Tip with thru-hole and pin retaining geometry

Patent metadata

Field	Value
Publication number	US-11879235-B2
Application number	US-202117464838-A
Country	US
Kind code	B2
Filing date	Sep 2, 2021
Priority date	Sep 2, 2021
Publication date	Jan 23, 2024
Grant date	Jan 23, 2024

Abstract

A wear member includes a forward working portion that is disposed along its longitudinal axis including a closed end, and a rear attachment portion that is disposed along the longitudinal axis including an open end with an exterior surface, and an interior surface. The interior surface defines an interior counterbore with a major diameter, and a minor diameter. A ratio of the major diameter to the minor diameter ranges from 1.8 to 2.2.

First claim

What is claimed is:

1. A tip assembly comprising:
a tip with a body that defines a longitudinal axis, a vertical axis that is perpendicular to the longitudinal axis, and a lateral axis that is perpendicular to the longitudinal axis and the vertical axis, the tip including:
a forward working portion that is disposed along the longitudinal axis including a closed end; and
a rear attachment portion that is disposed along the longitudinal axis including an open end with an exterior surface, and an interior surface,

wherein the exterior surface of the tip defines a first ear, the interior surface of the tip defines an interior counterbore with a major diameter, and a minor diameter that extends through the first ear, and a ratio of the major diameter to the minor diameter ranges from 1.8 to 2.2, and
wherein the exterior surface of the tip defines a second ear, including a thru-hole having a constant diameter extending from the interior surface of the tip to the exterior surface of the tip.

2. The tip assembly of claim 1 , wherein the minor diameter extends laterally completely through the tip.

3. The tip assembly of claim 1 , further comprising a retaining mechanism that is disposed in the interior counterbore.

4. The tip assembly of claim 3 , wherein the retaining mechanism includes a sleeve and a spring that is disposed in the interior counterbore.

5. The tip assembly of claim 4 , further comprising a pin that is disposed in the minor diameter of the interior counterbore, and that engages the spring.

6. The tip assembly of claim 1 , wherein the thru-hole in the second ear is coextensive with the minor diameter of the interior counterbore.

7. The tip assembly of claim 6 , wherein the minor diameter is constant.

8. A wear member comprising:
a shell body defining a rear opening forming an interior surface, the shell body including:
an exterior surface;
a first ear protruding laterally outward from the exterior surface;
a rail receiving groove on the interior surface extending from the rear opening; and
a single hole extending from the exterior surface through the first ear to the rail receiving groove, and defining a constant diameter.

9. The wear member of claim 8 , wherein the shell body further includes:
a second ear protruding laterally outward from the exterior surface; and
another rail receiving groove on the interior surface extending from the rear opening.

10. The wear member of claim 8 , wherein the interior surface defines a counterbore that is in communication with the single hole of the first ear defining another constant diameter.

11. The wear member of claim 10 , wherein a ratio of the constant diameter of the counterbore to the constant diameter of the single hole ranges from 1.8 to 2.2.

12. The wear member of claim 8 , wherein the rail receiving groove has a maximum width at the interior surface.

13. The wear member of claim 9 , the single hole is a first single hole and the shell body further includes a second single hole extending from the exterior surface through the second ear to the rail receiving groove, and defining a constant diameter.

14. The wear member of claim 13 , wherein the first single hole is aligned with the second single hole.

Assignees

• Caterpillar Inc

Inventors

• Serrurier Douglas C
• Sinn Eric T
• Jura Jason Grant
• Wells Corey Michael

Classifications

• E02F9/2841 Primary

  resilient · CPC title

• E02F9/2825

  using adapters · CPC title

• E02F9/2833 Primary

  Retaining means, e.g. pins · CPC title

• E02F9/2858

  characterised by shape · CPC title

• E02F9/2875

  Ripper tips · CPC title