Working fluid filtering device for electrical discharge machine

US8932459B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-8932459-B2
Application numberUS-201213613162-A
CountryUS
Kind codeB2
Filing dateSep 13, 2012
Priority dateDec 21, 2011
Publication dateJan 13, 2015
Grant dateJan 13, 2015

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  6. CPC / IPC classifications

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

A seal is brought into contact with a filter media, a filter pump is operated to start filtration, and a signal from a pressure sensor is received. When a predetermined value is exceeded by the signal from the pressure sensor, the filter pump is stopped, the seal is separated from the filter media, and take-up of one section of the filter by a filter collection roll is started. In finishing filter supply from a filter supply roll, drive of a motor is stopped, and an alarm signal is transmitted. If the supply is not to be finished, one section of the filter is taken up by the filter collection roll, and the next stage of filtration is entered.

First claim

Opening claim text (preview).

The invention claimed is: 1. A working fluid filtering device for an electrical discharge machine, which includes a working tank comprising therein an electric discharge machining unit in which a workpiece is electrical-discharge-machined by an electrode, a contaminated fluid tank in which a working fluid from the working tank is collected and pooled, and a filter tank formed with an opening at a bottom portion thereof, wherein a filter is brought into contact with the bottom porti…

Assignees

Inventors

Classifications

  • B23H1/10Primary

    Operations & Transport · mapped topic

  • Operations & Transport · mapped topic

  • B01D33/463Primary

    Operations & Transport · mapped topic

  • Operations & Transport · mapped topic

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Frequently asked questions

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What does patent US8932459B2 cover?
A seal is brought into contact with a filter media, a filter pump is operated to start filtration, and a signal from a pressure sensor is received. When a predetermined value is exceeded by the signal from the pressure sensor, the filter pump is stopped, the seal is separated from the filter media, and take-up of one section of the filter by a filter collection roll is started. In finishing fil…
Who is the assignee on this patent?
Kasai Hirotsugu, Fanuc Corp
What technology area does this patent fall under?
Primary CPC classification B23H1/10. Mapped technology areas include Operations & Transport.
When was this patent published?
Publication date Tue Jan 13 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).