Tamper alarm for electronic lock
US11156020B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 2019 |
| Grant date | Oct 26, 2021 |
| Priority date | — |
| Expiry date | Apr 22, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/12
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An electronic lock includes a latch assembly that includes a bolt that is movable between an extended position and a retracted position. The electronic lock includes a keypad for receiving a keypad input event. The electronic lock includes a processing unit being configured to control the movement of the bolt between the extended position and the retracted position responsive to receiving a valid keypad input event. The processing unit is configured to capture the keypad input event. Based at least in part on a characteristic of the keypad input event, the processing unit indicates if a tampering event exists. The characteristic includes at least one of an input location on the keypad, an input duration on the keypad, and an input timestamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.