Patent ID: 6179542
Filing Date: 2001-01-30
Classification: B60B,B62B

Abstract:
A kneeling dolly with ramp brake comprising:a body comprising a wheel well disposed adjacent to a ramp, whereby a vehicle wheel disposed on said kneeling dolly with ramp brake is prevented from rolling off:at least one rear wheel;a pair of front wheels swivellably attached to respective wheel bases adjacent said ramp, each said wheel base being rigidly attached to one extreme of a connecting rod, the two wheel bases being substantially mutually coplanar, said connecting rod being rotatable attached to said body, whereby rotation of said connecting rod causes both said front wheels to extend or retract in concert; anda means to extend and retract said pair of front wheels, whereby when said pair of front wheels is retracted, a lower surface of said body contacts a surface upon which said kneeling dolly with ramp brake rests, thus creating a frictional ramp brake, said means to extend and retract said pair of front wheels comprising a threaded rod, one extreme of said threaded rod being rotatably attached to said body, an opposite extreme of said threaded rod being threadably connected to a nut, said nut being rotatably attached to one extreme of an actuator arm, an extreme of said actuator arm opposite said nut being rigidly attached to said connecting rod, whereby rotation of said threaded rod causes said nut to translate axially on said threaded rod, thus causing said connecting rod to rotate relative to said body, thereby extending or retracting said pair of front wheels, whereby a lever effect of said actuator arm and a force augmenting effect of said threaded rod reduces an amount of force required to rotate said threaded rod in order to extend or retract said pair of front wheels.