Variable resistance device
US4426634A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1982 |
| Grant date | Jan 17, 1984 |
| Priority date | — |
| Expiry date | Apr 26, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01C10/44
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A variable resistance device wherein a slide member is disposed slidably within an elongated case, resistance and collector elements are disposed on an insulating substrate, and a contactor attached to the slide member rides over the resistance and collector elements. A common conductor and a pair of staggered change-over conductor strips are also disposed parallel to each other on the substrate, and a pair of change-over contactors engage with the common conductor and one of the change-over conductors, respectively. A pair of polar light source means disposed within the operating means of the slide member are connected in parallel with opposite polarity, and connected in common to the change-over contactors. One of the change-over contactors engages alternately with one or the other of the change-over conductors in accordance with the linear movement of the slide member, thereby the light source means changes its light alternately.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.