examples, a fluid analysis device (FAD) comprises a fluid chamber comprising an agitator and a shear stress sensor exposed to a surface within the fluid chamber.
- Who is the assignee on this patent?
- Halliburton Energy Services Inc
- What technology area does this patent fall under?
- Primary CPC classification G01N11/02. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jun 30 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).