Patents by Inventor Sandra Loh

Sandra Loh 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).

  • Rotation sensing
    Patent number: 7113063
    Abstract: Methods and apparatus implementing and using techniques for sensing rotations of a rotating device, including using at least one switch located in a first plane and a magnet rotating in a plane substantially parallel to the first plane about a rotation axis, the magnet having a north-south axis tilted at an oblique angle to the first plane. The magnet causes the at least one switch to open and close as the magnet rotates about the rotation axis.
    Type: Grant
    Filed: September 7, 2004
    Date of Patent: September 26, 2006
    Assignee: Cellnet Innovations, Inc.
    Inventors: Carl Romanik, Bruce Edwards, Sandra Loh
  • Rotation sensing
    Publication number: 20050068133
    Abstract: Methods and apparatus implementing and using techniques for sensing rotations of a rotating device, including using at least one switch located in a first plane and a magnet rotating in a plane substantially parallel to the first plane about a rotation axis, the magnet having a north-south axis tilted at an oblique angle to the first plane. The magnet causes the at least one switch to open and close as the magnet rotates about the rotation axis.
    Type: Application
    Filed: September 7, 2004
    Publication date: March 31, 2005
    Inventors: Carl Romanik, Bruce Edwards, Sandra Loh