B66B 5/028
Safety devices separate from control system in case of power failure, for
Official title: {Safety devices separate from control system in case of power failure, for hydraulical lifts, e.g. braking the hydraulic jack (B66B5/16 takes precedence)}
B66B5/028 (Safety devices separate from control system in case of power failure, for) appears on 42 US grants and 28 published applications in this corpus.
Search patents in B66B- Granted patents
- 42
- Published applications
- 28
- Assignees
- 15
- Inventors
- 66
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 6 | 3 |
| 2003 | 1 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 2 |
| 2016 | 1 | 0 |
| 2017 | 1 | 0 |
| 2018 | 1 | 5 |
| 2019 | 0 | 4 |
| 2020 | 3 | 2 |
| 2021 | 2 | 3 |
| 2022 | 5 | 2 |
| 2023 | 2 | 2 |
| 2024 | 3 | 1 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Elevator safety monitoring system, elevator system, elevator drive unit, and method for operating an elevator18 Aug 2026US 12,709,518 B2Kone Corporation
- Hoistway mechanics of panoramic vacuum elevator8 Oct 2024US 12,110,208 B2Blissera Corp.
- Remote operation of an elevator17 Sep 2024US 12,091,286 B2Kone Corporation
- Elevator system28 May 2024US 11,993,489 B2Mitsubishi Electric Corporation
- Remote operation of an elevator3 Oct 2023US 11,772,932 B2Kone Corporation
- Hoistway Mechanics of Panoramic Vacuum Elevator23 Jan 2025US 2025/0026612 A1Blissera Corp.
- Elevator18 Jul 2024US 2024/0239634 A1Kone Corporation
- Remote operation of an elevator7 Dec 2023US 2023/0391585 A1Kone Corporation
- Elevator back-up battery system19 Oct 2023US 2023/0331518 A1LiiON, LLC East Dundee
- Emergency power supply for an elevator cabin17 Feb 2022US 2022/0052548 A1TK Elevator Innovation and Operations GmbH
Most cited
By later US patents
- Safety arrester for arresting a hydraulically operated lifting ram of a hydraulic elevator20US 3,995,534 A1976
- Hydraulic ram safety device with circular brake14US 4,449,615 AMcDonald Elevator · 1984
- Hydraulic jack seal assembly11US 4,867,460 AWestinghouse Electric Corp. · 1989
- Backup apparatus for a hydraulic elevator brake control11US 6,039,151 AInventio AG · 2000
- Oil pressure auxiliary escape device of elevator10US 5,906,252 A1999