Abstract: An isometric force-measuring device is comprised of first and second opposed force-bearing surfaces. An incompressible, nonfluid material is positioned between the first and second surfaces. The material is capable of building up pressure in response to the application of force to the force-bearing surfaces. A pressure transducer is responsive to the pressure stored in the material for producing an output signal representative of the force.

Abstract: A system for measuring an inputting range of motion data to a computer comprises a goniometer for measuring range of motion and for producing a range of motion signal from those measurements. A plurality of switches are carried by the goniometer for producing control signals. An interface device receives the range of motion signal and digitizes that signal to produce range of motion data. The interface device also receives the control signals which are used to control the input of the range of motion data to the computer.

Abstract: A coke oven decarborizing air regulating assembly comprising a manifold pipe extending along each side of a battery of coke ovens for feeding gas to a plurality of separate pipes leading to burners in the ovens, each of which pipes includes an air regulating assembly comprising a cylindrical pipe section with a plurality of holes cooperating with the edge of a relatively slidable cylindrical sleeve having an end plate or "cookie" with a handle for slidably moving the sleeve longitudinally to quickly regulate the amount of air introduced into the oven. The handle also serves as a stop element to prevent abnormal insertion of the sleeve into the pipe -- also it may predetermine the normal opening of the air admitting holes.