Dragline bucket, rigging and system
First Claim
1. A dragline bucket comprising a bottom wall, a pair of sidewalk, and a rear wall that collectively define a cavity for gathering earthen material having a capacity of at least 30 cubic yards, each of the sidewalls including a forward area, the sidewalk in at least the forward area tapering substantially from a top of the cavity to the bottom wall so as to converge toward each other in the direction of the bottom wall at an angle of about seven degrees to about twenty degrees to vertical.
4 Assignments
0 Petitions
Accused Products
Abstract
A dragline bucket includes a bottom wall, a pair of sidewalls and a rear wall that collectively define a cavity. The sidewalls each have a large downward taper of at least about 7 degrees in at least its forward area. In an alternative embodiment, the sidewalls each have an upward taper in its rearward area which alleviates the need for a spreader bar. The dragline bucket collects earthen material with minimal disruption of the material.
-
Citations
17 Claims
- 1. A dragline bucket comprising a bottom wall, a pair of sidewalk, and a rear wall that collectively define a cavity for gathering earthen material having a capacity of at least 30 cubic yards, each of the sidewalls including a forward area, the sidewalk in at least the forward area tapering substantially from a top of the cavity to the bottom wall so as to converge toward each other in the direction of the bottom wall at an angle of about seven degrees to about twenty degrees to vertical.
Specification