Abstract: A user assistance apparatus and system is disclosed. The apparatus and system may include a base and a platform rotatably positionable about the base. A lift assist chair may be disposed upon the platform, and handrails may be attached to the platform such that the handrails rotate with the platform. The handrails extend from the platform to define an entry, and the handrails are configured to assist a user as the user passes between the entry and the lift assist chair. Fixtures may be disposed in a generally curved arrangement to cooperate with the entry as the platform is rotatably positioned about the base. Related methods of use are also disclosed.

Abstract: A self-aligning row crop spraying device includes a parallelogram-shaped device comprised of a pair of guide support members disposed parallel to each other and a pair of transverse members also parallel to each other. One of the transverse members is fixed to a structure allowing the remainder of the parallelogram-shaped device to move freely about the transverse member. A pair of guide members form a channel for receiving plants. The device allows a spray nozzle to remain aligned with a row of crops throughout the spraying process.

Abstract: An apparatus for controlling the horizontal and vertical orientation of a boom assembly. An elongated frame assembly adapted to be mounted to a vehicle has a cam plate mounted to and moveable therealong. Hydraulic drive means controls the movement of the cam plate between fully extended, intermediate, and fully retracted positions. A hinge plate assembly is rotatably mounted to the frame assembly and an elongated boom, such as an agricultural spray boom, is pivotably mounted to the hinge plate so that the boom is vertically adjustable relative to the ground.