B66B 5/02
Responsive to abnormal operating conditions
Official title: responsive to abnormal operating conditions
B66B5/02 (Responsive to abnormal operating conditions) appears on 1,351 US grants and 1,395 published applications in this corpus.
Search patents in B66B- Granted patents
- 1,351
- Published applications
- 1,395
- Assignees
- 261
- Inventors
- 2,122
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 10 | 0 |
| 1978 | 11 | 0 |
| 1979 | 7 | 0 |
| 1980 | 5 | 0 |
| 1981 | 7 | 0 |
| 1982 | 12 | 0 |
| 1983 | 6 | 0 |
| 1984 | 16 | 0 |
| 1985 | 15 | 0 |
| 1986 | 2 | 0 |
| 1987 | 13 | 0 |
| 1988 | 5 | 0 |
| 1989 | 5 | 0 |
| 1990 | 5 | 0 |
| 1991 | 21 | 0 |
| 1992 | 10 | 0 |
| 1993 | 19 | 0 |
| 1994 | 17 | 0 |
| 1995 | 12 | 0 |
| 1996 | 15 | 0 |
| 1997 | 16 | 0 |
| 1998 | 15 | 0 |
| 1999 | 20 | 0 |
| 2000 | 17 | 0 |
| 2001 | 23 | 7 |
| 2002 | 23 | 17 |
| 2003 | 10 | 19 |
| 2004 | 14 | 19 |
| 2005 | 13 | 13 |
| 2006 | 16 | 14 |
| 2007 | 11 | 39 |
| 2008 | 14 | 32 |
| 2009 | 30 | 29 |
| 2010 | 26 | 32 |
| 2011 | 24 | 38 |
| 2012 | 27 | 43 |
| 2013 | 23 | 33 |
| 2014 | 25 | 32 |
| 2015 | 30 | 71 |
| 2016 | 36 | 64 |
| 2017 | 60 | 108 |
| 2018 | 77 | 123 |
| 2019 | 85 | 111 |
| 2020 | 67 | 134 |
| 2021 | 62 | 92 |
| 2022 | 94 | 80 |
| 2023 | 90 | 64 |
| 2024 | 73 | 66 |
| 2025 | 44 | 65 |
| 2026 | 66 | 50 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B66B 5/16Braking or catch devices operating between cars, cages, or skips and fixed549
- B66B 5/04For detecting excessive speed329
- B66B 5/027To permit passengers to leave an elevator car in case of failure210
- B66B 5/021The abnormal operating conditions being independent of the system165
- B66B 5/12In case of rope or cable slack57
- B66B 5/028Safety devices separate from control system in case of power failure, for42
- B66B 5/14In case of excessive loads34
- B66B 5/08For preventing overwinding25
Recent patents
- System and a method for controlling sway angle of an elevator cabin6 Oct 2026US 12,753,045 B2
- Elevator system configured to perform a self diagnosis and method of operating the elevator system29 Sep 2026US 12,747,134 B2Otis Elevator Company
- Electromechanical sensing and safety actuation of elevator governors15 Sep 2026US 12,735,298 B1Otis Elevator Company
- Suspension device and use thereof in an elevator system, and method8 Sep 2026US 12,729,095 B2Inventio AG
- Compact electromechanical activation system for a lift safety device8 Sep 2026US 12,729,096 B2Dynatech, Dynamics & Technology, S.L.
- Elevator Traction Media Monitoring1 Oct 2026US 2026/0296833 A1Inventio AG
- Vertical reciprocating conveyor24 Sep 2026US 2026/0285644 A1Multilift, Inc.
- Brake system17 Sep 2026US 2026/0274614 A1Inventio AG
- Free-fall protection assembly for elevator system and method of operation thereof17 Sep 2026US 2026/0274615 A1HCL Technologies Limited
- Elevator apparatus17 Sep 2026US 2026/0274616 A1Hitachi, Ltd.
Most cited
By later US patents
- Brake regulating apparatus for an elevator car118US 5,648,644 AInventio AG · 1997
- Multiple level building with an elevator system operable as a means of emergency egress and evacuation during a fire incident92US 5,979,607 A1999
- Apparatus and method for controlling operation of elevator in power failure69US 6,315,081 B1LG Industrial Systems Co., Ltd. · 2001
- Eddy current brake system with dual use conductor fin62US 6,412,611 B1Magnetar Technologies, Inc. · 2002
- Alternating current motor control system with emergency control responsive to failure of power supply58US 5,070,290 AOtis Elevator Company · 1991