초록 ▼

The disclosure relates to a cart or pick-up truck capable of transporting a load on level ground, hills and inclines and up stairways and the like wherein the operator thereof is capable of maintaining a constant erect position during operation, regardless of the contour of the terrain over which th

The disclosure relates to a cart or pick-up truck capable of transporting a load on level ground, hills and inclines and up stairways and the like wherein the operator thereof is capable of maintaining a constant erect position during operation, regardless of the contour of the terrain over which the cart is driven. The cart includes a frame having a rotatable upward handle portion, the handle portion being rotatable in a direction away from and toward the operator and having a stop when rotated in a direction toward the operator so that the rotatable portion of the handle is never rotated to the point where it is coaxial with the remaining portion of the frame. The cart also includes a pair of individually rotatable wheels, each wheel having a rotatable shaft whereby the wheels individually seek their own level, depending upon the terrain over which the cart is pulled or pushed.

대표청구항 ▼

A hand truck comprising a substantially upright frame member extending in a plane, a platform extending from the lower end of the frame member transversely to said plane, a pair of wheels, means mounting the wheels on the lower end of the frame member for respective independent rotation about axes p

A hand truck comprising a substantially upright frame member extending in a plane, a platform extending from the lower end of the frame member transversely to said plane, a pair of wheels, means mounting the wheels on the lower end of the frame member for respective independent rotation about axes parallel to said plane on the side opposite to that on which the platform is located, a handle pivoted to rotate freely on the upper end of the frame about an axis parallel to the wheel axes, and stop means on the frame and handle for confining pivotal movement of the handle to a position above the platform.