Alarm device distinguishing between lawful occupier and intruder
US11532217B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 2018 |
| Grant date | Dec 20, 2022 |
| Priority date | — |
| Expiry date | Aug 28, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/1645
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An opening detection device for an opening element such as a door or window including a module that is applied to an inner side of the opening element, wherein the module includes means for detecting movement of the opening element, first presence detection means forming a conical beam defining what is termed a trust perimeter encompassing an operating distance over which an operator operates the mechanism for opening the opening element on the first side of the opening element, second presence detection means for detecting a presence on what is termed a mistrust perimeter circumscribed around the opening element and means for processing data from the detection means, for memory storage and for computation that are connected to the detection means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.