SPRING ATTACHMENT TOOL FOR AIR BRAKE SHOES

• US 20120204392A1
• Filed: 02/09/2012
• Published: 08/16/2012
• Est. Priority Date: 02/14/2011
• Status: Active Grant

• Current Assignee: Ole Luangphon
• Original Assignee: Ole Luangphon
• Inventors: Luangphon, Ole
• Granted Patent: US 8,931,150 B2
• Time in Patent Office: Days
• US Class Current: 29/225
• CPC Class Codes: B25B 27/306 by tensioning coil springs
• CPC Class Codes: Y10T 29/53613 Spring applier or remover
• CPC Class Codes: Y10T 29/53943 Hand gripper for direct push or pull

Abstract

A tool for attaching and disengaging a return spring in a truck brake assembly comprises a handle, a shaft, and an arm with a hook and a smaller reverse hook. The hook provides leverage around the spring retainer and the reverse hook engages the spring end to move it into place.

Claims

1. A tool for attaching a return spring to a brake assembly, comprising a handle, a shaft extending from the handle, an arm extending at approximately a right angle from a distal end of the shaft, a first hook extending from the arm in a plane perpendicular to the shaft, and a short hook in a reverse direction from the first hook.

2. The tool of claim 1 wherein the orientation of the short hook is rotated slightly in a direction away from the handle.

3. The tool of claim 2 wherein the orientation of the short hook is rotated between about five degrees and about ninety degrees in a direction away from the handle.

4. The tool of claim 2 wherein the orientation of the short hook is rotated between about thirty degrees and about sixty degrees in a direction away from the handle.

5. The tool of claim 2 wherein the orientation of the short hook is rotated about forty-five degrees in a direction away from the handle.

6. The tool of claim 1 wherein the shaft is about 6 inches long, the first arm is about 2½

inches long, leading to the first hook having about a ½

inch radius of curvature, and the short hook has about a ¼

inch radius of curvature.

7. The tool of claim 2 wherein the shaft is about 6 inches long, the first arm is about 2½

inches long, leading to the first hook having about a ½

inch radius of curvature, and the short hook has about a ¼

inch radius of curvature.

8. The tool of claim 3 wherein the shaft is about 6 inches long, the first arm is about 2½

inches long, leading to the first hook having about a ½

inch radius of curvature, and the short hook has about a ¼

inch radius of curvature.

9. The tool of claim 1, comprising a single ⅜

inch steel rod.

10. The tool of claim 2, comprising a single ⅜

inch steel rod.

11. The tool of claim 3, comprising a single ⅜

inch steel rod.

12. A tool for attaching a return spring to a brake assembly, comprising a ⅜

inch steel rod comprising a handle, a shaft extending about 6 inches from the handle, an arm extending about 2 ½

inches at approximately a right angle from a distal end of the shaft, a first hook having about a ½

inch radius of curvature extending from the arm in a plane perpendicular to the shaft, and a short hook in a reverse direction from the first hook, having about a ¼

inch radius of curvature and an orientation rotated about 45 degrees in a direction away from the handle.