Method of manufacturing a keyboard assembly
US4083100A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 1977 |
| Grant date | Apr 11, 1978 |
| Priority date | — |
| Expiry date | Jan 24, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49895
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An improved method is disclosed for manufacturing a keyswitch assembly which includes a plurality of switches in a predefined arrangement on the face of an insulative circuit board and which also has a protective, insulative coating over the switches and board face. Each of the switches includes a pair of spaced contacts on the board face and a resilient, deformable, electrically conductive actuating element which can be selectively deformed to provide an electrical circuit between the two contacts. The method is performed with the aid of a planar template having a plurality of apertures positioned in a predefined arrangement corresponding to the arrangement of the switches on the circuit board. As an initial step, an insulative sheet, eventually forming the coating, is placed on a flat surface and the template is placed on top of the sheet so that the sheet is sandwiched between the template and the surface. Next, a plurality of actuating elements are secured to the sheet by being inserted, in an inverted position, into different template apertures and bonded to the sheet at the point of contact therewith. This forms an assembly sheet comprising the original insulative sheet with …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.