Vibrating apparatus for low profile pagers
US5554971A · kind A · utility
19Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 6, 1995 |
| Grant date | Sep 10, 1996 |
| Priority date | — |
| Expiry date | Apr 6, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B6/00
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Vibratory alertion of received messages to subscribers of low profile pagers can be achieved in the following manner. On the substrate, or pager housing, attaching a pivotal post and a bumper a predetermined distance from the pivotal post. Attaching a substantially planar polarizable material to the pivotal post such that the polarizable material is substantially parallel to the substrate and when in motion, moves substantially parallel to the substrate. The polarizable material is set in motion by an excitation winding which provides a varying field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.