Elevator door interlock device, elevator door interlock operation method and elevator system
US-2024367943-A1 · Nov 7, 2024 · US
Arrangements for effecting simultaneous opening or closing of cage and landing doors
Arrangements for effecting simultaneous opening or closing of cage and landing 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 | B66B13/12 |
| Official title | Arrangements for effecting simultaneous opening or closing of cage and landing doors |
| Display label | Arrangements for effecting simultaneous opening or closing of cage and landing doors |
| Total patents | 98 |
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 | 7 |
| 2016 | 9 |
| 2017 | 6 |
| 2018 | 10 |
| 2019 | 10 |
| 2020 | 12 |
| 2021 | 13 |
| 2022 | 10 |
| 2023 | 11 |
| 2024 | 4 |
| 2025 | 5 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
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 car door interlock
US-10882720-B2 · Jan 5, 2021 · US
Elevator system landing door unlocking mechanism
US-2020283270-A1 · Sep 10, 2020 · 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
Lift car for a lift installation and method for opening and closing a door opening
US-2020207586-A1 · Jul 2, 2020 · US
Automatic test of deterrent device
US-10696519-B2 · Jun 30, 2020 · US
Elevator car door interlock
US-2020122978-A1 · Apr 23, 2020 · US
Elevator landing door unlocking system
US-2020115192-A1 · Apr 16, 2020 · US
Device for unlocking a landing door
US-2020071132-A1 · Mar 5, 2020 · US
Automated elevator safety chain diagnosis
US-2020062543-A1 · Feb 27, 2020 · US
Car door interlock
US-2020055705-A1 · Feb 20, 2020 · US
Elevator car apron
US-2020048047-A1 · Feb 13, 2020 · US
Elevator component inspection systems
US-2020031619-A1 · Jan 30, 2020 · US
Elevator car door coupling systems
US-2019345005-A1 · Nov 14, 2019 · US
Elevator door interlock assembly
US-2019337765-A1 · Nov 7, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B66B13/12?
- CPC B66B13/12 is the Cooperative Patent Classification code for “Arrangements for effecting simultaneous opening or closing of cage and landing doors.”
- How many patents are filed under CPC B66B13/12 (Arrangements for effecting simultaneous opening or closing of cage and landing doors)?
- Our database includes 98 publications tagged with this CPC code.
- Is patent activity under CPC B66B13/12 growing?
- Publication counts under this code: 4 in 2024 vs 5 in 2025 (latest complete years).