Positioning structure of retractable draw bar for a suitcase
US6292979A · kind A · utility
24Cited by
3References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 21, 2000 |
| Grant date | Sep 25, 2001 |
| Priority date | — |
| Expiry date | Jun 21, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/60
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The present invention proposes a positioning structure of a retractable draw bar, wherein an extended sheet is formed at the upper edge of each of the retaining holes of the first joint tube to increase the area of the upper edge of the retaining hole. When the retaining buttons of the positioning seat is fastened in the retaining holes and bear an upward force, the contact area of the upper edges thereof will be larger. Therefore, the retaining buttons can bear larger load so that they will not break or be damaged because of large shearing force. The lifetime can thus be greatly increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.