Butterfly valve
US5152501A · kind A · utility
27Cited by
5References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 21, 1991 |
| Grant date | Oct 6, 1992 |
| Priority date | — |
| Expiry date | Nov 21, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K1/2265
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
There is disclosed a butterfly valve having a stem which extends through a disc rotatable within a seat about an annular hub to open and close the valve. The stem and disc have flat sides which engage one another in order to rotate the disc within the stem, and outer end of the stem is releasably retained in a bore through a neck on the hub.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.