Miniature variable resistor
US4309690A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 1980 |
| Grant date | Jan 5, 1982 |
| Priority date | — |
| Expiry date | Mar 21, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01C10/345
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A miniature variable resistor comprising an insulating substrate provided with a hole therethrough. A resistance pattern which is carried on a front surface of the insulating substrate in a manner to surround the hole, and a hollow rotor of insulating synthetic resin is provided with an operating portion and a slidable contact portion slidable on the front surface. A slide member is unitarily embedded in the rotor and which has elastic protuberant pieces protruding into the hollow portion of the rotor, and a shaft member which protrudes beyond the hole from a rear surface of the insulating substrate is fitted tightly in the hollow portion of the rotor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.