US Patent 11833577 Mushrooming expandable fastener installation tool and methods

Methods, systems and tools for securing to a panel an expandable fastener having a threaded component and a mushrooming component, the tool including a sleeve having a cylindrical body with a hollow inside portion and an internal spline configured to match a splined shoulder of the mushrooming component, a drive shaft having a driving portion configured to engage and rotate the threaded component, the driving portion positioned within the hollow portion of the sleeve, and a driven portion configured to be driven by an arbor, the arbor having a first shaft portion configured to engage with the driven portion and drive the drive shaft, and a second shaft portion configured to connect to a drill or nut driver to drive the drive shaft to turn the threaded component relative to the mushrooming component and collapse the mushrooming component.