Force sensitive transducer for use in a computer keyboard
US5489900A · kind A · utility
60Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 3, 1994 |
| Grant date | Feb 6, 1996 |
| Priority date | — |
| Expiry date | Jun 3, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0338
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A strain sensitive columnar transducer for a data entry keyboard contains a column upstanding from the keyboard. Strain sensitive orthogonally oriented patterns are formed on a single flexible planar sheet which is sliced to place each of the patterns on a separate tab. The planar sheet is forced over the column so that the patterns lie up against the sides of the column to measure force exerted on the column.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.