B66B 2201/307
Tandem operation of multiple elevator cars in the same shaft
B66B2201/307 (Tandem operation of multiple elevator cars in the same shaft) appears on 12 US grants and 17 published applications in this corpus.
Search patents in B66B- Granted patents
- 12
- Published applications
- 17
- Assignees
- 9
- Inventors
- 46
- Latest grant
- 20 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 1 |
| 2016 | 0 | 2 |
| 2017 | 2 | 1 |
| 2018 | 1 | 0 |
| 2019 | 2 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 4 |
| 2022 | 0 | 4 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Autonomous elevator car mover configured for self-learning lateral clearance control20 Jan 2026US 12,528,667 B2Otis Elevator Company
- Elevator system having two shafts25 Nov 2025US 12,479,700 B2TK Elevator Innovation and Operations GmbH
- Autonomous elevator car movers and traction surfaces therefor, configured with traction increasing and guidance enhancing implements21 Feb 2023US 11,584,621 B2Otis Elevator Company
- User-controlled elevator allocation for independent service1 Oct 2019US 10,427,909 B2Otis Elevator Company
- Car separation control in multi-car elevator system3 Sep 2019US 10,399,815 B2Otis Elevator Company
- Elevator system having two elevator cars in a common shaft12 May 2022US 2022/0144591 A1TK Elevator Innovation and Operations GmbH
- Ropeless elevator building to building mobility system3 Mar 2022US 2022/0063958 A1Otis Elevator Company
- Autonomous elevator car mover configured for self-learning gap control17 Feb 2022US 2022/0048729 A1Otis Elevator Company
- Autonomous elevator car movers and traction surfaces therefor, configured with traction increasing and guidance enhancing implements3 Feb 2022US 2022/0033226 A1Otis Elevator Company
- Elevator system having two shafts13 May 2021US 2021/0139282 A1thyssenkrupp Elevator Innovation and Operations AG
Most cited
By later US patents
- Elevator control system68US 5,663,538 A1997
- Elevator system with multiple cars in the same hoistway55US 5,419,414 A1995
- Elevator installation with individually movable elevator cars and method for operating such an elevator installation21US 7,537,089 B2Inventio AG · 2009
- Double-decker lift installation3US 9,174,822 B2Inventio AG · 2015
- Autonomous elevator car movers and traction surfaces therefor, configured with traction increasing and guidance enhancing implements2US 11,584,621 B2Otis Elevator Company · 2023