Patents by Inventor Philip Michael Parr-Burman

Philip Michael Parr-Burman 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).

  • Lens mounting for optical instrument
    Patent number: 5731918
    Abstract: The invention relates to a lens mounting suitable for use in a high performance optical instrument. The mounting (10) comprises a body or housing, a linear guide (16; 18; 36; 46; 64) mounted on the body, a lens carriage (14; 34; 44; 62) moveable along the linear guide, and a linear drive, which may be in the form of a ball-screw drive and comprising a ball-screw (20; 80) extending substantially parallel to the linear guide and a ball-screw follower (22; 68) linked to the lens carriage such that rotation of the ball-screw moves the carriage axially along the guide. One or more elements of the ball-screw drive are mounted relative to the linear guide to permit a degree of relative movement therebetween to accomodate misalignment between the linear guide and ball-screw.
    Type: Grant
    Filed: September 12, 1996
    Date of Patent: March 24, 1998
    Assignee: Pilkington P.E. Limited
    Inventors: Philip Michael Parr-Burman, Graham Evans, Allan Gardam