Abstract: A cart includes a fixed platform having a first edge and a first top surface for carrying cargos, a foldable platform having a second top surface for carrying cargos and a second edge pivotally attached to the first edge, the foldable platform pivoting between a horizontal position and an upright position, the first and second top surface being in the same plane when the foldable platform being at the horizontal position, a support structure extended from the fixed platform to beneath the foldable platform, and a support rod pivotally attached to a bottom surface of the foldable platform and pivoting between a first and second angle to the foldable platform, the second angle being different from the first angle, when at the second angle, the support rod, the support structure, the fixed platform and the foldable platform forming a triangle holding the foldable platform at the upright position.

Abstract: A modular system for muffler production and assembly allows various muffler designs to be produced from a common set of components. In particular, modular stamped muffler housing components, including two endcap designs and an intermediate body component design, can be assembled in various ways to produce muffler shells of varying length and configuration, while also ensuring high performance of the finished product. Additional components, such as crossover tubes, baffles and manifold pipes, may be integrated into a particular muffler design upon final assembly.