Today in 2011, US Patent 20110206487 A1 was issued, an invention of Terry George Morgan, for his “Keg Handling Equipment.” Here’s the Abstract:

A keg conveying trolley has a pair of wheels, a central post and a slide which carries a hook for grasping the keg rim. The slide is lockable at different keg heights. A foot plate assists in tipping the trolley to an inclined position for wheeling the keg from one place to another. The keg stacking version has a winch worked by hand or a cordless drill. The keg is supported by a rise and fall carriage. The carriage can be modified to be multitask. Variants can lift gas bottles on their side, truck tires for placing on wheel studs and odd shaped loads.