1results about How to "Provide durability" patented technology

An apparatus for attachment to the muzzle of a projectile launcher. The apparatus includes a hollow main housing having a plurality of arms extending from a proximal end portion to a distal end portion. A plurality of plates are configured to extend between the plurality of arms of the main housing. Each plate includes: a first opening extending through the thickness of the plate; and a second opening extending across the width of the plate. A roller is disposed within the first opening, and a pin is disposed within the second opening, wherein each pin is inserted through a central opening of a corresponding roller. In an exemplary embodiment, the separate plates and arms are combined into an integral structure having sections for receiving the roller and the pin, and a cover plate or housing is disposed above the integral structure.