Computer key
US5380969A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 28, 1993 |
| Grant date | Jan 10, 1995 |
| Priority date | — |
| Expiry date | Apr 28, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2221/062
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A computer key includes a socket member which confines a receiving space therein and which has a top wall that is provided with a through hole, a resilient biasing member which is disposed inside the receiving space of the socket member, and a support member which has an upright tubular portion and a flange portion that projects radially outward from an intermediate part of the tubular portion and that is in sliding contact with an inner wall surface of the socket member. The support member is provided inside the receiving space of the socket member such that the tubular portion extends through the through hole of the socket member. The tubular portion has a bottom end which rests on top of the biasing member. The biasing member urges the support member upward to a normal unpressed key condition. A push button is secured on top of the support member. The flange portion is provided with at least one spring unit to cushion impact between the flange portion and the top wall of the socket member when the biasing member expands to return the support member to the normal unpressed key condition due to the removal of an applied force on the push button.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.