Methods and apparatus for measuring body composition
US5595189A · kind A · utility
9Cited by
7References
25Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 7, 1995 |
| Grant date | Jan 21, 1997 |
| Priority date | — |
| Expiry date | Jun 7, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/6888
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system for measuring body fat percentage is disclosed. The system relies upon the measurement of a subject's weight in two gases of different densities. The difference in weight, along with the difference in atmospheric density, is used to determine the subject's density. Implementing Archimedes' principle of binary mixtures, this figure is used to determine the proportion by weight of fat in the subject. The weight of the subject is measured with a precision balance. The density of the gas is determined with an ultrasonic probe that senses the change in sonic velocity, which is related to the density of the atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.