B66B 11/0246
Maintenance features
Official title: {Maintenance features (devices facilitating maintenance in general B66B5/0087)}
B66B11/0246 (Maintenance features) appears on 64 US grants and 107 published applications in this corpus.
Search patents in B66B- Granted patents
- 64
- Published applications
- 107
- Assignees
- 11
- Inventors
- 165
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 3 |
| 2008 | 2 | 3 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 1 | 0 |
| 2012 | 1 | 1 |
| 2013 | 1 | 3 |
| 2014 | 0 | 2 |
| 2015 | 1 | 3 |
| 2016 | 3 | 3 |
| 2017 | 2 | 9 |
| 2018 | 2 | 14 |
| 2019 | 6 | 21 |
| 2020 | 8 | 5 |
| 2021 | 7 | 10 |
| 2022 | 8 | 3 |
| 2023 | 6 | 3 |
| 2024 | 4 | 2 |
| 2025 | 3 | 7 |
| 2026 | 3 | 9 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Elevator car ceiling access system25 Aug 2026US 12,715,739 B2Otis Elevator Company
- Elevator car emergency ladder systems21 Jul 2026US 12,686,596 B2Otis Elevator Company
- Elevator car roof system and a control system for monitoring an opening state of an elevator car roof19 May 2026US 12,630,390 B2Kone Corporation
- Elevator car with stowable working platform11 Nov 2025US 12,466,698 B2Otis Elevator Company
- Elevator car ceiling access system15 Jul 2025US 12,358,759 B1Otis Elevator Company
- Elevator car ceiling access system18 Jun 2026US 2026/0167459 A1Otis Elevator Company
- Elevator car ceiling access system18 Jun 2026US 2026/0167460 A1Otis Elevator Company
- Full-ceiling drop-down platforms for maintenance from inside ca28 May 2026US 2026/0145912 A1Otis Elevator Company
- Elevator car comprising a working opening28 May 2026US 2026/0145913 A1Otis Elevator Company
- Elevator system with storage for mobile working platform30 Apr 2026US 2026/0116704 A1Otis Elevator Company
Most cited
By later US patents
- Elevator car with maintenance window28US 8,316,998 B2Inventio AG · 2012
- Equipment for carrying out operations in an elevator shaft22US 6,202,801 B1Inventio AG · 2001
- Device for carrying out work in an elevator shaft22US 6,880,678 B1Inventio AG · 2005
- Elevator without a machine room19US 6,691,833 B1Inventio AG · 2004
- Equipment for carrying out operations in an elevator shaft11US 6,419,052 B1Inventio AG · 2002