Abstract: A user status notification system and method indicate to non-users proximate the fitness equipment unit status information pertaining to the user while the user is using the fitness equipment unit.

Abstract: High fluence charged-particle beams are generated in a vacuum or near vacuum environment. To use these beams in an atmospheric pressure environment, they must pass through some form of transmission window between the two environments. To date, thin single metal foils have been used for these transmission windows. The total practical fluence of such transmitted beams is limited by the ability of the window to dissipate the excess heat deposited in it by the transiting beam. Existing windows have relied only on simple radial heat conduction through the thin foil, radiative cooling from the foil faces, and/or flowing cooling fluids on the high-pressure face of the foil. The present invention, however, proposes to enclose one or more channels within a double foil window and to flow a cooling fluid through such channel(s). The window cooling rate is thus significantly improved over air convection because of fully-developed turbulent flow and a higher cooling mass transport through such channels(s).

Abstract: A system which integrates "intelligent" electronic feedback into the structure of vacuum electronic devices whose subcomponents are electronically and/or electro-mechanically adaptive. By "vacuum electronic device," is meant any source of microwave (or millimeter-wave) power generation which is driven by electron beams. Such a device is divided into the following main subsections: an electron emitter, an electron beam shaping & acceleration region, an rf signal input coupler (for amplifiers), an electron-beam drift region, at least one rf/beam interaction region where beam energy is converted to an rf signal, a beam-dump region, and the rf signal output coupler. Some of those subsections are instrumented with electronic sensors. The data collected by those sensors will feed into an "on-board" microcomputer (logic unit subsection 8) which will compare it to "ideal" set of values for those parameters.

Abstract: A seed dispensing device comprising a housing in which is rotatably mounted a wheel member having a plurality of spokes each carrying a seed cup. The cups pick up seeds from a reservoir on rotation of the wheel member and under the combined action of centrifugal and gravitational forces discharge the seeds to an outlet chute. Opposed brushes are provided in the housing between which the cups pass to sweep excess seeds from the cups and to aid retention of a single seed in each cup to the discharge point. A rotatable cleaning brush element having tangential bristles is mounted in the housing to clean cups prior to the cups entering the mass of seeds in the reservoir. Further brushes and excess seed catching gutters may be provided to assist the reliability of solely a single seed being discharged at predetermined intervals. A power-operated ejector may be arranged to discharge foreign matter or broken seeds and so on from the reservoir.