Biro, Aspirin, Hoover and Band-Aid are just a few examples of what is called genericisations, the linguistic and legal process where a brand name becomes the common, everyday term for an entire category of products.
One could argue that 'Cube' has very nearly become one in the golf push cart space. So many brands, most notably Motocaddy, utilise this name and this folding mechanism in the best push carts that it has become synonymous with the category as a whole.
