Safety chain system

Patent metadata

Field	Value
Publication number	US-11701933-B2
Application number	US-202117460432-A
Country	US
Kind code	B2
Filing date	Aug 30, 2021
Priority date	Feb 8, 2019
Publication date	Jul 18, 2023
Grant date	Jul 18, 2023

Abstract

A safety chain system that includes a drawbar hanger. The drawbar hanger includes a drawbar frame that defines a first aperture. A drawbar rests within the first aperture. A safety chain anchor also rests within the first aperture. The safety chain anchor defines a second aperture. The second aperture receives a safety chain. The safety chain anchor is able to slide in and out of the first aperture.

First claim

The invention claimed is:

1. A safety chain anchor, comprising:
a first section and a second section with the first section defining a first width and the second section defining a second width, wherein the safety chain anchor is configured to couple to a drawbar hanger, the first width is less than the second width to block removal of the safety chain anchor from the drawbar hanger in a first direction, and the first section defines a first aperture configured to receive a safety chain that couples an agricultural implement to the drawbar hanger and defines a second aperture configured to reduce a weight of the safety chain anchor;
wherein the safety chain anchor defines a ledge, and the ledge is configured to contact a pin or bolt to block removal of the safety chain anchor from the drawbar hanger in a second direction, opposite the first direction.

2. The safety chain anchor of claim 1 , wherein the first aperture defines a D-shape.

3. The safety chain anchor of claim 1 , wherein the safety chain anchor is one-piece.

4. The safety chain anchor of claim 1 , wherein the safety chain anchor defines a curved surface between the first section and the second section.

5. A safety chain anchor, comprising:
a first section and a second section with the first section defining a first width and the second section defining a second width, wherein the safety chain anchor is configured to couple to a drawbar hanger, the first width is less than the second width to block removal of the safety chain anchor from the drawbar hanger in a first direction, and the first section defines a first aperture configured to receive a safety chain that couples an agricultural implement to the drawbar hanger;
wherein:
the safety chain anchor defines a curved surface between the first section and the second section and a ledge,
the ledge is configured to contact a pin or bolt to block removal of the safety chain anchor from the drawbar hanger in a second direction, opposite the first direction, and
the curved surface defines a radius of curvature that is less than a radius of curvature of a drawbar hanger portion configured to contact the safety chain anchor.

6. The safety chain anchor of claim 5 , wherein the first section defines a second aperture, and the second aperture is configured to reduce a weight of the safety chain anchor.

7. A safety chain anchor configured to couple to a drawbar hanger, the safety chain anchor comprising:
a first section, the first section defining an aperture configured to receive a safety chain that couples an agricultural implement to the drawbar hanger and defining a groove configured to receive the second section; and
a second section configured to couple to the first section with one or more fasteners, wherein a combined width of the first section and the second section is configured to block removal of the safety chain anchor from the drawbar hanger in a first direction;
wherein the safety chain anchor defines a ledge, and the ledge is configured to contact a pin or bolt to block removal of the safety chain anchor from the drawbar hanger in a second direction, opposite the first direction.

8. The safety chain anchor of claim 7 , wherein the aperture defines a D-shape.

9. The safety chain anchor of claim 7 , wherein the first section has a uniform width.

10. The safety chain anchor of claim 7 , comprising the one or more fasteners, wherein the one or more fasteners are threaded.

11. A safety chain anchor configured to couple to a drawbar hanger, the safety chain anchor comprising:
a first section, the first section defining an aperture configured to receive a safety chain that couples an agricultural implement to the drawbar hanger;
a second section configured to couple to the first section with one or more fasteners, wherein a combined width of the first section and the second section is configured to block removal of the safety chain anchor from the drawbar hanger in a first direction; and
one or more bushings, wherein each bushing of the one or more bushings is configured to be disposed about a respective fastener of the one or more fasteners,
wherein the safety chain anchor defines a ledge, and the ledge is configured to contact a pin or bolt to block removal of the safety chain anchor from the drawbar hanger in a second direction, opposite the first direction.

12. A safety chain system, comprising:
a safety chain anchor configured to be disposed within an aperture of a drawbar hanger, the safety chain anchor comprises a first section and a second section with the first section defining a first width and the second section defining a second width, wherein the first and second sections are positioned on opposite longitudinal sides of the safety chain anchor, the first width of the first section of the safety chain anchor is configured to be less than a width of the aperture of the drawbar hanger to facilitate insertion of the first section into the aperture of the drawbar hanger in a first direction, the second width of the second section of the safety chain anchor is configured to be greater than the width of the aperture of the drawbar hanger to block removal of the safety chain anchor from the drawbar hanger in the first direction, and the first section defines an aperture of the safety chain anchor configured to receive a safety chain that couples an agricultural implement to the drawbar hanger.

13. The safety chain system of claim 12 , wherein the aperture of the safety chain anchor defines a D-shape.

14. The safety chain system of claim 12 , wherein the safety chain anchor is one-piece.

15. The safety chain system of claim 12 , wherein the safety chain anchor defines a curved surface between the first section and the second section.

16. The safety chain system of claim 12 , wherein the curved surface defines a radius of curvature that is less than a radius of curvature of a drawbar hanger portion configured to contact the safety chain anchor.

17. The safety chain system of claim 12 , wherein the safety chain anchor defines a ledge, and the ledge is configured to contact a pin or bolt to block removal of the safety chain anchor from the drawbar hanger in a second direction, opposite the first direction.

18. The safety chain system of claim 12 , wherein the first section of the safety chain anchor defines a second aperture of the safety chain anchor, and the second aperture of the safety chain anchor is configured to reduce a weight of the safety chain anchor.

19. The safety chain system of claim 12 , comprising a drawbar configured to be disposed within the aperture of the drawbar hanger.

Assignees

• Cnh Ind America Llc

Inventors

• Rasset John
• Sietsema Chad

Classifications

• B60D1/28 Primary

  for preventing unwanted disengagement, e.g. safety appliances · CPC title

• B60D1/187

  characterised by the connection to the towing vehicle or to the trailer · CPC title

• B60D1/025 Primary

  comprising release or locking lever pins · CPC title