Pinch valve and method for fabrication
US3982723A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1974 |
| Grant date | Sep 28, 1976 |
| Priority date | — |
| Expiry date | Mar 28, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49879
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve body having a circular cylindrical shape may be made of plastic or any other suitable material. A radial hole through the wall of the body has a pressure inlet fitting positioned therein. A flexible tubing is passed through the body co-axial therewith. The tubing is folded back to overlie the ends of the valve body and a valve end tube is positioned to overlie the folded back ends of the flexible tubing. Clamps are utilized to impart inward radial pressure about the circumference of the valve end tube overlying the folded back tubing. The valve end tube is adapted to receive the ends of an inlet and an outlet flow conduit. Pressure of varying magnitude introduced through the pressure inlet fitting serves to meter the fluid flow through the conduit from a full flow to substantially zero flow as the flexible tube distends into the passage through the valve body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.