Clamp for regulating fluid flow through plastic tubing
US4013263A · kind A · utility
Inventor
Key dates
| Filing date | Dec 24, 1975 |
| Grant date | Mar 22, 1977 |
| Priority date | — |
| Expiry date | Dec 24, 1995 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M39/286
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Tubing through which fluid flow is to be regulated is placed in a regulating clamp wherein it is clamped between a roller wheel and a surface having a variable cross-sectional area channel extending therealong. This surface is parallel to the travel path of the wheel, and thus there is a constant separation distance between these two elements for all wheel positions. Flow rate through the tubing is changed by longitudinal adjustment of the position of the roller wheel, the ratio of the portion of the tubing which is clamped between the wheel and the surface to that which is not clamped and over the channel, thereby being varied. A plurality of ridge elements are formed in the surface and act to locally pinch or grip the tubing at discrete intervals, thereby substantially lessening creep of the plastic tubing which, in turn, minimizes the flow rate change once the clamp has been set for the desired rate of flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.