Vent plug
US8734573B2 · kind B2 · utility
5Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2010 |
| Grant date | May 27, 2014 |
| Priority date | — |
| Expiry date | Apr 1, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S45/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An object is to provide a vent plug having a structure in which an air-permeable membrane is unlikely to be damaged. More specifically, a vent plug is produced, which includes: a cylindrical member 1 having a through-hole 1a; a support 2 connected to the cylindrical member 1 so as to be across the through-hole 1a; and an air-permeable membrane 3 circumferentially attached to the cylindrical member 1, wherein the air-permeable membrane 3 is held on the support 2 and a convex portion 3a that follows the shape of the support 2 is formed on the air-permeable membrane 3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.