Abstract: A portable power unit comprises a battery pack interface configured to receive a battery pack and a power tool interface that is configured to electrically connect to an external power tool. The portable power unit further comprises a tool control circuit configured to generate a tool control signal. The tool control signal is operable to control power provided to the external power tool. The portable power unit further comprises a bypass circuit configured to provide power from the battery pack to the external power tool. The portable power unit further comprises a controller configured to determine whether the external power tool is operable to be controlled by the tool control circuit and to control the bypass circuit to provide passthrough power to the power tool interface when the external power tool is not operable to be controlled by the tool control circuit.

Abstract: A concrete vibrator system comprises a vibrating head including a shaft. The shaft has a center of mass that is radially offset from a rotational axis of the shaft. The vibrating head also includes an onboard electric motor configured to provide torque to the shaft, causing the shaft to rotate. The concrete vibrator system further comprises a portable power unit including a battery pack configured to provide electrical current to the motor. A cable extends between the portable power unit and the vibrating head. The cable is configured to transmit electrical current from the battery pack to the motor and a motor control signal from the portable power unit to the motor.

Abstract: Systems, methods, and media for pre-processing and post-processing in additive manufacturing are provided. A method includes receiving object geometry data. The method may further include generating a sectional snapshot and a bounding box. The method may also include performing a boundary tracing operation on the sectional snapshots. Further still, the method may include executing a contour mapping algorithm. The method may additionally include outputting slice contour points with respect to the object to be fabricated.

Abstract: Systems, methods, and media for pre-processing and post-processing in additive manufacturing are provided. A method includes receiving object geometry data. The method may further include generating a sectional snapshot and a bounding box. The method may also include performing a boundary tracing operation on the sectional snapshots. Further still, the method may include executing a contour mapping algorithm. The method may additionally include outputting slice contour points with respect to the object to be fabricated.

Abstract: A child's seat assembly securable, preferably within the seat back of the backseat of a vehicle. This invention includes a molded seal and frame which is interconnectable between the vehicle's seat back support structure. The molded seat is releasably positionable, generally within the perimeter of the frame, which is preferably tubular. The frame fits either between two seat back portions or at one end of a seat back portion when installed as original vehicle equipment. When installed as an after-market accessory, the vehicle's existing seat back must be modified to accommodate installation of the frame to the support structure of the vehicle. This assembly includes two lateral head support panels, a torso containment panel, and, preferably, a foot support panel. The two head support panels are generally vertically hinged, the hinges mounted along either upper portion of the frame, while the foot support is hinged along a lower transverse cross member of the frame.