Patents by Inventor Reiner Pfeiffer

Reiner Pfeiffer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Carbon brush having a centering sleeve
    Patent number: 9728925
    Abstract: The invention relates to a carbon brush (2), having a wear limit indicating function, having a current-carrying stranded wire being arranged in the brush body (4), and having a stranded indicating wire (10), which, at a stranded wire end section (12), is surrounded and fixed by a sleeve (8) having an infeed opening (22), wherein the sleeve (8) is arranged in a recess (6) being formed in the brush body (4). The sleeve (8) is formed as a centering sleeve, the inner diameter (26a, 26b) of which at the infeed opening (22) nearly corresponds to the outer diameter (24) and features a tapering (30) that is conical in the infeed direction.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: August 8, 2017
    Assignee: SCHUNK KOHLENSTOFFTECHNIK GMBH
    Inventors: Klaus-Georg Tontsch, Reiner Pfeiffer
  • CARBON BRUSH HAVING A CENTERING SLEEVE
    Publication number: 20150111397
    Abstract: The invention relates to a carbon brush (2), having a wear limit indicating function, having a current-carrying stranded wire being arranged in the brush body (4), and having a stranded indicating wire (10), which, at a stranded wire end section (12), is surrounded and fixed by a sleeve (8) having an infeed opening (22), wherein the sleeve (8) is arranged in a recess (6) being formed in the brush body (4). The sleeve (8) is formed as a centering sleeve, the inner diameter (26a, 26b) of which at the infeed opening (22) nearly corresponds to the outer diameter (24) and features a tapering (30) that is conical in the infeed direction.
    Type: Application
    Filed: May 31, 2013
    Publication date: April 23, 2015
    Inventors: Klaus-Georg Tontsch, Reiner Pfeiffer