Material transport cart

Abstract

A cart for transporting material has wheels located intermediate to end wheels, the intermediate wheels extending downwardly a greater distance than the end wheels so that the cart may tilt and may be turned around the intermediate wheels. The wheels may be mounted on flanges depending from a frame of the cart, the flanges serving to protect the wheels and serving to support the cart in the event of a wheel failure. The cart may have a pair of wheels located intermediate to the end wheels so that traversing uneven terrain is improved and eased, and so that the intermediate wheels serve as backups to each other. The intermediate wheels may be a same or similar size, though mounted lower on the flanges, than the end wheels. The intermediate wheels may be larger than the end wheels.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of an embodiment of a material transport cart of the present invention;

FIG. 2 is a side elevational view of the cart of FIG. 1;

FIG. 3 is a bottom plan view of the cart of FIG. 1;

FIG. 4 is a fragmentary perspective view of a bottom side of the cart of FIG. 1; and

FIG. 5 is a side elevational view of a second form of a material transport cart of the present invention.

Claims

1. A cart for transporting material, the cart comprising: a frame; anda plurality of wheels rotatably mounted to the frame in substantially parallel alignment and having lowermost points, a first pair of the wheels generally positioned at a first end of the cart, a second pair of the wheels positioned generally at a second end of the cart, and third and fourth pairs of the wheels being positioned generally intermediate the first and second pairs of the wheels, wherein the third pair of the wheels is positioned in relative close proximity to the fourth pair of the wheels, the lowermost points of the first and second pairs of the wheels are tangent to a first plane below the frame, and the lowermost points of the third and fourth pairs of wheels are spaced further below the frame than the first plane.

2. The cart of claim 1 wherein a first wheel of each respective pair is secured on a first side of the frame, and a second wheel of each respective pair is secured on a second side of the frame opposite the first side of the frame.

3. The cart of claim 1 wherein the wheels of the third and fourth pairs are larger than the wheels of the first and second pairs.

4. The cart of claim 1 wherein the cart is tiltable so that the first and second pairs of wheels are alternately contactable with an underlying ground surface.

5. The cart of claim 1 wherein the cart includes a tower structure extending upwardly from the frame, the tower structure including securement structure for receiving, supporting, or securing material therewith.

6. The cart of claim 1 wherein the tower structure is adapted for securing gas cylinders.

7. The cart of claim 1 wherein the third and fourth pairs of wheels are mounted lower on the frame than the first and second pairs of wheels.

8. A cart for transporting material, the cart comprising: a frame including flange portions extending downwardly therefrom;a plurality of wheels rotatably mounted to the flange portions in substantially parallel alignment and having lowermost points, a first pair of the wheels generally positioned at a first end of the cart, a second pair of the wheels positioned generally at a second end of the cart, and at least a third pair of the wheels being positioned generally intermediate the first and second pairs of the wheels, the lowermost points of the wheels of the third pair being lower than the lowermost points of the first and second pairs of the wheels, the flange portions extending over sides of the wheels to a position in close proximity to an underlying ground surface.

9. The cart of claim 8 wherein the third pair of wheels is mounted lower on the frame than the first and second pairs of wheels.

10. The cart of claim 8 wherein each wheel is mounted between a pair of flange portions.

11. The cart of claim 8 wherein first wheels of each respective pair of the wheels are secured on a first flange portion substantially in rolling alignment with each other, and second wheels of each respective pair of the wheels are secured on a second flange portion substantially in rolling alignment with each other.

12. The cart of claim 11 wherein the first wheels are mounted between the first flange portion and a third flange portion, and the second wheels are mounted between the second flange portion and a fourth flange portion.

13. The cart of claim 11 wherein the first wheels are mounted generally at one side of the frame, and the second wheels are mounted generally at a second side of the frame.

14. The cart of claim 8 further including a fourth pair of wheels positioned generally intermediate the first and second pairs of the wheels, wherein the fourth pair of the wheels is positioned in relative close proximity to the third pair of the wheels, and wherein the third and fourth pairs of wheels are mounted at approximately the same height on the flange portions.

15. A cart for transporting material, the cart comprising: a frame; anda plurality of wheels rotatably mounted to the frame in substantially parallel alignment a first pair of the wheels generally positioned at a first end of the cart, a second pair of the wheels positioned generally at a second end of the cart, and third and fourth pairs of the wheels being positioned generally intermediate the first and second pairs of the wheels, wherein the third pair of the wheels is positioned in relative close proximity to the fourth pair of the wheels, and the third and fourth pairs of wheels are tangent to a first plane and the first and second pairs are tangent to a second plane, the first plane spaced further below the frame than the second plane.

16. The cart of claim 15 wherein the third and fourth pairs of wheels are mounted lower on the frame than the first and second pairs of wheels.

17. The cart of claim 15 wherein a first wheel of each respective pair is secured on a first side of the frame, and a second wheel of each respective pair is secured on a second side of the frame opposite the first side of the frame.

18. The cart of claim 15 wherein the cart is tiltable so that the first and second pairs of wheels are alternately contactable with an underlying support surface.

19. The cart of claim 15 wherein the cart includes a tower structure extending upwardly from the frame, the tower structure including securement structure for receiving, supporting, or securing material therewith.

20. The cart of claim 15 wherein the tower structure is adapted for securing gas cylinders.