Patents by Inventor James L. Hubbard, III

James L. Hubbard, III 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).

  • Elevator motor brake torque measurement device
    Patent number: 8104586
    Abstract: An elevator machine (20) assembly useful in an elevator system (10) includes a motor frame (26) that supports a motor (24) for selectively rotating a motor shaft (28). A brake (36) selectively applies a braking force to resist rotation of the motor shaft (28). At least one load sensor (46) resists undesirable movement of the brake (36) and provides an indication of a load that results from applying the braking force. A disclosed example includes using a first resistive member (46) to resist movement of the brake (36) relative to the motor frame (26) when the load is below a threshold load and using a second resistive member (60) to resist movement when the load exceeds the threshold load.
    Type: Grant
    Filed: February 25, 2005
    Date of Patent: January 31, 2012
    Assignee: Otis Elevator Company
    Inventors: Boris Traktovenko, Robin Mihekun Miller, James L. Hubbard, III
  • Elevator Motor Brake Torque Measurement Device
    Publication number: 20090120728
    Abstract: An elevator machine (20) assembly useful in an elevator system (10) includes a motor frame (26) that supports a motor (24) for selectively rotating a motor shaft (28). A brake (36) selectively applies a braking force to resist rotation of the motor shaft (28). At least one load sensor (46) resists undesirable movement of the brake (36) and provides an indication of a load that results from applying the braking force. A disclosed example includes using a first resistive member (46) to resist movement of the brake (36) relative to the motor frame (26) when the load is below a threshold load and using a second resistive member (60) to resist movement when the load exceeds the threshold load.
    Type: Application
    Filed: February 25, 2005
    Publication date: May 14, 2009
    Inventors: Boris Traktovenko, Robin Mihekun Miller, James L. Hubbard III