Abstract: The present invention relates to a safety cover for an electrical box mounted device. The safety cover is configured to be mounted between the device and a face plate to prevent access to exposed wires and energized terminals inside the electrical box when the face plate is removed.

Abstract: The present invention relates to a safety cover for an electrical box mounted device. The safety cover is configured to be mounted between the device and a face plate to prevent access to exposed wires and energized terminals inside the electrical box when the face plate is removed.

Abstract: A golf training aid is adapted to be worn by a golfer. When worn, the golf training aid includes a forearm support secured to the leading forearm of the golfer. Rotatively mounted to the forearm support is an arm that extends past the hands of the golfer. Secured by the remote end of the arm is a shaft retainer that receives and holds the golf club shaft while the golf club is gripped and held by the golfer. The arm extending from the forearm support to the shaft retainer permits rotation of the arm about a first axis, but generally prevents or limits movement of the arm except about the first axis. The restrictions to movement imposed by the arm generally prevent the golfer from flipping his hands during the impact portion of the swing. That is, during the impact portion of the swing at least, the back of the leading hand remains generally fixed with respect to the adjacent forearm.

Abstract: An optical assembly and electronic reader circuit cooperate to provide a highly-efficient and low-cost electro-optic barcode reader. The optical assembly includes a shielded housing, a photo detector and optical elements disposed about an un-folded optical path that provide a virtual reading window at one end of the housing whose field of view, which is focused to a point at the photo detector, is shaped to be no wider than constitutive barcode indicia. The electronic reader circuit includes a pulse amplifier and manual-adjustment-free average D.C. offset negative feedback and A.C. information peak detect negative feedback loops that respectively maintain the electrical pulse stream input to the pulse amplifier within the dynamic range thereof and eliminate electrical pulse stream peak noise. A circuit is coupled to a comparator with hysteresis square-up stage to deactivate the comparator in the state of no input signal.

Abstract: An optical assembly and electronic reader circuit cooperate to provide a highly-efficient and low-cost electro-optic barcode reader. The optical assembly includes a shielded housing, a photo detector and optical elements disposed about an un-folded optical path that provide a virtual reading window at one end of the housing whose field of view, which is focused to a point at the photo detector, is shaped to be no wider than constitutive barcode indicia. The electronic reader circuit includes a pulse amplifier and manual-adjustment-free average D.C. offset negative feedback and A.C. information peak detect negative feedback loops that respectively maintain the electrical pulse stream input to the pulse amplifier within the dynamic range thereof and eliminate electrical pulse stream peak noise. A circuit is coupled to a comparator with hysteresis square-up stage to deactivate the comparator in the state of no input signal.

Abstract: An automatic wafer loading and pre-alignment system for integrated circuit wafer-mask Aligners. A belt feed track system is employed to transport wafers from a "send" wafer storage carrier to a wafer pre-alignment station. The wafer is machanically pre-aligned with respect to the wafer chuck of the Aligner by means of a roller arm and flat-finder system. After completion of the pre-alignment process, the Aligner turntable is rotated to carry the pre-aligned wafer and chuck to the home position of the turntable and at the same time position another chuck at the pre-alignment station. If the new chuck at the pre-alignment station contains a wafer, the wafer is transported from the chuck to a "receive" wafer storage carrier by means of a belt return track system. The feed and return wafer belt track systems have a common portion between the pre-alignment station and the respective "send" and "receive" wafer storage carriers.