Peristaltic pump with rigid fluoroplastic tubing

Details Peristaltic pump with rigid fluoroplastic tubing Peristaltic pump with rigid fluoroplastic tubing

1995-05-24

1996-01-09

Freay, Charles

Pumps

Expansible chamber type

Elongated flexible chamber wall progressively deformed

4174779, 138119, 138137, 264320, F04B 4308, F04B 4312

Patent

active

054824478

ABSTRACT:
An improved peristaltic pump using a pumptube comprising an inner tube and an outer tube each of rigid fluoroplastic material, preferably polytetrafluoroethylene (PTFE), is provided. The pumping section of the pumptube which contacts the pressure rollers of the peristaltic pump is preformed or shaped into a flattened, oval-like shape which approximately conforms to the pumptube passageway in the peristaltic pump. The pressure rollers contact and compress the flattened side of the pumptube and, thereby, effect the transport or pumping of the fluid. Methods for preparing the pumptubes of this invention are also provided. Corrosive, hot, and/or high pressure fluids can be readily handled using the improved pumptubes and peristaltic pumps provided.

REFERENCES:
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patent: 5390705 (1995-02-01), Brunnhofer
Introduction To Materials Science For Engineers, by James Shackleford, MacMillan Publishing Co., Copyright 1985.

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