Abstract: A force generator includes a hub, which is rotatable about an axis thereof, an elongate member coupled to the hub such that the elongate member is rotatable with the hub and extends radially outwardly away from the hub and the axis along a radial dimension defined with respect to the axis and a mass, which is movably disposed along the elongate member and is adjustable to multiple radial mass positions relative to the hub.

Abstract: A method of operating a vibration control system (VCS) using a single actuator which operates to attenuate a system frequency of a system is provided. The method includes determining whether current vibrations at a non-system frequency exceed a predefined level, determining a system response to compensate for the current vibrations exceeding the predefined level and adjusting the force response of the single actuator to respond to a system frequency and the non-system frequency according to the determined system response toward compensating for the current vibrations.

Abstract: A device for indicating whether a container having a cap has been opened. The device includes a switch or pressure transducer for detecting the engagement of the cap to the container and disengagement therefrom. A display, which is visible through the top of the cap, provides a plurality of messages which are in an irreversible and nonrepeatable sequence for indicating whether or not the cap has ever been removed from the container.

Abstract: The present invention relates to a means for extending an electrical circuit through a modular assembly comprising a plurality of threaded pipe modules which utilizes electrical contact strips. In particular, the circuit is extended through a system of interengagable outer pipe modules, adapted for use with one another, and for use with any of a plurality of inner pipe modules. Each of the modules is preferably a length of pipe having at least on its interior electrically insulating material and electrically conductive strips in a fixed spatial relationship. A precisely threaded coupling is formed on at least one end of the pipe having a single starting point for engagement with another precisely threaded coupling on another outer module.