Patent · US Active

Dragline bucket, rigging and system

US7774959B2 · kind B2 · utility

15Cited by

18References

3Claims

0Family size

Assignee

ESCO GROUP LLC · US

Inventors

Kenneth Kubo · Milwaukie, US
Steven D. Hyde · Portland, US
Aaron B. Lian · Waterloo, BE

Key dates

Filing date	Jan 21, 2009
Grant date	Aug 17, 2010
Priority date	—
Expiry date	Mar 10, 2029

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE02F3/60
WIPO fieldCivil engineering
WIPO sectorOther fields

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.