Power supply for vibrating furniture
US5730707A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 8, 1996 |
| Grant date | Mar 24, 1998 |
| Priority date | — |
| Expiry date | Apr 8, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61H2201/5007
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A vibration producing system for use in vibratory furniture and including first and second vibrator motors for producing vibrations upon being energized, a full wave rectifier having input terminals connected to the power supply and a pair of output terminals for providing full wave rectified current. A first switch has a first mode for connecting the first vibrator motor to the output terminals, a second mode for connecting the vibrator motor to the rectifying means so that the first vibrating means receives alternate half waves of the alternating current having a first polarity and a third mode for open circuiting the first vibrator motor. A second switch has a first mode for connecting the second vibrator motor to the output terminals, a second mode for connecting the second vibrator motor to the rectifying means so that the second vibrator motor receives alternate half waves of the alternating current having a second polarity, and a third mode for open circuiting the second vibrator motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.