Butterfly valve
US5531248A · kind A · utility
10Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 19, 1995 |
| Grant date | Jul 2, 1996 |
| Priority date | — |
| Expiry date | Jan 19, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86863
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A butterfly valve having a plastic body with a one-piece valve member formed of thermoplastic elastomer with an integral hub with torque transmitting surfaces which are engaged by lugs on a rigid shaft received in the hub and the shaft is journalled for rotation in the valve body. The valve member has integral thin blade portions extending in opposite directions from the hub with a thickened rim formed about the periphery of the blade with the edge of the rim preferably chamfered. The preferred butterfly member has integral stiffening ribs extending centrally from the hub along the blades to the rim.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.