Entry/exit detection locking device
US11887425B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Apr 23, 2021 |
| Grant date | Jan 30, 2024 |
| Priority date | — |
| Expiry date | Apr 15, 2042 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05B2047/0073
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An entry/exit detection locking device includes a knob axle of a lock and an engaging and holding unit and a retention unit. The knob axle includes upper and lower rotary axles each formed with a notch. The engaging and holding unit is arranged at one side of the knob axle. The retention unit is arranged below the knob axle. The retention unit is connected through a control circuit to a card reader at an outdoor side. Through adjustment, the engaging and holding unit is set in engagement with the notch of the upper rotary axle or the notch of the lower rotary axle to achieve a locked state for exit or entry. Rotating the knob axle for entry or exit triggers the retention unit to make a record of the exit or entry. The engaging and holding unit is connected to the card reader to enable unlocking through card swiping.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.