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US 11,781,293 B2Granted
Retention system for motor grader bits
AssigneeCaterpillar Inc.
InventorsNathan R. Bjerke, Thomas Marshall Congdon
Life of this patent
Estimating the term…
Abstract
A work tool or a wear member includes a working portion or a wear portion, and a shank extending from the working portion or the wear portion, defining a longitudinal axis, and a first lock receiving groove that defines an axis of rotation that is perpendicular to the longitudinal axis of the shank.
Claims10
An adaptor board assembly for attaching grading bits to a machine, the adaptor board assembly comprising:
- an adaptor board including a top moldboard attachment portion, and a bottom grading bit retention portion;
- a lock;
- and
- a retainer;
- wherein the bottom grading bit retention portion defines a shank receiving aperture defining a longitudinal axis, a lock receiving aperture in communication with the shank receiving aperture, and the lock receiving aperture defines an axis of rotation that forms an angle with the longitudinal axis of the shank receiving aperture in a plane containing the longitudinal axis and the axis of rotation ranging from 80 degrees to 100 degrees.
2 more elements
Dependencies are inferred from the claim text.