Cross-members and pin couplers for lift arms
AssigneeCaterpillar Inc.
InventorsRiley A. Albers, Steven D. Springer, Rowan T. Franks, David R. Evans
Life of this patent
Estimating the term…
Abstract
A lift arm for a loader can comprise a pivot end section extending along a first axis and including a first pin hole defining an origin at the intersection of x- and y-axes, a bucket end section extending along a second axis and including a second pin hole located a first distance away from the origin on the y-axis, and a hump section connecting the pivot and bucket end sections comprising a lifting cylinder coupler section including a third pin hole located a second distance away from the y-axis and a torque tube coupling section.
Claims22
A lift arm for a loader, the lift arm comprising:
- a pivot end section extending along a first axis and including a first pin hole defining an origin at the intersection of a horizontal x-axis and a vertical y-axis;
- a bucket end section extending along a second axis and including a second pin hole located a first distance away from the origin on the y-axis;
- and
- a hump section connecting the pivot end section and the bucket end section, the hump section comprising:
- a lifting cylinder coupler section including a third pin hole located a second distance away from the y-axis that is approximately one-third of the first distance;
- a torque tube coupling section;
- and
- a peak located a third distance from the x-axis that is the furthest point of the hump section from an axis extending between the first pin hole and the third pin hole, the peak being located closer to the origin than the third pin hole.
(canceled)
-21. (canceled)
A lift arm for a loader, the lift arm comprising:
- a pivot end section extending along a first axis and including a first pin hole defining an origin at the intersection of a vertical x-axis and a horizontal y-axis;
- a bucket end section extending along a second axis and including a second pin hole located a first distance away from the origin on the y-axis;
- and
- a hump section connecting the pivot end section and the bucket end section, the hump section comprising:
- a lifting cylinder coupler section including a third pin hole located a second distance away from the y-axis that is approximately one-third of the first distance, wherein the lifting cylinder coupler section comprises a pocket comprising:
- a first sidewall bulging out from a first side of the lift arm;
- a second sidewall bulging out from a second side of the lift arm;
- a space between the first sidewall and the second sidewall;
- and
- a pair of pin holes extending through the first and second sidewalls;
- and
- a torque tube coupling section.
A lift arm for a loader, the lift arm comprising:
- a pivot end section extending along a first axis and including a first pin hole defining an origin at the intersection of a vertical x-axis and a horizontal y-axis;
- a bucket end section extending along a second axis and including a second pin hole located a first distance away from the origin on the y-axis;
- and
- a hump section connecting the pivot end section and the bucket end section, the hump section comprising:
- a lifting cylinder coupler section including a third pin hole located a second distance away from the y-axis that is approximately one-third of the first distance;
- and
- a torque tube coupling section;
- wherein:
- the first pin hole has x and y coordinates within a 0.1 tolerance radius of (0, 0);
- the second pin hole has x and y coordinates within a 0.1 tolerance radius of (3.48, 0.0);
- and
- the third pin hole has x and y coordinates within a 0.1 tolerance radius of (1.14, 0.24).
Dependencies are inferred from the claim text.