Patents Assigned to Dollond & Aitschison (Services) Limited
  • Apparatus for polishing curved surfaces
    Patent number: 4232485
    Abstract: In a machine for smoothing and polishing part-spherical surfaces on lenses, a tool and a lens are supported in contact with each other for rotation about respective axes and one of the tool and lens is driven. One of the tool and the lens is rocked about an axis which is perpendicular to its axis of rotation while the axis of the other of the tool and lens is maintained at a fixed acute angle to the plane in which the rocking occurs.
    Type: Grant
    Filed: August 11, 1978
    Date of Patent: November 11, 1980
    Assignee: Dollond & Aitschison (Services) Limited
    Inventor: Stuart Eadon-Allen