Alarm system sensing and triggering apparatus
US5172098A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 1991 |
| Grant date | Dec 15, 1992 |
| Priority date | — |
| Expiry date | May 29, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S439/917
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An alarm system remotely detects a sensor being attached to or detached from a product. The sensor has a secured state and an unsecured state. The sensor is in the secured state when attached to the product and in the unsecured state when detached from the product. The sensor includes an indicator for indicating the state of the sensor. A detector electrically connected to the sensor determines the state of the sensor. The detector provides a control signal in response to the state of the sensor. The control signal controls the indicator. An alarm is electrically connected to the detector and is responsive to the control signal for indicating the state of the sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.