Back massager for use in home or auto
US5020517A · kind A · utility
33Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1989 |
| Grant date | Jun 4, 1991 |
| Priority date | — |
| Expiry date | Nov 13, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S297/03
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A back massager is powered through a control unit attached to a back cushion via a cable. The control unit has a jack coupled to a control circuit and through the cable to the cushion. Either an AC adapter or a 12 DC battery adapter may be plugged into the jack. Therefore, the same massager may be used in the home or an automobile (or the equivalent thereof). An air bladder may be pumped up or exhausted to control the firmness of the cushion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.