B66B 5/04
For detecting excessive speed
Official title: for detecting excessive speed
B66B5/04 (For detecting excessive speed) appears on 329 US grants and 319 published applications in this corpus.
Search patents in B66B- Granted patents
- 329
- Published applications
- 319
- Assignees
- 88
- Inventors
- 602
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 10 | 0 |
| 1992 | 2 | 0 |
| 1993 | 10 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 6 | 0 |
| 1998 | 4 | 0 |
| 1999 | 5 | 0 |
| 2000 | 2 | 0 |
| 2001 | 10 | 3 |
| 2002 | 8 | 5 |
| 2003 | 3 | 5 |
| 2004 | 2 | 5 |
| 2005 | 1 | 1 |
| 2006 | 5 | 2 |
| 2007 | 2 | 10 |
| 2008 | 2 | 6 |
| 2009 | 12 | 6 |
| 2010 | 5 | 8 |
| 2011 | 6 | 8 |
| 2012 | 7 | 19 |
| 2013 | 6 | 8 |
| 2014 | 8 | 6 |
| 2015 | 7 | 17 |
| 2016 | 9 | 10 |
| 2017 | 11 | 26 |
| 2018 | 13 | 27 |
| 2019 | 22 | 34 |
| 2020 | 21 | 34 |
| 2021 | 22 | 19 |
| 2022 | 27 | 20 |
| 2023 | 20 | 8 |
| 2024 | 13 | 13 |
| 2025 | 6 | 9 |
| 2026 | 11 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Electromechanical sensing and safety actuation of elevator governors15 Sep 2026US 12,735,298 B1Otis Elevator Company
- Beam climber friction monitoring system18 Aug 2026US 12,709,517 B2Otis Elevator Company
- Elevator safety monitoring system, elevator system, elevator drive unit, and method for operating an elevator18 Aug 2026US 12,709,518 B2Kone Corporation
- Solution for overspeed monitoring of an elevator car28 Jul 2026US 12,692,121 B2Kone Corporation
- Elevator safety braking device21 Jul 2026US 12,686,594 B2
- Elevator apparatus17 Sep 2026US 2026/0274616 A1Hitachi, Ltd.
- Electronic safety actuator system, elevator car and counterweight10 Sep 2026US 2026/0265020 A1Otis Elevator Company
- Elevator system having enhanced elevator car deceleration13 Aug 2026US 2026/0233971 A1Otis Elevator Company
- Elevator safety controller, elevator system, and method for causing emergency stop for elevator car9 Jul 2026US 2026/0193054 A1Kone Corporation
- Elevator governor assembly with damper2 Jul 2026US 2026/0184536 A1Otis Elevator Company
Most cited
By later US patents
- Safety mechanism for preventing unintended motion in traction elevators57US 4,923,055 ADelaware Capital Formation, Inc. · 1990
- Electronic control for an elevator braking system49US 6,173,813 B1Otis Elevator Company · 2001
- Remotely resettable ropeless emergency stopping device for an elevator42US 7,575,099 B2Otis Elevator Company · 2009
- Elevator with a governor38US 5,377,786 AKabushiki Kaisha Toshiba · 1995
- Safety device, safety system, and method for supervising safety of an elevator system35US 7,533,763 B2Kone Corporation · 2009