Pager with rechargeable battery and method for charging same
US5194857A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 23, 1991 |
| Grant date | Mar 16, 1993 |
| Priority date | — |
| Expiry date | Jul 23, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B5/228
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A wrist watch pager (100) powered by a rechargeable battery (234) comprises an antenna having first and second antenna portions (102A and 102B) for receiving paging signals when the first and second portions (102A and 102B) are coupled together to form a loop antenna. The first and second antenna portions (102A and 102B) receive a charging voltage from a battery charger (120) directly coupled to the first and second antenna portions (102A and 102B) when the first and second antenna portions (102A and 102B) are uncoupled thereby disabling the loop antenna. A receiver (204) coupled to the loop antenna presents an alert in response to the paging signals. A device (230) coupled between the loop antenna and the receiver (204) blocks the charging voltage from the receiver (204). Another device (232) coupled between the loop antenna antenna and the rechargeable battery (234) blocks the received paging signal from the battery charger (120).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.