Touchpad stylus having isolated low-mass contact element
US6972754B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 27, 2002 |
| Grant date | Dec 6, 2005 |
| Priority date | — |
| Expiry date | Aug 25, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/03545
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touchpad stylus includes a housing, a stylus member axially moveable in the housing, and an energy-absorbing cushion member interposed between a rear extremity of the stylus member and an internal cavity of the housing, the cushion member lightly forwardly biasing the stylus member relative to the housing. The stylus member has a smoothly spherical tip extremity, and the device avoids impact damage to fragile outer membranes of existing touchpad devices because the full mass of the housing is isolated from impact with the touchpad, the stylus member itself having very significantly less mass than an aggregate mass of the complete assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.