Alarm system for a card holder
US5892444A · kind A · utility
26Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 10, 1998 |
| Grant date | Apr 6, 1999 |
| Priority date | — |
| Expiry date | Jan 10, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA45C11/184
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A flexible resilient ribbon having first and second conductive surfaces is wrapped over the top edge of a pocket wall forming a bowed-out first conductive surface adjacent to the top edge of the wall which biases the first conductive surface into contact with the second conductive surface when a card is absent from the pocket, an alarm circuit IC terminal is connected by a network which includes a fixed resistor to power supply negative and the first and second conductive surfaces each of carbon, in series removable contact, connected to power supply positive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.