Elevator car door locking device and elevator equipment
US-12479701-B2 · Nov 25, 2025 · US
Lock mechanisms actuated mechanically by abutments or projections on the cages
Lock mechanisms actuated mechanically by abutments or projections on the cages · 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 | B66B13/20 |
| Official title | Lock mechanisms actuated mechanically by abutments or projections on the cages |
| Display label | Lock mechanisms actuated mechanically by abutments or projections on the cages |
| Total patents | 53 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 2 |
| 2017 | 5 |
| 2018 | 4 |
| 2019 | 8 |
| 2020 | 8 |
| 2021 | 10 |
| 2022 | 6 |
| 2023 | 6 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Elevator car door locking device and elevator equipment
US-2024158206-A1 · May 16, 2024 · US
Elevator car door interlock
US-11795033-B2 · Oct 24, 2023 · US
Versatile elevator door interlock assembly
US-11760604-B1 · Sep 19, 2023 · US
Interlock assembly for elevator door and elevator system
US-11724916-B2 · Aug 15, 2023 · US
Elevator door in interlock assembly
US-11655122-B2 · May 23, 2023 · US
Elevator door interlock assembly
US-11603290-B2 · Mar 14, 2023 · US
Interlock assembly for elevator door and elevator system
US-2023033794-A1 · Feb 2, 2023 · US
Elevator component inspection systems
US-11518655-B2 · Dec 6, 2022 · US
Method and assembly for positioning an elevator door interlock
US-11390492-B2 · Jul 19, 2022 · US
Elevator landing door unlocking system
US-11332346-B2 · May 17, 2022 · US
Car door interlock
US-11254542-B2 · Feb 22, 2022 · US
Elevator car door interlock
US-11247872-B2 · Feb 15, 2022 · US
Elevator door interlock assembly
US-2022024725-A1 · Jan 27, 2022 · US
Elevator car door interlock
US-2021380373-A1 · Dec 9, 2021 · US
Elevator door interlock assembly
US-11155444-B2 · Oct 26, 2021 · US
Elevator car door interlock
US-11124389-B2 · Sep 21, 2021 · US
Elevator door interlock assembly
US-2021261384-A1 · Aug 26, 2021 · US
Elevator lintel door lock safety devices
US-11091351-B2 · Aug 17, 2021 · US
Elevator door interlock assembly
US-11046557-B2 · Jun 29, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B66B13/20?
- CPC B66B13/20 is the Cooperative Patent Classification code for “Lock mechanisms actuated mechanically by abutments or projections on the cages.”
- How many patents are filed under CPC B66B13/20 (Lock mechanisms actuated mechanically by abutments or projections on the cages)?
- Our database includes 53 publications tagged with this CPC code.
- Is patent activity under CPC B66B13/20 growing?
- Publication counts under this code: 1 in 2024 vs 1 in 2025 (latest complete years).