Fluid storage device

Details Fluid storage device Fluid storage device

1980-02-25

1981-08-04

Stephan, Steven L.

Pipes and tubular conduits

With pressure compensators

Freeze protecting

E03B 710

Patent

active

042816874

ABSTRACT:
A pump for precise, smooth delivery of liquid, particularly in liquid chromatography systems, featuring two liquid displacement elements mounted for reciprocating movement in chambers connected in series with two check valves, one displacement element serving to accumulate some of the liquid delivered by the first element and to deliver the accumulated liquid while the first element is refilling. Also disclosed is a fluid storage device for smoothing pulses from the pump comprising a flattened tube wound into a helix and placed within an annulus formed by an inner and an outer cylindrical wall. These cylindrical walls maintain the flattened tubing from expanding beyond its elastic strain limit.

REFERENCES:
patent: 1958009 (1934-05-01), McKee
patent: 3329093 (1967-07-01), Bear
patent: 3348578 (1967-10-01), Mercer
patent: 3855129 (1974-12-01), Abrahams et al.
Model 6000A Solvent Delivery System, Waters Associates, Inc., Pamphlett Published 5/78.

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