Patents by Inventor Roy Horton

Roy Horton 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).

  • Fluid pressure actuators indicator
    Patent number: 4198921
    Abstract: A fluid pressure actuator such as an hydraulic top link has an external indicator device for marking the position of the piston within the actuator cylinder. The indicator has a collar which clamps on to the piston rod and a finger which extends longitudinally along the outside of the actuator cylinder to provide a direct reading of the piston position. An indirect indication may be provided by linking the longitudinally extending finger to a spring loaded tape indicator, or to an indicator arm which moves angularly across a scale.
    Type: Grant
    Filed: November 1, 1978
    Date of Patent: April 22, 1980
    Assignee: Sparex Ltd. of Exeter Airport
    Inventor: Roy Horton