Rotary buckle structure
US6739022B1 · kind B1 · utility
3Cited by
4References
3Claims
0Family size
Inventor
Key dates
| Filing date | Nov 13, 2002 |
| Grant date | May 25, 2004 |
| Priority date | — |
| Expiry date | Nov 13, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T24/4755
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a rotary buckle structure which includes a buckle member and a rotary member. The bottom of the buckle member and rotary member are respectively coupled by way of a downwardly tapered conical body, and conical hole, and which have the same concentric axis. A length of surface of external circumference is longer than the length of the inner circumference of the conical hole. This arrangement improves the traditional buckle and effectively reduces the wearing to prevent the entire buckle set from loosening or falling off, and thus extends the life of use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.