Motion sensor
US6198396A · kind A · utility
11Cited by
8References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 30, 1998 |
| Grant date | Mar 6, 2001 |
| Priority date | — |
| Expiry date | Nov 30, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B21/0446
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A motion sensor having an electrically-conductive ball and at least a second ball to damp the motion of the electrically-conductive ball. Both balls are confined within a housing. A plurality of electrical contact elements are disposed within the housing. During movement, the electrically-conductive ball successively forms electrical connection with the electrical contact elements within the housing. The motion sensor also includes detection circuitry in electrical connection with the electrical contact elements to detect if the electrically-conducting ball is moving.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.