Measuring and testing – Specific gravity or density of liquid or solid – With weighing feature
Patent
1987-04-03
1989-10-17
Chapman, John
Measuring and testing
Specific gravity or density of liquid or solid
With weighing feature
G01N 908
Patent
active
048738662
ABSTRACT:
The invention is a method of hydrostatic weighing of a human body and a kit for use in hydrosatic weighing. The method comprises filling with water and closing a container which the person being weighed can grasp, having the person being weighed grasp the filled and closed container and sink himself in a pool of water, remove from the container a quantity of water just sufficient to suspend himself between the bottom of the pool and its surface when he has exhaled as much air as possible from his lungs, determine the weight of water needed to refill the container and determining the density of the water, e.g., by taking its temperature. The kit comprises a container with a screw cap which is capable of being grasped by a person being hydrostatically weighed, a graduated cylinder for determining the weight of the water required to refill the container after it has been adjusted by removal of water to suspend the person in water, a weight which is necessary if the person being weighed floats in water, and a thermometer to determine the density of the water being used for the hydrostatic weighing. A nose clip and data sheet may be included in the kit, if desired.
REFERENCES:
patent: 3045496 (1962-07-01), Kraus
patent: 4144749 (1979-03-01), Whitmore
patent: 4184371 (1980-01-01), Brachet
patent: 4753307 (1988-06-01), Muehlenbein
J. H. Wilmore et al., "An Anthropometic Estimation of Body Density and Lean Body Weight in Young Men," Journal of Applied Physiology, vol. 27, No. 1, Jul. 1969, pp. 25-31.
J. H. Wilmore et al., "Predictability of Lean Body Weight Through Anthropometic Assessment in College Men," Journal of Applied Physiology, vol. 25, No. 4, Oct. 1968, pp. 349-355.
Chapman John
Mortimer George H.
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