Vent valve of an air pump
US4099544A · kind A · utility
2Cited by
3References
3Claims
0Family size
Inventors
Key dates
| Filing date | Feb 4, 1977 |
| Grant date | Jul 11, 1978 |
| Priority date | — |
| Expiry date | Feb 4, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7892
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A vent valve of an air pump for charging air into a fish bowl which comprises a separator wall having an insertion vent hole, a valve body made of a silicone rubber and consisting of a disc-shaped tongue section having a semi-circular portion of a small diameter for closing said insertion vent hole and an annular disc-shaped fixed section of a large diameter connected to the base portion of said tongue section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.