Back to results
US 2006/0124570 A1Published application
Enclosed-reeving, live-line boom
OwnerMethody Slobogean, Fred Smith +2inventors
InventorsMethody Slobogean, Fred Smith, Todd Mendenhall, Nathan Morrill
Life of this patent
Estimating the term…
Abstract
A crane comprising a boom formed as an elongate tubular structure and a line assembly to extend a line from a least one end of the boom. The line assembly may include a first bank of sheaves, a second bank of sheaves, a line reeved around the first and second banks of sheaves, and an extension mechanism controlling the distance between the first and second banks of sheaves. The second bank of sheaves and at least a portion of the extension mechanism being enclosed within boom.
Claims20
A crane comprising:
- a boom comprising an elongate tubular structure having two ends defining a longitudinal direction;
- and
- a line assembly to extend a line from a least one end of the boom, the assembly comprising:
- a first bank of sheaves;
- a second bank of sheaves:
- the line reeved around the first and second banks of sheaves;
- a first hydraulic cylinder controlling the distance between the first and second banks of sheaves;
- and
- the second bank of sheaves and at least a portion of the first hydraulic cylinder being enclosed within the elongate tubular structure.
6 more elements
An apparatus comprising:
- a boom extending in a longitudinal direction and comprising a housing, an extension, and a lock, the extension positioned within the housing to translate therewith and extend therefrom in the longitudinal direction, the lock selectively securing the extension with respect to the housing;
- and
- a line assembly to receive a line and comprising:
- a first bank of sheaves;
- a second bank of sheaves:
- a hydraulic cylinder controlling the distance between the first and second banks of sheaves;
- and
- the second bank of sheaves and at least a portion of the hydraulic cylinder being enclosed within the extension.
5 more elements
An apparatus comprising:
- a boom extending to define a longitudinal direction and comprising a tubular housing, a tubular extension, and a lock, the tubular extension positioned within the tubular housing to translate therewith and extend therefrom in the longitudinal direction, the lock selectively securing the tubular extension with respect to the tubular housing;
- a post pivotably supporting the boom;
- a first hydraulic cylinder controlling the position of the boom with respect to the post;
- a cable assembly comprising:
- a first bank of sheaves;
- a second bank of sheaves spaced in the longitudinal direction from the first bank of sheaves:
- a second hydraulic cylinder controlling the distance between the first and second banks of sheaves;
- and
- the second bank of sheaves and at least a portion of the second hydraulic cylinder being positioned with the extension;
- and
- a cable having a first end, an intermediate portion and a second end, the first end connected to the tubular extension, the intermediate portion reeved between the first and second banks of sheaves, the second end suspended from the boom proximate an end thereof.
8 more elements
Dependencies are inferred from the claim text.