Patent ID: 6725956
Filing Date: 2004-04-27
Classification: A61G

Abstract:
A fifth wheel support assembly, comprising:a frame having plural floor engaging wheels mounted thereon; a housing configured for movement relative to said frame toward and away from the floor; a resilient mechanism oriented between said frame and said housing and configured to continually urge said housing toward the floor; a wheel mounted for rotation on an axle secured to said housing, a peripheral surface of said wheel normally engaging the floor in response to said spring mechanism urging said housing toward the floor; a drive motor mechanism fastened to at least one of said frame and said housing and having a driven member that is retractable and extendable relative to said drive motor mechanism, said driven member being fastened to the other of said at least one of said housing and said frame by a fastening mechanism, said fastening mechanism including a pin having an axis that extends parallel to an axis of said axle, said driven member having an elongate slot slidably receiving therein said pin, said pin and said slot being configured to cause said pin to engage one end of said elongate slot in response to said driven member being retracted to effect a movement of said housing away from the floor against the urging of said spring mechanism and, consequently, a corresponding movement of said peripheral surface of said wheel away from the floor.