Detachably mounted keyboard pushbutton actuators and housing assembly
US3993884A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1972 |
| Grant date | Nov 23, 1976 |
| Priority date | — |
| Expiry date | Sep 15, 1992 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2235/018
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Universal keyboard with individually removable switch modules each adapted particularly for use with a printed circuit switch, although also adapted to close or actuate other types of switch contacts, which has maximum reliability at minimum cost, satisfies the "best feel" tactile responses desired in a keyboard, while fully protecting the module components and the electrical conducting members against any excessive finger depression impact forces, assures uniformity of forces being applied to switch contacts regardless of variations in forces which may be applied to the key buttons or stems, reduces electric contact bounce, and maximizes the time the switch contacts are held closed during a key stroke.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.