Variable speed hydromassage pump control
US5151017A · kind A · utility
71Cited by
4References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 15, 1991 |
| Grant date | Sep 29, 1992 |
| Priority date | — |
| Expiry date | May 15, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B2207/044
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A control for a hydromassage pump motor and pump controls the speed thereof at one of a plurality of predetermined speeds. The control includes a high voltage motor power control which is connected to the AC lines and to the motor to affect energization thereof and a low voltage user interface. The low voltage user interface is powered by a low cost, small, limited energy power supply which limits the current to the user interface and which provides electrical isolation from the AC lines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.