Method of manufacturing circuit component such as stator for variable resistor
US4839960A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 1988 |
| Grant date | Jun 20, 1989 |
| Priority date | — |
| Expiry date | May 25, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/19
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A stator for a variable resistor, manufactured by a step of preparing a heat resistant film of polyimide, a step of preparing a transfer sheet by providing a resistor film containing carbon powder and allyle resin, such as diallyl phthalate resin, on the heat resistant film, a step of preparing a lead terminal, a step of preparing a forming die having a cavity for forming a substrate, a step of locating the transfer sheet and the lead terminal in the forming die to expose at least a part of the resistor film in the cavity and position a part of the lead terminal in the cavity, a step of introducing allyle resin, such as diallyl phthalate resin, into the cavity to form a substrate joined with at least a part of the resistor film, in which substrate a part of the lead terminal is buried, and a step of separating the heat resistant film from the substrate to leave the resistor film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.