Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1974-07-16
1976-02-10
Smith, Alfred E.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
204195R, 215247, G01N 2707
Patent
active
039380351
ABSTRACT:
A flask having a threaded neck and a cap adapted for threaded engagement on the neck. A laminated disc between the cap and the neck forms a gas tight seal and the cap has a central opening that exposes a medial region of the disc. Piercing the disc through the opening are two electrodes, the inner ends of which contact the sample within the flask and the outer ends of which afford connection of test equipment thereto. Cylindric glass tubes are fitted over the external portion of the electrodes to provide physical support therefor; silicone rubber or the like serves to retain the glass cylinders in place and form a gas tight seal between the cylinders and the electrodes. Shrinkable tubing is shrunk over the glass tubes to afford further mechanical support and sealing. A final relatively large diameter shrinkable tube is shrunk over both electrodes and their associated glass cylinders. The support and sealing means for the elctrodes is confined to a limited portion of the medial region of the disc so that the remainder of such region can be punctured by a hollow needle to introduce a test sample within the flask.
REFERENCES:
patent: 2135386 (1938-11-01), Crabbe
patent: 3760969 (1973-09-01), Shimamoto et al.
patent: 3784453 (1974-01-01), Dworkin et al.
Adamson Michael J.
Fassbender Alexander G.
Fletcher James C. Administrator of the National Aeronautics and Space
Gilbreath William P.
Brekke Darrell G.
Manning John R.
Morin, Sr. Armand G.
Punter Wm. H.
Smith Alfred E.
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