The designers were given a simple concept: "cartridge-based kitty litter". They were free to brainstorm on any method using sketches, rigs, and mechanical prototypes. The final design uses crystal litter which absorbs odor, but does not clump. An automatic mechanism rakes the solid waste to the front and tucks it under a flap. This revolutionary system allows the box to go unattended for up to a month.
Devlin pioneered the tuck-under-a-flap approach, and designed the mechanisms that move the rake and lift the flap. Devlin also designed for manufacturing and performed the 3D modeling.
Invention, Prototype and Testing, Mechanical Engineering, General Design, Manufacturing