Pumps – Expansible chamber type – Elongated flexible chamber wall progressively deformed
Patent
1998-04-03
2000-08-15
Walberg, Teresa
Pumps
Expansible chamber type
Elongated flexible chamber wall progressively deformed
417474, 417 63, 4174771, 4174773, 4174774, 4174776, 604 67, 604 93, 604253, F04B 4308
Patent
active
061026786
ABSTRACT:
The invention is a peristaltic pump having a particularly simple construction and a low axial bulk.
The pump (1) includes a rotor (20) having rollers (21,22,23) which roll against a tube (14) containing the liquid to be pumped. The compression of the tube presses the rollers against the circular peripheral surface (35) of a central vibrating stator (32) in the form of a disc or ring, which guides the rollers and causes them to turn. The stator (32) is set in vibration by piezoelectric means and vibrates by extension in its radial plane following a progressive wave. The chassis (24) of the rotor is devoid of a central drive shaft.
Such a peristaltic pump is notably useful in the medical domain, in machines to be worn by a patient or implanted in the body of a human being or animal.
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Fastovsky Leonid
Kingham Curtis D.
Medtronic Inc.
Patton Harold R.
Walberg Teresa
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