LIQUID PUMP

PURPOSE:To reduce slidable frictional resistance by providing additionally rotors in a part of a finger member contacting a device cam when a plurality of finger members are driven by the drive cam to shift the closing point of a liquid transfer tube for blood transfusion or the like. CONSTITUTION:A...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MIHASHI NAOTO, OMURA TAKAFUMI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY HEATING HUMAN NECESSITIES HYGIENE LIGHTING MECHANICAL ENGINEERING MEDICAL OR VETERINARY SCIENCE POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE:To reduce slidable frictional resistance by providing additionally rotors in a part of a finger member contacting a device cam when a plurality of finger members are driven by the drive cam to shift the closing point of a liquid transfer tube for blood transfusion or the like. CONSTITUTION:A plurality of finger member bodies 1 are disposed opposedly to a liquid transfer tube for blood transfusion or the like to receive respectively drive cams 3 in the cam holes 2. A shaft hole 4 in the eccentric position of the drive cam 3 is attached to the motor shaft 5 of a drive motor. Then, a plurality of rotors 6a, 6b are additionally provided rotatably in a plurality of receivers 7a, 7b respectively to make contact with the peripheral edge of the drive cam 3. The respective rotors 6a, 6b are rotated as the drive cam 3 is rotated so that the slide frictional resistance of the drive cam 3 is reduced. Thus, the loss of a pump driving force due to the slide frictional resistance is reduced.