Weight, volume or density measuring system
OwnerJames M. Stuartinventor
Life of this patent
Estimating the term…
Abstract
Apparatus for determining the weight, density or volume of a solid body and the weight and density of a liquid. The apparatus comprises a capacitive transducer means and compensating means therefor, as well as electronic circuitry comprising computing means including memory means, calculating means, control means and digital display means. Methods of determining the weight, density or volume of solids and the weight and density of liquids are also disclosed.
Claims17
Scientific apparatus for automatically determining either the weight, volume or density of an unknown solid or liquid material comprising a housing including scale means having a housing including a platform for receipt of said unknown material thereon and for measuring the weight of said material, computing means, display means, variable capacitance means coupled to said platform and to said computing means and means for compensating for variations in said variable capacitance means caused by temperature variations or changes in the dielectric of said capacitance means caused by changes in the ambient atmosphere, said computing means including memory means, calculating means and control means, said memory means being coupled to the calculating means and the control means for automatically calculating the density of said material, whereupon said display means displays said calculated density.
An electronic scale comprising:
- platform means arranged to move upon receipt of some material thereon, support means for said platform means, variable capacitance means coupled to said platform means for providing a first electrical signal indicative of the amount of movement of said platform, fixed capacitance means for providing a second electrical signal dependent upon dielectric changes caused by the ambient atmosphere, temperature responsive means for providing a third electrical signal dependent upon ambient temperature and means for receiving said first, second and third signals for providing a fourth signal indicative of the weight of said material.
Dependencies are inferred from the claim text.