초록 ▼

A transport cart includes a cart frame with wheels. A load carrier has bottom and side walls and an end wall structure at a first end, opposite a second end. A pivot axle is arranged between the cart frame and the load carrier so the load carrier pivots about a single axis. An interfering stop struc

A transport cart includes a cart frame with wheels. A load carrier has bottom and side walls and an end wall structure at a first end, opposite a second end. A pivot axle is arranged between the cart frame and the load carrier so the load carrier pivots about a single axis. An interfering stop structure on the cart frame and the load carrier prevents pivotal movement of the load carrier beyond a predetermined angle. The pivot axle is arranged offset relative to a center of gravity of the load carrier. A force applying device provides a pulling force on the load carrier to pivot the load carrier relative to the cart frame. An arrest mechanism may be provided to arrest pivotal movement of the load carrier in a direction opposite of the pulling force, unless the arrest mechanism is released by a user of the transport cart.

대표청구항 ▼

1. A transport cart comprising: a cart frame having wheels for engaging the ground,a load carrier having a bottom and side wall structure for supporting a load of materials to be transported by said transport cart and an end wall structure at a first end of said load carrier, opposite a second end o

1. A transport cart comprising: a cart frame having wheels for engaging the ground,a load carrier having a bottom and side wall structure for supporting a load of materials to be transported by said transport cart and an end wall structure at a first end of said load carrier, opposite a second end of said load carrier, for supporting the load of materials,a pivot axle arranged transversely between said cart frame and said load carrier to permit said load carrier to pivot relative to said cart frame about a single axis, said pivot axle being disposed closer to the second end of said load carrier than the first end of said load carrier,an interfering stop structure arranged on said cart frame and said load carrier to prevent pivotal movement of said load carrier in one direction relative to said cart frame beyond a predetermined angle,said load carrier having a center of gravity located between said first and second ends and said pivot axle being arranged on said load carrier, relative to said center of gravity, towards said second end of said load carrier, anda force applying device arranged between said cart frame and said load carrier to provide a pulling force on said load carrier between said pivot axle and said second end of said load carrier and towards said cart frame, such that said force applying device will cause said load carrier to pivot relative to said cart frame upon the application of a predetermined amount of force, said force applying device including an arrest mechanism arranged to arrest pivotal movement of said load carrier relative to said cart frame in a direction opposite of said pulling force, unless said arrest mechanism is specifically released by a user of said transport cart. 2. A transport cart according to claim 1, wherein said load carrier bottom and side walls are formed by open frame members. 3. A transport cart according to claim 1, wherein said end wall structure at said first end of said load carrier comprises a plate extending between frame members of said load carrier. 4. A transport cart according to claim 1, wherein said second end of said load carrier is open. 5. A transport cart according to claim 1, wherein said pivot axle is welded to one of the cart frame and the load carrier. 6. A transport cart according to claim 1, wherein said interfering stop comprises a frame element of said cart frame and a frame element of said load carrier which engage upon a pivoting of said load carrier relative to said cart frame when the first end of said load carrier moves downwardly toward one end of said cart frame. 7. A transport cart according to claim 1, wherein said load carrier is pivotable between a horizontal position and an angled position where said first end of said load carrier is lower than said second end of said load carrier. 8. A transport cart according to claim 1, wherein said force applying device comprises a winch mounted on said cart frame and a cable extending from said winch to said load carrier. 9. A transport cart according to claim 8, wherein said winch is manually operated by means of a crank. 10. A transport cart according to claim 8, wherein said winch includes a ratchet gear and pawl to allow for one way rotation of said winch and to arrest reverse rotational movement of said winch. 11. A transport cart according to claim 1, wherein said cart frame includes two spaced apart side structures and wherein said load carrier is sized to nest between said side structures of said cart frame in some rotational positions of said load carrier relative to said cart frame. 12. A transport cart comprising: a cart frame having wheels for engaging the ground,a load carrier having a bottom wall structure for supporting a load of materials to be transported by said transport cart and an end wall structure at a first end of said load carrier, opposite a second end of said load carrier, for supporting the load of materials,a pivot axle arranged between said cart frame and said load carrier to permit said load carrier to pivot relative to said cart frame about a single axis, said pivot axle being disposed closer to the second end of said load carrier than the first end of said load carrier,said load carrier having a center of gravity located between said first and second ends and said single axis pivot axle being secured to said load carrier, relative to said center of gravity, towards said second end of said load carrier, anda force applying device arranged between said cart frame and said load carrier to provide a force to said load carrier relative to said cart frame, such that said force applying device will cause said load carrier to pivot relative to said cart frame upon the application of a predetermined amount of force, wherein said force applying device provides a pulling force against said load carrier. 13. A transport cart according to claim 12, further comprising an interfering stop structure arranged on said cart frame and said load carrier to prevent pivotal movement of said load carrier in one direction relative to said cart frame beyond a predetermined angle, wherein said interfering stop comprises a frame element of said cart frame and a frame element of said load carrier which engage upon a pivoting of said load carrier relative to said cart frame when the first end of said load carrier moves downwardly toward one end of said cart frame. 14. A transport cart according to claim 12, wherein said force applying device comprises a winch mounted on said cart frame and a cable extending from said winch to said load carrier. 15. A transport cart according to claim 12, wherein said cart frame includes two spaced apart side structures and wherein said load carrier is sized to nest between said side structures of said cart frame in some rotational positions of said load carrier relative to said cart frame. 16. A transport cart comprising: a cart frame having wheels for engaging the ground,a load carrier having a bottom wall structure for supporting a load of materials to be transported by said transport cart and an end wall structure at a first end of said load carrier, opposite a second end of said load carrier, for supporting the load of materials,said cart frame and said load carrier being secured to a single pivot axle to permit said load carrier to pivot relative to said cart frame about a longitudinal axis of said pivot axle, said pivot axle being disposed closer to the second end of said load carrier than the first end of said load carrier,said load carrier having a center of gravity located between said first and second ends and said pivot axle being secured to said load carrier, relative to said center of gravity, towards one of said first and second ends of said load carrier, anda force applying device carried on said cart frame with a portion extending to said load carrier to provide a pulling force between said cart frame and a point on said load carrier between said pivot axle and said one of said first and second ends of said load carrier, such that said force applying device will cause said load carrier to pivot relative to said cart frame upon the application of a predetermined amount of force, said portion extending to said load carrier remaining in tension in all angular positions of said load carrier, said force applying device including an arrest mechanism arranged to arrest pivotal movement of said load carrier relative to said cart frame in a direction opposite of said pulling force, unless said arrest mechanism is released by a user of said transport cart. 17. A transport cart according to claim 16, further comprising an interfering stop structure arranged on said cart frame and said load carrier to prevent pivotal movement of said load carrier in one direction relative to said cart frame beyond a predetermined angle, wherein said interfering stop comprises a frame element of said cart frame and a frame element of said load carrier which engage upon a pivoting of said load carrier relative to said cart frame when the first end of said load carrier moves downwardly toward one end of said cart frame. 18. A transport cart according to claim 16, wherein said load applying device comprises a winch mounted on said cart frame and a cable extending from said winch to said load carrier. 19. A transport cart according to claim 16, wherein said cart frame includes two spaced apart side structures and wherein said load carrier is sized to nest between said side structures of said cart frame in some rotational positions of said load carrier relative to said cart frame.