Retention system for ripper tips
AssigneeCaterpillar Inc.
InventorNathan R. Bjerke
Life of this patent
Estimating the term…
Abstract
A work tool or a wear member includes a working portion or a wear portion, a hollow portion that further defines a lock receiving aperture defining an axis of rotation, a radial direction, and a circumferential direction. The axis of rotation is transverse to the direction of assembly of work tool or wear member as the member is slid over a nose portion of a tool adaptor or the like. The axis of rotation is spaced away from the direction the pin receiving thru-hole extends a predetermined distance measured along the direction of assembly.
Claims20
A ripper shank and ripper tip subassembly for attaching ripper tips to a machine, the subassembly comprising:
- a ripper shank including a top ripper assembly attachment portion, and a bottom ripper tip retention portion;
- a lock;
- a retainer;
- and
- a pin;
- wherein the bottom ripper tip retention portion includes a nose portion defining an axis of extension, and a pin receiving aperture extending completely through nose portion.
The subassembly of claim I further comprising a ripper tip including a hollow portion defining a nose portion receiving cavity, a pin receiving thru-hole that extends completely through the hollow portion and that is in communication with the nose portion receiving cavity, and wherein the ripper tip is disposed on the nose portion of the bottom ripper tip retention portion of the ripper shank, and the pin is disposed in the pin receiving thru-hole of the hollow portion of the ripper tip and the pin receiving aperture of the bottom ripper tip retention portion of the ripper shank.
A retaining system comprising:
- a lock including a drive portion, that defines an axis of rotation, a radial direction, and a circumferential direction, and further including a locking portion including an outer peripheral surface, and a wing that extends radially outwardly from the outer peripheral surface, the locking portion is connected to the drive portion by a wall, and further comprising a rib extending axially from the wall toward the drive portion forming an annular cavity, defining at least one detent receiving aperture that is disposed in the annular cavity;
- and
- a retainer that is configured to fit within the annular cavity.
A work tool or a wear member comprising:
- a working portion or a year portion;
- and
- a hollow portion defining an exterior, and a nose portion receiving cavity with a direction of assembly, a pin receiving thru-hole that is disposed along the direction of assembly and that extends completely through the hollow portion along a direction that is transverse to the direction of assembly, and that is in communication with the nose portion receiving cavity,
- wherein the hollow portion further defines a lock receiving aperture defining an axis of rotation, a radial direction, and a circumferential direction, and the axis of rotation is transverse to the direction of assembly, and the axis of rotation is spaced away from the direction the pin receiving thru-hole extends a predetermined distance measured along the direction of assembly.
Dependencies are inferred from the claim text.