Extruded monolithic foam earplug
US6408981B1 · kind B1 · utility
48Cited by
19References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2000 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Sep 27, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2793/0063
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A monolithic earplug being compressible or deformable. The earplug is fabricated from an extruded, elastomeric thermoplastic in order that it may be rapidly and efficiently produced, and then the extrudate is cut at the die face, as it emerges therefrom, into discrete pieces to form earplugs having convex end portions and a skin extending over its entire outer surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.