Mold for forming a hearing protective device
US7731487B2 · kind B2 · utility
13Cited by
26References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2006 |
| Grant date | Jun 8, 2010 |
| Priority date | — |
| Expiry date | Feb 17, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/812
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A mold for forming a foam earplug including a lower mold portion including a lower cavity; and an upper mold portion including an upper cavity and a means for venting a gas during a rising of the foam, wherein the lower and upper mold portions are engageable so as to communicably engage the lower and upper cavities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.