A chassis of a movable platform is provided, including a chassis body and a wheel assembly, the chassis body is configured to support an actuator of the movable platform, the wheel assembly is movably connected to the chassis body to switch between a first state and a second state, in the first state, all or part of the wheel assembly is located in an outer area of a side surface of the chassis body, and in the second state, the wheel assembly is positioned to avoid the actuator, so as to allow the actuator to move to the outer area of the side surface of the chassis body to perform a corresponding operation. A movable platform including the chassis is also provided to enhance the operational flexibility of the movable platform and improve the overall operational stability of the platform.

An apparatus for deploying a payload to a hostile target. The payload may be separable from the apparatus or may be internal to the apparatus. The apparatus has two outboard drive wheels flanking a hollow body. A payload delivery mechanism is disposed on a frame inside and concealed by the hollow body. The payload delivery mechanism has a first, retracted position inside the hollow body and extends through a port to a second position to deliver a payload to a hostile target. The payload may be separable from the apparatus or may be internal to the apparatus. If the payload is internal to the apparatus, upon attachment to a hostile target the payload delivery mechanism may retract to be less visually conspicuous.

A system for boarding a wheelchair on a vehicle is provided. The system includes a pair of tracks affixed to an interior of the vehicle, a panel slidably disposed on the pair of tracks, and a scissor lift mechanism having a first end affixed to the panel. The system also includes a platform configured for receiving the wheelchair, the platform affixed to a second end of the scissor lift mechanism, a first actuator configured to move the panel along the pair of tracks, and a second actuator configured to operate the scissor lift mechanism.

A single axle tow dolly is provided herein. The tow dolly contains a frame, a pair of wheels coupled to the frame and a set of hydraulic cylinders which are connected to the wheels. Each of the hydraulic cylinders can be connected to one of the wheels such that its operation functions to lower the frame to a ground level position and subsequently to raise the frame to a position above the ground for easy pulling. The hydraulic cylinders can operate to lower a platform of the dolly to a position which can more readily load a vehicle or cargo thereon. Thereafter, the hydraulic cylinders can raise the platform to an elevated level plane which is above the ground. The dolly can also contain wheel locks for a vehicle to be secured in place for towing. Further the dolly can have any of a pivoting tow section and a ramp for loading vehicles such as motorcycles.