Patent ID: 7997591
Filing Date: 2011-08-16
Classification: B62B

Abstract:
1. A chassis with retractable wheels, comprising: a) a housing defining a hollow interior and having a lower portion having a pair of wheel openings formed therethrough; b) a chassis sled slidably disposed within the housing; c) a pair of lever arms, each said lever arm being disposed in the lower portion of the housing, each of said lever arms having a first end pivotally attached to said chassis sled, and having a second end; d) a pair of mounting wheels, each said mounting wheel having a lower wheel, a fender configured to cover the wheels openings in a retracted position, and a web joining the fender to the wheel lever, the wheel levers having a first end pivotally attached to the second end of one said lever arm and having a second end; e) an axle mounted to the second end of each of the wheel levers and a wheel mounted for rotation on each of the axles; f) a pair of rods extending from the lower portion of the housing, the rods defining fulcrums for the wheel levers; g) a handle assembly connected to said chassis sled; h) a locking mechanism selectively locking said chassis sled to said housing, said locking mechanism having a locking position and an unlocked position; wherein the wheels pivot to an extended position outside the housing when the handle is pulled from the housing with the locking mechanism in the unlocked position, and pivot to a retracted position when the handle is pushed into the housing.