Patents by Inventor Roger G. Satterfield

Roger G. Satterfield 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).

  • Power tool including hybrid electric motor design
    Patent number: 8508084
    Abstract: An electric motor for use with a power tool includes a motor housing having a first end and an open second end, a first bearing coupled to the first end of the motor housing, a plurality of magnets coupled to the motor housing, and an armature having a first end and a second end. The first end of the armature is rotatably supported by the first bearing. The second end of the armature protrudes from the open second end of the motor housing without being supported by the open second end of the motor housing. The electric motor also includes a second bearing coupled to the second end of the armature. The motor housing is supportable by a first portion of the power tool housing. The second bearing is supportable by a second portion of the power tool housing.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: August 13, 2013
    Assignee: Techtronic Power Tools Technology Limited
    Inventors: Roger G. Satterfield, Stephen C. Hembroff
  • POWER TOOL INCLUDING HYBRID ELECTRIC MOTOR DESIGN
    Publication number: 20090322166
    Abstract: An electric motor for use with a power tool includes a motor housing having a first end and an open second end, a first bearing coupled to the first end of the motor housing, a plurality of magnets coupled to the motor housing, and an armature having a first end and a second end. The first end of the armature is rotatably supported by the first bearing. The second end of the armature protrudes from the open second end of the motor housing without being supported by the open second end of the motor housing. The electric motor also includes a second bearing coupled to the second end of the armature. The motor housing is supportable by a first portion of the power tool housing. The second bearing is supportable by a second portion of the power tool housing.
    Type: Application
    Filed: April 3, 2009
    Publication date: December 31, 2009
    Inventors: Roger G. Satterfield, Stephen C. Hembroff