| DONG YANG PHYSICAL & CHEMICAL Patent applications |
| Patent application number | Title | Published |
|---|
| 20100289199 | PROTECTIVE TUBE FOR COIL SPRING OF VEHICLE SUSPENSION DEVICE - Disclosed is a protective tube for a coil spring of a vehicle suspension device. The protective tube includes a cut-out portion through which the coil spring is fitted therein. The cut-out portion has a pair of upper and lower outwardly protruding wings. The wings are joined to each other by high-frequency welding. The protective tube prevents foreign materials from entering the cut-out portion. In addition, the protective tube is easy to manufacture by molding. | 11-18-2010 |
| 20100252971 | PROTECTIVE TUBE FOR COIL SPRING OF VEHICLE SUSPENSION DEVICE - Disclosed is a protective tube for a coil spring of a vehicle suspension device. The protective tube includes a cut-out portion through which the coil spring is fitted therein. The cut-out portion has a pair of upper and lower outwardly protruding wings. The wings are joined to each other by high-frequency welding. The protective tube prevents foreign materials from entering the cut-out portion. In addition, the protective tube is easy to manufacture by molding. | 10-07-2010 |
