Patents by Inventor Lorvel J. Shields

Lorvel J. Shields 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).

  • Patent number: 6324021
    Abstract: A focusing system for optical devices in which quick, precise focusing is enabled through the use of a spindle-cord member combination system designed to prevent backlash. The system includes a spindle engageable by an operator which is rotatable around a spindle axle, and a lens mount. The spindle axle can be attached to a support member. A cord member can adjustably engage the spindle, and be attached at each end of the lens mount. The lens mount can slide along the support member. In addition, an eye piece assembly can be attached to the sled and moveable with the lens mount, as the lens mount is adjusted by rotation of the spindle.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: November 27, 2001
    Inventor: Lorvel J. Shields
  • Patent number: D412023
    Type: Grant
    Filed: February 5, 1998
    Date of Patent: July 13, 1999
    Inventor: Lorvel J. Shields