Pinch valve device
US4588159A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1983 |
| Grant date | May 13, 1986 |
| Priority date | — |
| Expiry date | Nov 30, 2003 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K7/06
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pinch valve device comprising a nipping element having a pair of nipping portions adapted to be brought nearer to and apart from each other and to nip a resilient tube therebetween when brought nearer with each other to thereby close a passage in the tube, and a stop element adapted to stop at least one of the nipping portions, tended to be apart from each other by the resilient repulsion of the resilient tube, at a predetermined spacing allowing to close the passage in the resilient tube when the nipping portions are brought nearer to each other than the predetermined spacing against the resilient repulsion of the resilient tube can surely close the passage in the resilient tube and reduce the degradation of the tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.