Universal type butterfly valve and manufacturing process for same
US4653724A · kind A · utility
13Cited by
10References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1985 |
| Grant date | Mar 31, 1987 |
| Priority date | — |
| Expiry date | Sep 13, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K1/2265
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The invention concerns a butterfly valve of a type wherein the elastomer sleeve lines the body bore, and has cheeks which fit into circular recesses provided in the two parallel radial faces of the valve, the shape of the cheeks and of the circular recesses being such that when the valve is assembled between flanges, the elastomer of the cheeks is pressed into a spare volume in the circular recesses and precludes any creep of the elastomer towards the core of the sleeve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.