Collapsible wheelbarrow
View Patent ↗A collapsible wheelbarrow includes a rigid front bracket, a wheel rotatably secured to the front bracket, and first and second handle arms pivotably attached to the front bracket. The first and second handle arms are laterally pivotable about first and second pivot axes respectively. The first and second pivot axes are each spaced apart from the axis of rotation of the wheel. Preferably a clamping device removably applies a clamping force between the first and second handle arms and clamps a rigid tray between the first and second handle arms. The tray is preferably interconnected with the first and second handle arms to permit relative movement in a lateral direction and to prevent relative movement in a forward rearward direction. Preferably, the front bracket has spaced apart upper and lower walls and the first and second handle arms extend between the upper and lower walls.
1. A wheelbarrow comprising, in combination:
a rigid front bracket;
a wheel rotatably secured to the front bracket and rotatable about a horizontally, laterally extending axis of rotation;
first and second handle arms pivotably attached to the front bracket;
a rigid tray; and
a clamping device extending between the first and second handle arms and removably applying a laterally-extending clamping force between the first and second handle arms to move the first and second handle arms relative to one another in a lateral direction and clamp the tray between the first and second handle arms.
2. The wheelbarrow according to claim 1 , wherein the clamping device includes a flexible cable extending between the first and second handle arms.
3. The wheelbarrow according to claim 1 , wherein the clamping device includes a rigid rod extending between the first and second handle arms.
4. The wheelbarrow according to claim 1 , wherein the tray is interconnected with the first and second handle arms to permit relative movement therebetween in a lateral direction and to prevent relative movement therebetween in each direction other than the lateral direction.
5. The wheelbarrow according to claim 1 , wherein the first and second handle arms are laterally pivotable about the first and second spaced apart pivot axes respectively and the first and second pivot axes are laterally spaced apart.
6. The wheelbarrow according to claim 1 , wherein the first and second handle arms each include telescoping upper and lower arms so that the upper arms are selectively movable between extended and retracted positions.
7. The wheelbarrow according to claim 1 , wherein the front bracket is generally U-shaped having a laterally extending front section and first and second laterally spaced apart leg sections rearwardly extending from the front section and the first and second handle arms are pivotably attached to the front bracket at the first and second leg sections respectively.
8. The wheelbarrow according to claim 1 , wherein the clamping force is adjustable.
9. The wheelbarrow according to claim 1 , wherein the laterally-extending clamping force is applied in a direction substantially parallel to the axis of rotation of the wheel.
10. The wheelbarrow according to claim 1 , wherein the clamping force pulls the first and second handle arms toward one another to clamp the tray between the first and second handle arms.
11. The wheelbarrow according to claim 1 , wherein the clamping device includes a tension member laterally extending between the first and second handle arms and having an adjustable length to selectively apply a tension force between the first and second handle arms and clamp the tray between the first and second handle arms.
12. The wheelbarrow according to claim 11 , wherein the tension member includes a flexible cable extending between the first and second handle arms in a lateral direction substantially parallel to the axis of rotation of the wheel.
13. The wheelbarrow according to claim 11 , wherein the clamping device includes a rotatable handle that increases and decreases the effective length of the tension member depending on the direction of rotation.
14. A wheelbarrow comprising, in combination:
a rigid front bracket;
a wheel rotatably secured to the front bracket and rotatable about a horizontally, laterally extending axis of rotation;
first and second handle arms pivotably attached to the front bracket;
a rigid tray removably secured to first and second handle arms;
wherein the tray is interconnected with the first and second handle arms to permit relative movement therebetween in a lateral direction and to prevent relative movement therebetween in a forward-rearward direction; and
a clamping device extending between the first and second handle arms and removably applying a laterally-extending clamping force between the first and second handle arms to move the first and second handle arms relative to one another in a lateral direction and clamp the tray between the first and second handle arms.
15. The wheelbarrow according to claim 14 , wherein the tray is interconnected with the first and second handle arms to permit relative movement therebetween in a lateral direction and to prevent relative movement therebetween in each direction other than the lateral direction.
16. The wheelbarrow according to claim 14 , wherein the tray has tabs extending laterally outward and the first and second handle arms have slots receiving the tabs.
17. The wheelbarrow according to claim 14 , wherein the tray has rails extending laterally outward and the first and second handle arms have grooves receiving the rails.
18. The wheelbarrow according to claim 14 , wherein the first and second handle arms are laterally pivotable about the first and second spaced apart pivot axes respectively and the first and second pivot axes are laterally spaced apart.
19. The wheelbarrow according to claim 14 , wherein the first and second handle arms each include telescoping upper and lower arms so that the upper arms are selectively movable between extended and retracted positions.
20. The wheelbarrow according to claim 14 , wherein the front bracket is generally U-shaped having a laterally extending front section and first and second laterally spaced apart leg sections rearwardly extending from the front section and the first and second handle arms are pivotably attached to the front bracket at the first and second leg sections respectively.
21. The wheelbarrow according to claim 14 , wherein the clamping force is adjustable.
22. The wheelbarrow according to claim 14 , wherein the laterally-extending clamping force is applied in a direction substantially parallel to the axis of rotation of the wheel.
23. The wheelbarrow according to claim 14 , wherein the clamping force pulls the first and second handle arms toward one another to clamp the tray between the first and second handle arms.
24. The wheelbarrow according to claim 14 , wherein the clamping device includes a tension member laterally extending between the first and second handle arms and having an adjustable length to selectively apply a tension force between the first and second handle arms and clamp the tray between the first and second handle arms.
25. The wheelbarrow according to claim 24 , wherein the tension member includes a flexible cable extending between the first and second handle arms in a lateral direction substantially parallel to the axis of rotation of the wheel.
26. The wheelbarrow according to claim 24 , wherein the clamping device includes a rotatable handle that increases and decreases the effective length of the tension member depending on the direction of rotation.