Pumps – Expansible chamber type – Elongated flexible chamber wall progressively deformed
Patent
1979-09-17
1982-02-16
Freeh, William L.
Pumps
Expansible chamber type
Elongated flexible chamber wall progressively deformed
F04B 4312, F04B 4508
Patent
active
043157181
ABSTRACT:
A peristaltic pump having a nonmetallic housing supporting an internal rotor which carries compression rollers for cooperation with a compressible flow tube looped internally of the housing so as to effect a peristaltic pumping action on the tube during rotation of the rotor. The rotor is of unitary construction and is made from a nonmetallic material. The rotor contains hub projections which are directly journaled within bearing surfaces formed within the housing, and rotatably suports at least one nonmetallic compression roller through a tubular open ended metal support shaft which enables air flow through the support tube to provide improved heat transfer during operation.
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patent: 4211519 (1980-07-01), Hogan
Cole-Parmer Instrument Company
Freeh William L.
LandOfFree
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