Self-calibration elevator door lock contact making device
US-2025289686-A1 · Sep 18, 2025 · US
without manually-operable devices for completing locking or unlocking of doors
without manually-operable devices for completing locking or unlocking of doors · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B66B13/18 |
| Official title | without manually-operable devices for completing locking or unlocking of doors |
| Display label | without manually-operable devices for completing locking or unlocking of doors |
| Total patents | 27 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 2 |
| 2019 | 3 |
| 2020 | 6 |
| 2021 | 4 |
| 2022 | 4 |
| 2023 | 1 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Distance sensor device for monitoring a lock clearance of an elevator door locking device
US-2025011127-A1 · Jan 9, 2025 · US
Elevator car door interlock
US-11795033-B2 · Oct 24, 2023 · US
Elevator component inspection systems
US-11518655-B2 · Dec 6, 2022 · US
Device for unlocking a landing door
US-11390491-B2 · Jul 19, 2022 · US
Elevator car door coupling systems
US-11286134-B2 · Mar 29, 2022 · US
Car door interlock
US-11254542-B2 · Feb 22, 2022 · US
Elevator car door interlock
US-2021380373-A1 · Dec 9, 2021 · US
Elevator car door interlock
US-11124389-B2 · Sep 21, 2021 · US
Mechanical hoistway access control device
US-10889465-B2 · Jan 12, 2021 · US
Elevator car door interlock
US-10882720-B2 · Jan 5, 2021 · US
Elevator car door interlock
US-2020262683-A1 · Aug 20, 2020 · US
Car door interlock with sill lock
US-10710843-B2 · Jul 14, 2020 · US
Maintenance safety device for elevator and a operation method thereof
US-10676321-B2 · Jun 9, 2020 · US
Device for unlocking a landing door
US-2020071132-A1 · Mar 5, 2020 · US
Car door interlock
US-2020055705-A1 · Feb 20, 2020 · US
Elevator component inspection systems
US-2020031627-A1 · Jan 30, 2020 · US
Elevator car door coupling systems
US-2019345005-A1 · Nov 14, 2019 · US
Hoistway door locking system and method of controlling access to an elevator shaft
US-10221044-B2 · Mar 5, 2019 · US
Mechanical hoistway access control device
US-2019031468-A1 · Jan 31, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B66B13/18?
- CPC B66B13/18 is the Cooperative Patent Classification code for “without manually-operable devices for completing locking or unlocking of doors.”
- How many patents are filed under CPC B66B13/18 (without manually-operable devices for completing locking or unlocking of doors)?
- Our database includes 27 publications tagged with this CPC code.
- Is patent activity under CPC B66B13/18 growing?
- Publication counts under this code: 1 in 2023 vs 2 in 2025 (latest complete years).