| 摘要 |
A one-piece fastening device to join sheet materials is disclosed. The device is composed of three flat elements 20, 21, 22 connected by integrally molded hinges. There are ports or openings on the outer elements which will engage openings or posts on the center element. Sheet materials can be fastened together by placing the materials between the elements and engaging the posts through the openings. <IMAGE> |
