FIREFLY PUMP-METERING SYSTEM

• US 3,615,241 A
• Filed: 02/27/1970
• Issued: 10/26/1971
• Est. Priority Date: 02/27/1970
• Status: Expired due to Term

• Current Assignee: Chris J. Plakas, George M. Low, N/a,
• Original Assignee: Chris J. Plakas, George M. Low, N/a,
• Inventors: Plakas, Chris J., Low, George M., N/a,
• Primary Examiner(s): Wolk, Morris O.
• Assistant Examiner(s): Serwin, R. E.
• Application Number:
  US05/015,022
• Time in Patent Office: 606 Days
• Field of Search: 23/259,253 73/425.6 222/71,135,309 141/23 195/127
• US Class Current: 422/81
• CPC Class Codes: G01N 1/38 Diluting, dispersing or mixing samples

Abstract

A pumping and metering dual piston system for simultaneously injecting controlled amounts of sample and reactants into a reaction chamber and an enzyme into an adjacent injection chamber. A rotary shaft is actuated to communicate the injection chamber with the reaction chamber and to actuate a mechanism for forcing the enzyme from the injection chamber to the reaction chamber. Additionally, the shaft supports and operatively rotates detector apparatus from a magnetic and light radiation shielded position to a position for monitoring the reaction chamber constituents.

Claims

2. The structure of claim 1, wherein said automatically actuable means comprises a rotatable shaft and said valve means comprises a groove conduit in said shaft.

3. The structure of claim 1, and further including a radiation shielded housing containing a pivotally mounted detector means, said automatic actuable means being so constructed and arranged to open said valve means, activate said pumping means and pivot said detector means into registration with said reaction chamber.

4. The structure of claim 1, wherein said pumping means includes a coil spring surrounding said shaft, a spring retainer slidably receiving said shaft and retaining said coil spring initially in compression, latching means initially precluding motion of said retainer means, said automatically actuable means adapted to release said latching means permitting expansion of said coil spring for transferring said reagent, said adjustment nut adapted for engagement on said spring retainer.

5. The structure of claim 1 and further including a first distribution manifold providing communication between said sample-storing means and said reaction chamber and a second distribution manifold providing communication between said reagent-storing means and said injection chamber.

6. The structure of claim 5 and further including an automatically actuable distribution valve operatively associated with said sample-storing means and said reagent-storing means for simultaneously supplying sample and reagent to said manifolds.