Flow rate control mechanism and gas chromatograph including flow rate control mechanism
US-2015346167-A1 · Dec 3, 2015 · US
Needle seal force sensor
US8997587B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8997587-B2 |
| Application number | US-201113520605-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 10, 2011 |
| Priority date | Jan 11, 2010 |
| Publication date | Apr 7, 2015 |
| Grant date | Apr 7, 2015 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
Described are techniques for force sensing. A computing device is configured to have a desired force setting. A first vertical position of a needle is determined using the computer device. A control signal is sent from the computing device to a positioning device. In response to the control signal, the needle is positioned at the first vertical position. When in the first vertical position, surfaces of a tip of the needle are in contact with surfaces of an opening of a sealing member and positioning the needle causes application of a force at surfaces of the opening in contact with surfaces of the tip of the needle. In response to application of the force, a spring is compressed a distance that is proportional to the force. The force is measured using a force sensor.
First claim
Opening claim text (preview).
What is claimed is: 1. An apparatus comprising: a needle positioned at a vertical position determined in accordance with a desired force setting; a positioning device configured to position said needle at said vertical position in response to control signals; a sealing member having a passage with a first opening at a first end for receiving one end of said needle, wherein positioning said needle at said vertical position causes application of a force, to an end face of said o…
Assignees
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Classifications
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
- G01N30/16Primary
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US8997587B2 cover?
- Described are techniques for force sensing. A computing device is configured to have a desired force setting. A first vertical position of a needle is determined using the computer device. A control signal is sent from the computing device to a positioning device. In response to the control signal, the needle is positioned at the first vertical position. When in the first vertical position, sur…
- Who is the assignee on this patent?
- Usowicz James E, Lin Tony A, Burnett Joshua A, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification G01N30/16. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Apr 07 2015 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).