Baby calmer
US4819616A · kind A · utility
13Cited by
11References
14Claims
0Family size
Inventor
Key dates
| Filing date | Apr 13, 1987 |
| Grant date | Apr 11, 1989 |
| Priority date | — |
| Expiry date | Apr 13, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2021/0027
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A baby calmer comprises a source of sound adapted to calm a crying baby, with the sound taking the form of random noise or pseudo-random noise which extends over an audio frequency range preferably extending up to at least 10 kilohertz. The pseudo-random noise is generated for a short period at an initial level so that it is able to penetrate the baby's own crying and to attract its attention. The noise is subsequently switched to a lower level to lull the baby into sleep. After a few minutes the sound is switched off altogether.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.