Structure of string resistor body in an operation panel device
US6727825B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 18, 2002 |
| Grant date | Apr 27, 2004 |
| Priority date | — |
| Expiry date | Aug 27, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2239/012
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An operation panel 30 is provided with a plurality of operation buttons 36. A string-like resistor body 41 is held in a resistor holding plate 31. The resistor body 41 has a tube-like elastic outer resistor member 42, an inner resistor member 43 loosely arranged within the outer resistor member and insulating spacers 44 arranged between the inner resistor member and the outer resistor member at predetermined intervals in the longitudinal direction of the inner resistor member so that the inner periphery of the outer resistor member 42 and outer periphery of the inner resistor member 43 are constantly separated from each other. A control unit 53 is provided to produce an operation signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.