Liquid level detection device and method of manufacturing the same

US9506799B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9506799-B2
Application numberUS-201314430197-A
CountryUS
Kind codeB2
Filing dateSep 6, 2013
Priority dateSep 28, 2012
Publication dateNov 29, 2016
Grant dateNov 29, 2016

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  2. Abstract

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  4. Key dates

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  5. First independent claim

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Abstract

Official abstract text for this publication.

Provided is a liquid level detection device with excellent bonding strength between components. This liquid level detection device is provided with a holder which has a magnet inside and which rotates in response to displacement of a float floating in the liquid the level of which is to be measured, a main body unit which rotatably supports the holder and has a magnetic detection element which detects magnetic pole change accompanying rotational movement of the magnet, and a cover which covers the holder and which is attached by welding to the main body unit to prevent the holder from falling away from the main body unit. The cover is welded to the main body unit by melting protrusions formed on the main body unit.

First claim

Opening claim text (preview).

The invention claimed is: 1. A liquid level detection device comprising: a holder that has a magnet inside, and rotates in accordance with displacement of a float floating on liquid that is a measuring object of liquid level; and a main body unit that comprises a magnetic detection element for detecting a change in a magnetic pole accompanying rotation of the magnet, a capacitor, and a terminal that is electrically connected to the magnetic detection element and the capacitor,…

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What does patent US9506799B2 cover?
Provided is a liquid level detection device with excellent bonding strength between components. This liquid level detection device is provided with a holder which has a magnet inside and which rotates in response to displacement of a float floating in the liquid the level of which is to be measured, a main body unit which rotatably supports the holder and has a magnetic detection element which …
Who is the assignee on this patent?
Nippon Seiki Co Ltd
What technology area does this patent fall under?
Primary CPC classification G01F23/38. Mapped technology areas include Physics.
When was this patent published?
Publication date Tue Nov 29 2016 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).