IP Library Granted Patent US 12709874
Granted Patent B2
US 12709874 · App. 18/356,290 · Granted Aug 18, 2026

Retention system with threaded block locking mechanism

Inventors: Corey Michael Wells (East Peoria, IL); Eric Thomas Sinn (Tremont, IL); Brandon Hammig McCaffrey (St. Louis, MO); William Jay Ulrich, IV (East Peoria, IL); Douglas Charles Serrurier (Morton, IL)
Assignee: Caterpillar Inc.
E02F9/2841E02F9/2825
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12709874
App. No.
18/356,290
Granted
Aug 18, 2026
Kind
B2
Abstract

A retention mechanism for connecting a ground engaging tip and an adapter has a spring, a retainer block configured for insertion into a cutout in the adapter, and a retainer. The retainer block has a cavity having an internal thread. The retainer block also has an outer surface defining a contact surface, a back surface opposite the contact surface, and a plurality of angled surfaces between the contact surface and the back surface. Further, the retainer block has a slot passing through the back surface and configured to receive the spring. The retainer is configured for insertion in in the cavity of the retainer block. The retainer has a threaded outer surface configured to engage with the internal thread of the retainer block, a detent cutout configured to receive a portion of the spring, and a chamfered bottom surface configured to engage with and deflect the portion of the spring.

Claims (55)

1 . A retention mechanism for connecting a ground engaging tip and an adapter, the retention mechanism comprising:

a spring;

a retainer block configured for insertion into a cutout in the adapter, wherein the retainer block comprises:

a cavity having an internal thread;

an outer surface comprising a contact surface, a back surface opposite the contact surface, and a plurality of angled surfaces between the contact surface and the back surface; and

a slot that extends through the back surface and is configured to receive the spring; and

a retainer configured for insertion in the cavity of the retainer block, wherein the retainer comprises:

a threaded outer surface configured to engage with the internal thread of the retainer block;

a detent cutout configured to receive a portion of the spring; and

a chamfered bottom surface configured to engage with and deflect the portion of the spring.

2 . The retention mechanism of claim 1 , wherein the spring further comprises:

a rear portion;

a front portion that is narrower than the rear portion;

a first side portion; and

a second side portion.

3 . The retention mechanism of claim 2 , wherein the front portion of the spring comprises one of a flat front portion, a rounded front portion, a concave front portion, or a convex front portion.

4 . The retention mechanism of claim 1 , wherein a cross section of the spring comprises at least one of a square cross section, a round cross section, a rectangular cross section, or an elliptical cross section.

5 . The retention mechanism of claim 1 , wherein the retainer block further comprises a cutout within a body of the retainer block for deflection of the spring.

6 . The retention mechanism of claim 1 , wherein a thread wrap angle of the retainer comprises an angle ranging between 90 degrees and 540 degrees.

7 . The retention mechanism of claim 1 , wherein the detent cutout comprises a lower surface and an angled upper surface.

8 . The retention mechanism of claim 1 , wherein the retainer further comprises a pocket for removing the retainer from the retainer block.

9 . The retention mechanism of claim 8 , wherein the pocket has a square shape.

10 . An adapter nose for connecting a ground engaging tip to a base edge of a ground engaging implement, the adapter nose comprising:

a front surface including a bottom edge, opposing side edges extending from and disposed generally perpendicular to the bottom edge, and a top edge disposed generally parallel to the bottom edge;

a top surface;

a bottom surface, wherein the top surface and the bottom surface extend forward from a rear edge of the adapter nose and converge at the front surface of the adapter nose;

first and second side surfaces extending forward from the rear edge of the adapter nose to the front surface; and

a cutout in the first side surface configured to accept a retainer block, wherein the cutout comprises a plurality of inner side surfaces connected to a base surface by a plurality of inner rounded surfaces.

11 . The adapter nose of claim 10 , wherein the plurality of inner side surfaces comprise a front surface, a front upper surface, an upper surface, a rear upper surface, a rear surface, a rear lower surface, a lower surface, and a front lower surface.

12 . The adapter nose of claim 11 , wherein the plurality of inner side surfaces further comprise a plurality of transition side surfaces.

13 . The adapter nose of claim 11 , wherein the front surface of the cutout is planar and parallel to the front surface of the adapter nose.

14 . The adapter nose of claim 11 , wherein the rear surface of the cutout is planar and parallel to the rear edge of the adapter nose.

15 . The adapter nose of claim 10 , wherein the base surface is recessed in the adapter nose at a cutout depth, wherein the cutout depth comprises a depth greater than ten percent of a rear nose width.

16 . A tip assembly comprising:

an adapter comprising an adapter nose, wherein the adapter nose comprises:

a front surface;

a top surface;

a bottom surface, wherein the top surface and the bottom surface extend forward from a rear edge of the adapter nose and converge at the front surface of the adapter nose;

first and second side surfaces extending forward from the rear edge of the adapter nose to the front surface; and

a cutout in the first side surface, wherein the cutout comprises a plurality of inner side surfaces connected to an inner surface by a plurality of inner rounded surfaces;

a ground engaging tip, comprising a nose cavity configured to receive the adapter nose, wherein the ground engaging tip comprises:

a rear edge;

a top outer surface;

a bottom outer surface, wherein the top outer surface and the bottom outer surface extend forward from the rear edge and converge at a front edge of the ground engaging tip;

first and second lateral outer surfaces extending forward from the rear edge to the front edge, wherein the first lateral outer surface includes an opening;

a retention mechanism comprising:

a spring;

a retainer block configured for insertion into the cutout in the first side surface of the adapter, the retainer block including:

a cavity; and

a slot extending transverse to the cavity and through an outer surface of the retainer block, the slot configured to receive the spring; and

a retainer configured for insertion in the cavity of the retainer block through the opening in the first lateral outer surface of the ground engaging tip, the retainer being further configured to receive at least a portion of the spring in a detent cutout of the retainer.

17 . The tip assembly of claim 16 , wherein a diameter of the opening is sixty percent of a height of the nose cavity.

18 . The tip assembly of claim 16 , wherein the opening further comprises a pre-seated surface.

19 . The tip assembly of claim 16 , wherein the opening further comprises a drafted surface area around a circumference of the opening.

20 . The tip assembly of claim 16 , wherein the ground engaging tip further comprises a second opening on the second lateral outer surface.