B66B 13/22
Operation of door or gate contacts
B66B13/22 (Operation of door or gate contacts) appears on 157 US grants and 188 published applications in this corpus.
Search patents in B66B- Granted patents
- 157
- Published applications
- 188
- Assignees
- 30
- Inventors
- 291
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 3 | 1 |
| 2003 | 3 | 3 |
| 2004 | 1 | 3 |
| 2005 | 0 | 5 |
| 2006 | 2 | 2 |
| 2007 | 3 | 2 |
| 2008 | 5 | 2 |
| 2009 | 2 | 3 |
| 2010 | 3 | 5 |
| 2011 | 3 | 8 |
| 2012 | 4 | 7 |
| 2013 | 6 | 10 |
| 2014 | 8 | 4 |
| 2015 | 5 | 9 |
| 2016 | 5 | 8 |
| 2017 | 7 | 12 |
| 2018 | 9 | 16 |
| 2019 | 8 | 16 |
| 2020 | 7 | 15 |
| 2021 | 11 | 11 |
| 2022 | 17 | 4 |
| 2023 | 9 | 13 |
| 2024 | 4 | 9 |
| 2025 | 6 | 9 |
| 2026 | 12 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Elevator systems28 Jul 2026US 12,692,129 B2Otis Elevator Company
- Testing method for unintended car movement protection device for elevators and unintended car movement protection device for elevators14 Jul 2026US 12,679,695 B2Hitachi, Ltd.
- Method and apparatus for detecting elevator safety chain14 Jul 2026US 12,679,698 B2Otis Elevator Company
- Monitoring of a door of an elevator23 Jun 2026US 12,662,354 B2Kone Corporation
- Avoiding entrapment in an elevator16 Jun 2026US 12,654,985 B2Otis Elevator Company
- Elevator communication system3 Sep 2026US 2026/0257886 A1Kone Corporation
- Door control unit for an elevator system, method of maintaining an elevator system, and maintenance device for maintaining an elevator system16 Jul 2026US 2026/0200697 A1Inventio AG
- Method and apparatus for providing hoistway access security in a lift system16 Jul 2026US 2026/0200698 A1Otis Elevator Company
- Elevator safety controller, elevator system, and method for causing emergency stop for elevator car9 Jul 2026US 2026/0193054 A1Kone Corporation
- Elevator system with door operator translator (dot) and associated methods9 Jul 2026US 2026/0193059 A1Solutions Innovation Technology LLC.
Most cited
By later US patents
- Wireless safety chain for elevator system43US 6,467,585 B1Otis Elevator Company · 2002
- Device for localization of a door breakdown37US 6,193,019 B1Otis Elevator Company · 2001
- Separate elevator door chain34US 5,107,964 AOtis Elevator Company · 1992
- Elevator hoistway access safety32US 6,223,861 B1Otis Elevator Company · 2001
- Elevator door monitoring system25US 6,988,594 B2Inventio AG · 2006