Seal configuration for top drive swivel

• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 201 KB
• Volume: 2008
• Category: Article
• ISSN: 1350-4789
• DOI: 10.1016/s1350-4789(08)70275-7

✦ Synopsis

A patent for the zipper of re-closable packages that includes an impressed pattern which is impinged against by the slider is described. This creates an aesthetically pleasing appearance and sound as the closure is operated. A corresponding tactile sensation is also created. A number of variations are proposed.