Abstract: A safety valve for exposing a measuring probe to a fluid comprising a hollow inner valve body with a valve seat movably positioned within a hollow outer valve body having a cooperating valve element for providing fluid-tight engagement when the valve is closed. The inner valve body partially extends from the outer valve body when the valve is open for passage of the fluid into an inner chamber for exposing the inserted probe to the fluid. The probe is secured to the inner valve body by a threaded cap, the movement of which is translated to the inner valve body in the presence of the probe for moving the inner valve body to the open valve position. The valve is prevented from being opened in the absence of the probe by a spring mounted on the outer valve body engaging a catch on the cap for restricting movement thereof preventing the valve from being opened.

Abstract: A system for determining and controlling the power being transmitted through a rotated shaft from a fuel-consuming engine, which includes a husk assembly associated with the shaft and providing electrical signals proportional to shaft torque, a tachometer for providing electrical signals proportional to shaft rotational speed, electrical circuitry for electronically multiplying the torque signals by the RPM signals to determine shaft horsepower, a dividing network for dividing the shaft horsepower signal into an electrical signal representing the rate of fuel consumption to provide a continuous indication of instantaneous system efficiency, a first control network connected to receive the shaft RPM signals for providing both variable and on-off feedback signals for controlling the speed of the engine and a second control network connected to receive the shaft torque signals for providing both variable and on-off torque control signals for feedback control of the engine to enable the direct supervision of engi

Abstract: A system for continuously providing direct readouts of horsepower and efficiency of a rotating shaft, which includes a husk assembly associated with the shaft and providing electrical signals proportional to shaft torque, a tachometer for providing electrical signals proportional to shaft rotational speed, electrical circuitry for electronically multiplying the torque signals by the RPM signals to determine shaft horsepower, and a dividing network for dividing the shaft horsepower signal into an electrical signal representing the rate of fuel consumption to provide a continuous indication of instantaneous system efficiency.

Abstract: A system for continuously providing direct readouts of horsepower and efficiency of a rotating shaft, which includes a husk assembly associated with the shaft and providing electrical signals proportional to shaft torque, a tachometer for providing electrical signals proportional to shaft rotational speed, electrical circuitry for electronically multiplying the torque signals by the RPM signals to determine shaft horsepower, and a dividing network for dividing the shaft horsepower signal into an electrical signal representing the rate of fuel consumption to provide a continuous indication of instantaneous system efficiency.