Pumps – Correlated pump and motor or clutch control – Pump distributor control
Patent
1975-10-24
1977-12-27
Freeh, William L.
Pumps
Correlated pump and motor or clutch control
Pump distributor control
417342, 417507, 417515, 128214F, F04B 908, F04B 3502
Patent
active
040652300
ABSTRACT:
A reciprocating infusion pump is presented having a pair of syringes activated by individual actuating cylinders. The actuating cylinders are interconnected with a hydraulic fluid, and the cylinders and alternately pneumatically actuated whereby the cylinders alternately act as drive and follower cylinders whereby one syringe delivers fluid to a patient while the other is refilled from a reservoir. A directional adapter set is affirmatively actuated in synchronism with the actuating cylinders to control the direction of fluid flow from the reservoir to the syringes and from the syringes to the patient.
REFERENCES:
patent: 2565255 (1951-08-01), Morine
patent: 2843050 (1958-07-01), Harper
patent: 2998781 (1961-09-01), Triebel
patent: 3205906 (1965-09-01), Wilkinson
patent: 3451393 (1969-06-01), Sarnoff
patent: 3474965 (1969-10-01), Coleman
patent: 3516761 (1970-06-01), Scooggins
patent: 3536451 (1970-10-01), Ludwin
patent: 3554673 (1971-01-01), Schwartz
patent: 3718409 (1973-02-01), Brandenberg
patent: 3731679 (1973-05-01), Wilhelmson
Freeh William L.
Hart Associates, Inc.
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