Peristaltic pump

Details Peristaltic pump Peristaltic pump

1994-08-05

1995-11-21

Bertsch, Richard A.

Pumps

Expansible chamber type

Elongated flexible chamber wall progressively deformed

4174779, 138119, F04B 4308

Patent

active

054681294

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:
patent: 2804023 (1957-08-01), Lee
patent: 3105447 (1963-10-01), Ruppert
patent: 4158586 (1979-06-01), Usui
patent: 4275761 (1981-06-01), Waldhauser
patent: 4650471 (1987-03-01), Tamari
patent: 4661045 (1987-04-01), Winston et al.
patent: 4800109 (1989-01-01), Washizu
patent: 4948643 (1990-08-01), Mueller
patent: 5040955 (1991-08-01), Knutson
patent: 5067879 (1991-11-01), Carpenter
patent: 5390705 (1995-02-01), Bronnhofer

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