Abstract: The present disclosure relates to cell geometries for use in panel designs which may allow for an increased amount of energy absorption under lateral loading, as well as axial loading. The cell geometry that may withstand more energy from different angles as compared to standard honeycomb geometry. This cell geometry may be employed as a core of repeating cells to provide an increased amount of energy absorption under lateral loading in addition to energy absorption under axial loading. The cell geometry may be composed of a portion having a squared cross-section, but with internal diagonal walls, which are neither fully parallel nor perpendicular to the cell axis. This configuration is believed to possibly increase stiffness and energy absorption of a resulting core in the lateral direction.

Abstract: The present invention provides a hydraulic powered wheelchair pivotable from a sitting position to a standing position with minimal user effort. The pivoting frame assembly includes a rigid horizontally arranged wheel support structure, a single vertical extending member secured to the wheel support structure and centered between the wheels, and a pivoting frame linkage assembly pivotably connected at the upper end of the vertically extending member. A hydraulic jack rests on the wheel support structurs, and is connected at the other end to the seat support members of the pivoting assembly. A user of the wheelchair pivots a lever assembly to raise the jack, and thus raise the chair to the standing position. An electric buzzer system is integrated with the wheelchair, and an alarm informs the operator when the chair has reached the standing position.

Abstract: The present invention provides a hydraulic powered wheelchair pivotable from a sitting position to a standing position with minimal user effort. The pivoting frame assembly includes a rigid horizontally arranged wheel support structure, a single vertical extending member secured to the wheel support structure and centered between the wheels, and a pivoting frame linkage assembly pivotably connected at the upper end of the vertically extending member. A hydraulic jack rests on the wheel support structurs, and is connected at the other end to the seat support members of the pivoting assembly. A user of the wheelchair pivots a lever assembly to raise the jack, and thus raise the chair to the standing position. An electric buzzer system is integrated with the wheelchair, and an alarm informs the operator when the chair has reached the standing position.