Patents Assigned to Sparex Ltd. of Exeter Airport
  • 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