Tubing pinch valve device
US5197708A · kind A · utility
43Cited by
4References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 11, 1992 |
| Grant date | Mar 30, 1993 |
| Priority date | — |
| Expiry date | Aug 11, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K7/061
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pinch valve is provided for controlling the flow in a flexible wall tube. The valve includes a slotted saddle with female threading to receive a male threaded stem which is actuated within the saddle by a knob integrally connected to the stem. The slotted saddle may be installed onto an existing tube run without requiring disconnection. The stem has a spherical tip which contacts the tube to collapse to decrease the area flow therethrough. The knob and saddle are closely fitted to prevent spreading of the saddle during high thread loads. Calibration is also provided so that a desired flow control can be repeated with accuracy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.