Magnetically actuated flexible tube pump

Details Magnetically actuated flexible tube pump Magnetically actuated flexible tube pump

1997-06-12

2000-04-18

Freay, Charles G.

Pumps

Motor driven

Electric or magnetic motor

417 53, 417478, 921701, 251 611, 25112901, F04B 4300

Patent

active

06050787&

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.

REFERENCES:
patent: 1498010 (1924-06-01), Bellman
patent: 3792720 (1974-02-01), Robbins
patent: 4449893 (1984-05-01), Beckman et al.
patent: 4452572 (1984-06-01), Evrard
patent: 5147185 (1992-09-01), Niehaus et al.
patent: 5671905 (1997-09-01), Hpkins et al.

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