US Patent 11459717 Snow plow extension slide

A snow plow blade assembly comprises a main blade, an extension blade extending laterally from the main blade; a slide member and a flat bar. An interface is present between the main blade and the extension blade, with the slide member and the flat bar installed at the interface. The slide member slidably cooperates with the flat bar to control or to minimize a gap between the main blade and the extension blade at the interface.