Temperature control device for fluid filled pad
US5183039A · kind A · utility
48Cited by
14References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 23, 1991 |
| Grant date | Feb 2, 1993 |
| Priority date | — |
| Expiry date | Aug 23, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2007/0054
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A control circuit for a fluid-filled heating pad is described. The control circuit is unique in that it includes a thermistor that is located in close proximity to the heating pad. The circuit is also unique in that it includes a single high-precision reference resistor to self-calibrate the control circuitry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.