Pumps – Motor driven – Pump and motor interconnected by endless flexible...
Patent
1987-12-01
1989-07-25
Croyle, Carlton R.
Pumps
Motor driven
Pump and motor interconnected by endless flexible...
417479, 417510, F04B 904
Patent
active
048508179
ABSTRACT:
A mechanical drive system for use in driving a disposable cassette containing a reciprocating fluid pump and active valves from a main pump unit is disclosed which utilizes a single power module cam to drive both the reciprocating pump and the valves. By using a unitary power module cam, the system completely eliminates the possibility of a timing error between the operation of the reciprocating pump and the valves. A one-way clutch is used to prevent the system from slipping into a reverse operation, and the operation of the valve actuators prevents the possibility of free flow through a cassette installed onto the main pump unit.
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Nason Clyde K.
Pelmulder John P.
Croyle Carlton R.
Miller Leslie S.
Pacesetter Infusion, Ltd.
Szczecina Jr. Eugene L.
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