초록 ▼

The hand truck or dolly of the present invention is capable of multi-directional movement and provides an operator with complete control of movement and directional choice for the hand truck without having to remove his hands from a handgrip location to achieve mechanical adjustments of the wheels.

The hand truck or dolly of the present invention is capable of multi-directional movement and provides an operator with complete control of movement and directional choice for the hand truck without having to remove his hands from a handgrip location to achieve mechanical adjustments of the wheels. Rather, an operator may adjust a wheel index position on-the-fly by means of a trigger assembly to rotate a wheel assembly about a vertical axis of rotation within a range of motion of approximately 100 degrees. The two, independent wheel assemblies of the hand truck of the present invention achieve multi-directional movement through positioning of the wheels in a standard index position allowing for forward and backward movement, a lateral index position allowing for lateral, or side to side, movement, or a rotational index position allowing for rotational movement, such as for cornering and circular movement.

대표청구항 ▼

What is claimed is: 1. A hand truck comprising a backing frame, wherein said backing frame is an inverted u-shape with a backing frame hand grip area that has ninety degree radial bends on each side to communicate with equal length, parallel, longitudinal left and right sides of said backing frame,

What is claimed is: 1. A hand truck comprising a backing frame, wherein said backing frame is an inverted u-shape with a backing frame hand grip area that has ninety degree radial bends on each side to communicate with equal length, parallel, longitudinal left and right sides of said backing frame, further wherein said backing frame further comprises load supports for stabilization of said backing frame; a toe plate for supporting loads to be transported and which communicates with said backing frame, wherein said toe plate is z-shaped in cross-section and which provides a load-bearing platform forward of said backing frame and an elevated platform rearward of said backing frame, further wherein said elevated platform of said toe plate contains index position throughholes; and a pair of independent wheel indexing assemblies which communicate with said backing frame and said toe plate, wherein each of said independent wheel indexing assemblies are independently rotatable through a range of motion of approximately 100 degrees which allows said hand truck to be capable of multi-directional movement in a standard direction, a lateral direction and a rotational direction. 2. The hand truck of claim 1, wherein each of said wheel indexing assemblies further comprises a hand grip which attaches to an indexing column which attaches to a wheel mount which houses a wheel, and a trigger assembly for operation of said wheel indexing assembly, further wherein said indexing column attaches to a side of said backing frame. 3. The hand truck of claim 2, wherein said trigger assembly is further comprised of a trigger which communicates with a cable which in turn communicates with a latch pin. 4. The hand truck of claim 3, wherein said wheel indexing assembly pivotally engages with various indexing positions by means of an operator of said hand truck compressing said trigger, which in turn draws on said cable and disengages said latch pin from an original index position throughhole, and then said operator pivots said wheel indexing assembly to another index position throughhole, releases said trigger, which in turn reengages said latch pin with said other index position throughhole. 5. The hand truck of claim 4, wherein said index position throughholes allow for multi-directional movement orientation of said hand truck in a standard direction. 6. The hand truck of claim 4, wherein said wheel index position throughholes allow for multi-directional movement orientation of said hand truck in a lateral direction. 7. The hand truck of claim 4, wherein said wheel index position throughholes allow for multi-directional movement orientation of said hand truck in a rotational direction. 8. A hand truck comprising a backing frame, wherein said backing frame is an inverted u-shape with a backing frame hand grip area that has ninety degree radial bends on each side to communicate with equal length, parallel, longitudinal left and right sides of said backing frame, further wherein said backing frame further comprises load supports for stabilization of the backing frame; a toe plate for supporting loads to be transported and which communicates with said backing frame, wherein said toe plate is z-shaped in cross-section and which provides a load-bearing platform forward of said backing frame and an elevated platform rearward of said backing frame, further wherein said elevated platform of the toe plate contains index position throughholes; a pair of independent wheel indexing assemblies comprising a hand grip which attaches to an indexing column, which attaches to a wheel mount, which houses a wheel, and a trigger assembly for operation of said wheel indexing assembly comprising a trigger which communicates with a cable which in turn communicates with a latch pin, further wherein said indexing column attaches to a side of said backing frame; wherein each of said independent wheel indexing assemblies are independently rotatable through a range of motion of approximately 100 degrees which allows said hand truck to be capable of multi-directional movement in a standard direction, a lateral direction and a rotational direction. 9. The hand truck of claim 8, wherein said wheel indexing assembly is pivotally engaged with various indexing positions by means of an operator of said hand truck compressing said trigger, which in turn draws on said cable and disengages said latch pin from an original index position throughhole, and then said operator pivots said wheel indexing assembly to another index position throughhole, releases said trigger, which in turn reengages said latch pin with said other index position throughhole. 10. The hand truck of claim 8, wherein said index position throughholes allow for multi-directional movement orientation of said hand truck in a standard direction. 11. The hand truck of claim 8, wherein said index position throughholes allow for multi-directional movement orientation of said hand truck in a lateral direction. 12. The hand truck of claim 8, wherein said index position throughholes allow for multi-directional movement orientation of said hand truck in a rotational direction.