Patents by Inventor Robert Tumberlinson

Robert Tumberlinson 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).

  • Method of making an armature
    Patent number: 8171616
    Abstract: An armature for an electric motor has a lamination stack on a shaft with a commutator mounted on one end of the shaft. Magnet wires wound in slots in the lamination stack, the commutator and armature shaft are at least partially encapsulated in thermoset. The commutator has a commutator ring divided into a plurality of segments with slots between the segments that are filled with a second plastic when the commutator is made by molding a core of the second plastic, such as phenolic, in the commutator ring before the commutator ring is mounted on the armature shaft. Prior to molding the thermoset, the commutator ring is sealed. The seal prevents the thermoset from flowing into the slots between the commutator ring segments or over the commutator ring.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: May 8, 2012
    Inventors: David J. Smith, John C. Stone, Robert Tumberlinson, Earl M. Ortt
  • METHOD OF MAKING AN ARMATURE
    Publication number: 20110126399
    Abstract: An armature for an electric motor has a lamination stack on a shaft with a commutator mounted on one end of the shaft. Magnet wires wound in slots in the lamination stack, the commutator and armature shaft are at least partially encapsulated in thermoset. The commutator has a commutator ring divided into a plurality of segments with slots between the segments that are filled with a second plastic when the commutator is made by molding a core of the second plastic, such as phenolic, in the commutator ring before the commutator ring is mounted on the armature shaft. Prior to molding the thermoset, the commutator ring is sealed. The seal prevents the thermoset from flowing into the slots between the commutator ring segments or over the commutator ring.
    Type: Application
    Filed: February 9, 2011
    Publication date: June 2, 2011
    Inventors: David J. Smith, John C. Stone, Robert Tumberlinson, Earl M. Ortt
  • Method of making an armature
    Patent number: 7908736
    Abstract: An armature for an electric motor has a lamination stack on a shaft with a commutator mounted on one end of the shaft. Magnet wires wound in slots in the lamination stack, the commutator and armature shaft are at least partially encapsulated in thermoset. The commutator has a commutator ring divided into a plurality of segments with slots between the segments that are filled with a second plastic when the commutator is made by molding a core of the second plastic, such as phenolic, in the commutator ring before the commutator ring is mounted on the armature shaft. Prior to molding the thermoset, the commutator ring is sealed. The seal prevents the thermoset from flowing into the slots between the commutator ring segments or over the commutator ring.
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: March 22, 2011
    Assignee: Black & Decker Inc.
    Inventors: David J. Smith, John C. Stone, Robert Tumberlinson, Earl M. Ortt
  • Method of making an armature
    Publication number: 20090126184
    Abstract: An armature for an electric motor has a lamination stack on a shaft with a commutator mounted on one end of the shaft. Magnet wires wound in slots in the lamination stack, the commutator and armature shaft are at least partially encapsulated in thermoset. The commutator has a commutator ring divided into a plurality of segments with slots between the segments that are filled with a second plastic when the commutator is made by molding a core of the second plastic, such as phenolic, in the commutator ring before the commutator ring is mounted on the armature shaft. Prior to molding the thermoset, the commutator ring is sealed. The seal prevents the thermoset from flowing into the slots between the commutator ring segments or over the commutator ring.
    Type: Application
    Filed: November 21, 2007
    Publication date: May 21, 2009
    Applicant: Black & Decker Inc.
    Inventors: David J. Smith, John C. Stone, Robert Tumberlinson, Earl M. Ortt