Patents by Inventor Virgilio Crestani

Virgilio Crestani 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).

  • Brush holder assembly for an electric motor
    Patent number: 7173359
    Abstract: A universal motor has a brush cage assembly in which a U-shaped clip 34 is located about a wall of a through hole 28 of a bearing bracket 24 for receiving a brush cage 30. The clip 34 has an outer limb 42 with inwardly and rearwardly directed barbs 44 to grip an outer surface of the wall to prevent removal of the clip 34 and an inner limb 36 with outwardly and forwardly directed barbs 42 which resiliently deform as the cage 30 is inserted to snare the cage 30 should it move in the opposite direction. The clip 34 thus prevents withdrawal of the brush cage 30 and provides a lateral spring force against the cage 30 to reduce cage lateral position tolerance and movement.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: February 6, 2007
    Assignee: Johnson Electric S.A.
    Inventors: Johnny Ho Yin Kong, Virgilio Crestani
  • Brush holder assembly for an electric motor
    Publication number: 20050121994
    Abstract: A universal motor has a brush cage assembly in which a U-shaped clip 34 is located about a wall of a through hole 28 of a bearing bracket 24 for receiving a brush cage 30. The clip 34 has an outer limb 42 with inwardly and rearwardly directed barbs 44 to grip an outer surface of the wall to prevent removal of the clip 34 and an inner limb 36 with outwardly and forwardly directed barbs 42 which resiliently deform as the cage 30 is inserted to snare the cage 30 should it move in the opposite direction. The clip 34 thus prevents withdrawal of the brush cage 30 and provides a lateral spring force against the cage 30 to reduce cage lateral position tolerance and movement.
    Type: Application
    Filed: December 3, 2004
    Publication date: June 9, 2005
    Applicant: Johnson Electric S.A.
    Inventors: Johnny Kong, Virgilio Crestani
  • Motor-driven fan, particularly for a motor vehicle heat exchanger
    Patent number: 6384494
    Abstract: A motor-driven fan includes an electric motor including a rotor and a stator in which the rotor includes an essentially cup-shaped cap which extends at least partly around the stator and has a plurality of lateral exit openings adjacent the bottom wall, and an impeller or fan including a hollow hub from which extends a plurality of main outer fan blades. This hub has a front wall fixed to the back wall of the cap of the rotor and a lateral skirt which surrounds the lateral wall of the cap in a radially spaced relationship. The hub is further provided with inner ventilation blades acting in operation to generate a cooling air stream which passes through the motor.
    Type: Grant
    Filed: May 5, 2000
    Date of Patent: May 7, 2002
    Assignee: Gate S.p.A.
    Inventors: Maurizio Avidano, Virgilio Crestani