Methods for manufacturing a diaphragm for an air admittance valve
US7410608B1 · kind B1 · utility
6Cited by
24References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 19, 2007 |
| Grant date | Aug 12, 2008 |
| Priority date | — |
| Expiry date | Sep 19, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8122
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In some embodiments, a process for manufacturing a diaphragm for an air admittance valve includes disposing a first center disk into a first cavity of a first mold, the first center disk includes a hollow stem. A material is provided into the first mold, through the hollow stem and laterally outwardly beyond a perimeter of the first center disk. The material is allowed to harden to form a lateral membrane coupled to the first center disk and extending laterally beyond a perimeter of the first center disk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.