Abstract: Mechanisms and methods for providing gravity compensation to an arm or an arm holding a tool, that allows that arm to seem weightless. The mechanisms and methods include pantograph members that mimic the kinematics of the arm and also compensate for gravity making the arm, the arm holding a tool, or a tool seem weightless.

Abstract: The present invention is directed to a wheelchair lift device, more particularly, to a folding wheelchair lift device that is independently operable by a wheelchair user without the wheelchair user exiting their chair. The wheelchair lift apparatus, in various embodiments, may include a linkage frame having a nesting linkage geometry; linkage frame components with alignment and locking features; an extension handle having alignment and locking features; and an adjustable telescopic axle-rest assembly having alignment and locking features.

Abstract: An apparatus and system for launching and/or capturing an unmanned aerial vehicle (UAV). The apparatus includes a moving substrate having an electromagnetic end effector and a UAV with a metallic strike plate to be attracted to the end effector when the electromagnet is activated. The system includes a movable robotic arm having a free end and a secured end; an electromagnetic end effector connected proximate to the free end of the robotic arm; a UAV with a metallic strike to be attracted and held to the electromagnetic end effector when the electromagnetic end effector is active; trajectory software configured to control a location of the free end of the robotic arm; and a control module for receiving input data, analyzing the data and using the trajectory software to control the location of and activate or deactivate the electromagnetic end effector. Also described are methods for launching and capturing the UAV.

Abstract: The present invention is directed to a wheelchair lift device, more particularly, to a folding wheelchair lift device that is independently operable by a wheelchair user without the wheelchair user exiting their chair. The wheelchair lift apparatus, in various embodiments, may include a linkage frame having a nesting linkage geometry; linkage frame components with alignment and locking features; an extension handle having alignment and locking features; and an adjustable telescopic axle-rest assembly having alignment and locking features.

Abstract: An apparatus and system for launching and/or capturing an unmanned aerial vehicle (UAV). The apparatus includes a moving substrate having an electromagnetic end effector and a UAV with a metallic strike plate to be attracted to the end effector when the electromagnet is activated. The system includes a movable robotic arm having a free end and a secured end; an electromagnetic end effector connected proximate to the free end of the robotic arm; a UAV with a metallic strike to be attracted and held to the electromagnetic end effector when the electromagnetic end effector is active; trajectory software configured to control a location of the free end of the robotic arm; and a control module for receiving input data, analyzing the data and using the trajectory software to control the location of and activate or deactivate the electromagnetic end effector. Also described are methods for launching and capturing the UAV.