Pumps – Motor driven – Fluid motor
Patent
1994-03-01
1996-08-20
Gluck, Richard E.
Pumps
Motor driven
Fluid motor
417395, 417DIG1, F04B 908
Patent
active
055473512
ABSTRACT:
A diaphragm pump which provides a low internal volume and minimizes volume contributions for applications which require the transfer of fluid volumes on the order of one to several microliters. The pump includes a plunger which reciprocates within a bore and applies fluid pressure to a diaphragm of a head cavity that is connected to the cylinder bore. Hydraulic feed and vent passages connect to the cylinder bore at a point where the end of the plunger passes during reciprocal movement to ensure that the amount of hydraulic fluid within the cylinder bore is consistent during each stroke of the plunger. The pump is particularly useful for supplying receptor media to a Franz cell.
REFERENCES:
patent: 862867 (1907-08-01), Eggleston
patent: 2303597 (1942-12-01), Adelson
patent: 2843045 (1958-07-01), Mashinter
patent: 3212411 (1965-10-01), Storms
patent: 3233554 (1966-02-01), Huber et al.
patent: 3779669 (1973-12-01), Sommer
patent: 4688999 (1987-08-01), Ames
patent: 5186615 (1993-02-01), Karliner
patent: 5246351 (1993-09-01), Horn et al.
patent: 5249932 (1993-10-01), Van Bork
Cole-Parmer Instrument Company, Catatog 1985-1986 pp. 554-556.
Gluck Richard E.
The United States of America as represented by the Secretary of
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