Patents Examined by Nguyan N Hanh
  • Audible brush wear indicator for rotating electric machines
    Patent number: 7936105
    Abstract: An electric machine incorporates a brush assembly that provides an audible warning when the brush in the brush assembly approaches the end of its useable length. The brush incorporates a device incorporated into the brush or a brush design which cooperates with the brush holder to generate the noise. The noise provides a warning to the user of the electric machine that the useable length of the brush material is near.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: May 3, 2011
    Assignees: DENSO International America, Inc., Denso Corporation
    Inventors: Robert Martin, Seiji Kondo