Magnetically actuated flexible tube pump
US6050787A · kind A · utility
Inventor
Key dates
| Filing date | Jun 12, 1997 |
| Grant date | Apr 18, 2000 |
| Priority date | — |
| Expiry date | Jun 12, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B43/067
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A flexible tube pump, reference FIG. 2, having an elastic tube 1, compounded with a magnetically responsive material, stretched onto the surface of shaft 2 to provide a seal between the contacting surfaces. A magnetic field is applied concentrically to tube 1 which expands circumferentially away from shaft 2, but only locally to the field, the region outside the influence of the magnetic field however maintains the tube 1 to shaft 2 seal. The expansion of tube 1 forms volume 7. Repetitive movement of said magnetic field in direction of arrow 6 provides moving closed volumes giving pumping action, suitable as a dry, low pressure, pump, e.g. a vacuum pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.