Abstract: An adaptor including a lower fitting including a central, axial opening including a pin valve, a lower travel stop, a lower crimp ring seating surface, an upper fitting including a male thread, and a seating radius configured to conform with a curled lip of the aerosol can, an upper travel stop, configured to contact the lower travel stop during assembly, and an upper crimp ring seating surface, and a crimp ring configured to rest between the lower crimp ring seating surface, and the upper crimp ring seating surface, and configured to compressed in the axial direction while simultaneously expanding in the radial direction during installation.

Abstract: A method of adapting a threaded connection to an aerosol can, including providing a lower fitting, an upper fitting including a male thread, and a seating radius configured to conform with a curled lip of the aerosol can, a crimp ring, configured to rest between the lower crimp ring seating surface and the upper crimp ring seating surface, inserting the lower fitting into the crimp ring and the upper fitting, thereby forming an adaptor assembly, inserting the adaptor assembly, lower fitting first, into the aerosol can, the aerosol can comprising an inner surface, pulling the lower fitting through the upper fitting, thereby compressing the crimp ring in the axial direction while simultaneously expanding in the radial direction, thereby making contact with the inner surface and fixedly installing the adaptor assembly in the aerosol can.

Abstract: A modular go-kart assembly includes an acceleration assembly cooperatively working with a braking assembly for powering and stopping the go-kart assembly. The go-kart assembly further includes a central body, a front drive assembly, a rear drive assembly, and a protective cage assembly, each of which are modular for easy construction and disassembly. The go-kart assembly includes a motor having multiple power take off shafts to provide simple connections to an acceleration assembly and a braking assembly. Both the acceleration assembly and the braking assembly are controlled by one control pedal, so as to provide a safety measure for the operator, which is typically a child.