# US 8,539,675 B2 · Method for manufacturing a tapered stabilizer bar having a continuously changing cross-section

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 8,539,675 B2
- Document ID: US8539675B2
- Status: Granted
- Kind: B2
- Application number: 13/023,272
- Filed: 2011-02-08
- Published: 2011-05-26
- Granted: 2013-09-24
- Earliest claimed: 2006-02-21
- Assignees: Dae Won Kang Up Co., Ltd.
- Applicants: Chan-Gi Jung
- Inventors: Chan-Gi Jung
- Web page: https://patentgrep.com/patent/US8539675B2

## CPC

- B60G 21/055: Stabiliser bars
- B60G 2202/135: Stabiliser bar and/or tube
- B60G 2204/1224: End mounts of stabiliser on wheel suspension
- B60G 2206/81022: by forging
- B60G 2206/8109: by rolling
- Y10T 29/49622: Vehicular structural member making
- B60G: VEHICLE SUSPENSION ARRANGEMENTS (air-cushion vehicles B60V; {cycle suspensions B62K25/00})
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A method for manufacturing a stabilizer bar for a vehicle includes cutting a stabilizer bar material having a round bar-shaped configuration, heating both end portions of the cut stabilizer bar material to be formed as leg bars of the stabilizer bar, rolling both side surfaces of each of both heated end portions of the stabilizer bar material so that both side surfaces are tapered, rotating the stabilizer bar material about an axis thereof between rollers to taper both remaining non-rolled side surfaces of each of both end portions of the stabilizer bar material to be formed as the leg bars of the stabilizer bar, so that each or both end portions of the stabilizer bar material has an elliptical cross-section, forming eyes on distal ends of the stabilizer bar material, and bending the stabilizer bar material into the shape of the stabilizer bar.

## Claims

### Claim 1

A method for manufacturing a stabilizer bar for a vehicle, comprising the steps of:
cutting a stabilizer bar material having a round bar-shaped configuration;
heating end portions of the cut stabilizer bar material which are to be formed as leg bars of the stabilizer bar;
rolling side surfaces of each of the heated end portions of the stabilizer bar material between rollers so that the side surfaces are tapered;
rotating the stabilizer bar material about an axis thereof between the rollers to taper remaining non-rolled side surfaces of the end portions of the stabilizer bar material which are to be formed as the leg bars of the stabilizer bar, so that the end portions of the stabilizer bar material have an elliptical cross-section;
forming eyes on distal ends of the stabilizer bar material through forging the distal ends of the stabilizer bar material; and
bending the stabilizer bar material into the shape of the stabilizer bar.

### Claim 2 (depends on 1)

The method as set forth in claim 1, wherein the stabilizer bar material having the round bar-shaped configuration is cut to have a length shorter than a final length of the stabilizer bar material, the final length being longer due to the rolling of the end portions of the stabilizer bar material.

### Claim 3 (depends on 1)

The method as set forth in claim 1, wherein each of the end portions of the stabilizer bar material, which are rolled as the leg bars of the stabilizer bar having the elliptical cross-section, is bent in order to have a major axis extending in a direction in which to support a load when applied to the distal end of each leg bar due to vibration of a vehicle body.