Door position sensor for mortise locks utilizing existing auxiliary or main latch operation
US11168494B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 22, 2018 |
| Grant date | Nov 9, 2021 |
| Priority date | — |
| Expiry date | Jul 6, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05B2047/0069
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A mortise lock assembly is disclosed that enables a position of a door associated with the mortise lock assembly to be determined despite whether a deadbolt is in a retracted state or an engaged state. An auxiliary latch assembly transitions between an engaged state and a retracted state. A main latch assembly may also transition between an engaged state and a retracted state. A magnetic field sensing device that is positioned on the auxiliary latch assembly detects a magnetic field generated by a magnetic field generating device positioned on a door strike. The magnetic field sensing device is positioned on the auxiliary latch assembly such that the magnetic field sensing device is aligned with the magnetic field generating device positioned on the door strike when the door is in a closed position. The magnetic field sensing device may also be positioned on the main latch assembly in a similar manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.