Passive noise canceling device
US10271994B2 · kind B2 · utility
1Cited by
4References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 25, 2016 |
| Grant date | Apr 30, 2019 |
| Priority date | — |
| Expiry date | Sep 4, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F11/085
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A device for use by a dental patient fits in the patient's ear and has at least one curved resonator tube to reduce the perceived volume of a dental drill. The device can have multiple layers of resonator tubes and a port into which recorded music can be played to calm the patient further.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.