Brush device, electric machine

US9444209B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9444209-B2
Application numberUS-201313955820-A
CountryUS
Kind codeB2
Filing dateJul 31, 2013
Priority dateAug 2, 2012
Publication dateSep 13, 2016
Grant dateSep 13, 2016

How to read this patent

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  1. Title

    What the patent document calls the invention.

  2. Abstract

    A short plain-language summary of the technical disclosure.

  3. Assignees and inventors

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  4. Key dates

    Filing, priority, publication, and grant dates set the timeline.

  5. First independent claim

    The legal scope of protection — read this for what is actually claimed.

  6. CPC / IPC classifications

    Technology tags used to group this patent with similar filings.

  7. Citations and related patents

    Prior art links and similar publications in this corpus.

Abstract

Official abstract text for this publication.

The invention relates to a brush device, in particular for an electric machine, comprising at least one brush holder which has at least two brush boxes for receiving in each case one brush, wherein the brushes are mounted in a displaceable manner in the respective brush box and wherein a helical spring can be braced/is pretensioned in each case between one of the brushes and a stop in the respective brush box, and comprising at least two elastically deformable electrical conductors which are each connected with an end thereof to one of the brushes.

First claim

Opening claim text (preview).

What is claimed is: 1. A brush device, comprising at least one brush holder which has at least two brush boxes for receiving in each case one brush, wherein the brushes are mounted in a displaceable manner in the respective brush boxes and wherein a helical spring is pretensioned in each case between one of the brushes and a stop in the respective brush box, and comprising at least two elastically deformable electrical conductors, which are each connected with an end thereof to one of the brushes, wherein the respective stop is configured at least in regions annularly with a through opening and the respective electrical conductor is routed from the respective brush through the respective helical spring and the through opening of the stop supporting said respective helical spring to a connection at an end of the respective brush box, wherein the respective brush and the respective helical spring in each case extend along a common axis, and wherein a lateral deflection space for the electrical conductor is disposed in each case along the common axis, such that the helical spring is disposed between the lateral deflection space and the brush along the common axis, and wherein the entire respective lateral deflection space is disposed within the brush holder along the common axis between the respective connection and the respective stop, wherein a cross section of the deflection spaces is configured L-shaped in each case.

Assignees

Inventors

Classifications

  • Connections of cable or wire to brush · CPC title

  • wherein the brush is fixedly mounted in the holder · CPC title

  • cartridge type · CPC title

  • H01R39/383Primary

    characterised by the electrical connection to the brush holder · CPC title

  • Brush holders · CPC title

Patent family

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External sources

Frequently asked questions

Answers are generated from the same data shown on this page.

What does patent US9444209B2 cover?
The invention relates to a brush device, in particular for an electric machine, comprising at least one brush holder which has at least two brush boxes for receiving in each case one brush, wherein the brushes are mounted in a displaceable manner in the respective brush box and wherein a helical spring can be braced/is pretensioned in each case between one of the brushes and a stop in the respe…
Who is the assignee on this patent?
Bosch Gmbh Robert
What technology area does this patent fall under?
Primary CPC classification H01R39/383. Mapped technology areas include Electricity.
When was this patent published?
Publication date Tue Sep 13 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).