Circular slide rule suitable for use in determining the electrol

Details Circular slide rule suitable for use in determining the electrol Circular slide rule suitable for use in determining the electrol

1975-10-02

1977-05-31

Weldon, Ulysses

Registers

Calculators

Tabular

235 78R, G06C 300

Patent

active

040264637

ABSTRACT:
A circular slide rule is provided suitable for use in a method determining the electrolyte deficiency in the extra-cellular space from the measured electrolyte deficiency per volume of serum, body weight and body height, and is a method of determining electrolyte deficiency therewith. The circular slide rule comprises a basic disc, a centrally rotatable first rotary disc supported on one side of the basic disc but having a smaller diameter than the basic disc and a centrally rotatable second rotary disc supported on the side of the basic disc opposite to that of the first rotary disc but having a diameter smaller than that of the basic disc. Substantially straight cursors are also provided, each being rotatably supported on one of the rotary discs relative to the appropriate rotary disc and with respect to the basic disc, each said cursor extending at least to the circumference of the basic disc.

REFERENCES:
patent: 1207439 (1916-12-01), Picolet
patent: 1338588 (1920-04-01), Prescott
patent: 1849058 (1932-03-01), Dempster

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