Patents by Inventor Thomas J Stickland

Thomas J Stickland 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).

  • Scale reading apparatus
    Patent number: 6481115
    Abstract: A rotary ring 3 for use in scale reading apparatus has a scale on its outer circumference and is mounted on a rotary shaft 6. To reduce error caused by the rotary ring 3 not sitting concentrically on the rotary shaft 6, the inner circumference 5 of the rotary ring 3 and the outer circumference of the shaft 6 are both tapered. To compensate for eccentricity of the shaft, mounting screws 8 are provided in holes on the rotary ring to adjust the position of the rotary ring until it is concentric with the axis of rotation of the shaft.
    Type: Grant
    Filed: October 11, 2000
    Date of Patent: November 19, 2002
    Assignee: Renishaw, PLC
    Inventors: James R Henshaw, Thomas J Stickland