Patent ID: 7201385
Filing Date: 2007-04-10
Classification: B62B

Abstract:
1. A cart assembly comprising a housing and a wheel assembly mounted in the housing, said wheel assembly comprising a pair of elongated shafts rotatably supported in said housing and a swivel wheel mounted at one end of said shafts and a fixed wheel mounted at the opposite end of said shafts, releasable locking means for selectively positioning said wheel assembly between operative and stored limit positions, said releasable locking means comprising a bearing mounted in said housing circumscribing each of said shafts and a lever pivotally mounted on said bearing to normally bias the lever to engage in circumferentially spaced locking slots in a collar mounted on each of said shafts whereby the lever is biased to engage in one of the slots when the wheel assembly is in an extended limit position and engages in another of said slots when the wheel assembly is in a retracted storage limit position nested in the housing, a handle assembly and means for selectively positioning the handle between an outer operative limit position and an inner stored limit position inside the housing.