Device for controlling the opening and closing of a clamp in a positive displacement pump
US8109898B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 26, 2007 |
| Grant date | Feb 7, 2012 |
| Priority date | — |
| Expiry date | Jul 18, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/702
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A device for controlling the opening and closing of a clamp intended to seal a flexible tube, for example in a positive displacement pump, includes: a housing that can be closed with a door; a tube placed inside the housing; a clamp also placed in the housing, which cooperates with the tube to open or seal it. The clamp is closed when the door is being opened and when the door is being closed. As well as ensuring that the tube is always closed when the door is being opened, the inventive safety device also ensures that the tube remains closed once the door has been closed as long as a suitable device does not trigger the opening of the clamp. The fully mechanical closure device is not exposed to the dangers of a faulty power supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.