Electrical pocket thermometer with digital display
US4601589A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 21, 1985 |
| Grant date | Jul 22, 1986 |
| Priority date | — |
| Expiry date | May 21, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S136/291
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electrical thermometer having a digital display comprises a flat, rectangular casing a principal face of which is provided with the digital indicating device, and a measuring probe which is connected with a voltage-fed electrical building block of an electronic analyzer and display unit. The thermometer is devised to be smaller and more compact than known devices and affords a safe operation even under disadvantageous environmental conditions. To this end, the voltage source of the electronic analyzer and display unit block is a solar cell arranged in a principal face of the casing. The presence of this solar cell affords a particularly advantageous permanent guarantee of the energy supply. Moreover, it offers the advantage of a construction of the thermometer casing which is free from the need for a receptacle opening for a battery and can thus be manufactured water-tight in a simple manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.