Vibrator massager using beat frequency
US4570616A · kind A · utility
53Cited by
6References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1985 |
| Grant date | Feb 18, 1986 |
| Priority date | — |
| Expiry date | Feb 19, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18344
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An improved therapeutic vibration device using dual motors and rotating discs having eccentric weights. The rotating discs have slightly different effective diameters and are mutually frictionally connected by either providing the rims thereof with a different number of gear teeth or with an elastomeric or other friction material. A vibrational device having such separated motors can be enclosed in a cushion or pillow for convenient use by an individual.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.