Abstract: A numismatic that can include embossed and debossed regions that are configured to allow the stable stacking of a series of numismatics, for the purpose of reducing plastic waste by providing storage modalities that preclude the need for plastic sleeve holders. The stackable numismatic may also include embossed and debossed formations that are coaxial, decorations, and/or script. Such stackable numismatics may be displayed within a balanced magnetic field of a decorative device.

Abstract: A stackable form of a numismatic that includes a visible, centrally embedded magnet for the purpose of reducing plastic waste by providing storage modalities for such that preclude the need for plastic sleeve holders. The stackable magnetic numismatic may also include embossed and debossed formations, decorations, and/or script. Such stackable magnetic numismatics may be displayed within a balanced magnetic field of a decorative device.

Abstract: A stackable form of a numismatic that includes a visible, centrally embedded magnet for the purpose of reducing plastic waste by providing storage modalities for such that preclude the need for plastic sleeve holders. The stackable magnetic numismatic may also include embossed and debossed formations, decorations, and/or script. Such stackable magnetic numismatics may be displayed within a balanced magnetic field of a decorative device.

Abstract: A damping system for a heave compensator for an off-shore oil rig includes a hydraulic cylinder having a piston and a housing. The hydraulic cylinder is configured for accepting a hydraulic fluid. There is a flow passage for restricting the flow of the hydraulic fluid during movement of the piston in the housing. The hydraulic fluid is a magnetic fluid and the damping system includes a magnetic fluid management system for controlling a magnetic field at the flow passage. A heave compensator including such a damping system, and a method for controlling the damping of a heave compensator are also disclosed, the method including subjecting a magnetic fluid to a magnetic field at a flow passage for restricting the flow of the magnetic fluid.

Abstract: A sprayer boom for a mobile landscape spraying apparatus having a wheeled chassis for movement of the spraying apparatus relative to a ground surface includes a sprayer boom assembly. The sprayer boom assembly includes an outer boom section that supports a spray nozzle for spraying a material onto the ground surface. A motor is configured to move the outer boom section relative to the chassis between an extended, sprayer mode position and a retracted, storage position. The outer boom section is capable of breakaway motion in the sprayer mode position in response to encountering an obstruction.