Patent ID: 7296820

Claim:
A foldable device frame, comprising: a front wheel; left and right side laterally spaced-apart front wheel supports, each of the left and right side front wheel supports having a forward end portion and a rearward end portion, the front wheel being mounted to the forward end portion of at least one of the front wheel supports, the left and right side front wheel supports being rotatable as a unit; left and right rear wheels; left and right side laterally spaced-apart rear wheel supports, each of the left and right side rear wheel supports having a lower end portion and an upper end portion, the lower end portions being coupled to at least one of the left and right rear wheels; left and right side laterally spaced-apart handle members, each of the left and right side handle members having a forward end portion and a rearward end portion, the left and right side handle members being rotatable as a unit, at least one of the left and right side handle members having a handle portion; and left and right side laterally spaced-apart folding assemblies, each of the left and right side folding assemblies having a first rotatable member and a second rotatable member with each rotatably coupled to a pivot member supported by the upper end portion of a corresponding one of the left and right side rear wheel supports for rotation about a common axis of rotation, the rearward end portion of a corresponding one of the left and right side front wheel supports being fixedly attached to the first rotatable member, and the forward end portion of a corresponding one of the left and right side handle members being fixedly attached to the second rotatable member, wherein the left and right folding assemblies each further include a member slidably movable relative to the corresponding one of the left and right side rear wheel supports, and the first and second rotatable members of each folding assembly further include a notch to receive the member therein when the first and second rotatable members are rotated about the pivot member to position the handle member and the front wheel support attached thereto in an unfolded state.