Power actuated lumbosacral backrest
US6013040A · kind A · utility
9Cited by
13References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1997 |
| Grant date | Jan 11, 2000 |
| Priority date | — |
| Expiry date | Sep 22, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61H2201/5053
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A power actuated mechanical backrest apparatus is disclosed. This device is provided to cooperatively interact with the musculature of the human back for the purpose of providing massage action. The device consists of a rigid frame including a movable spindle. The device functions using a movable spindle and a variety of gears to cause various plungers to ride against undulating forms causing the plungers to undulate against the user's back and thereby provide a mechanical massage action. The backrest is overlaid with a cushion material that may be provided with a heating member. The device is small, portable and lightweight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.