B66C 23/92
Snubbers or dashpots for preventing backwards swinging of jibs
Official title: Snubbers or dashpots for preventing backwards swinging of jibs, e.g. in the event of cable or tackle breakage
B66C23/92 (Snubbers or dashpots for preventing backwards swinging of jibs) appears on 21 US grants and 22 published applications in this corpus.
Search patents in B66C- Granted patents
- 21
- Published applications
- 22
- Assignees
- 17
- Inventors
- 62
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 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 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 2 |
| 2019 | 3 | 7 |
| 2020 | 5 | 0 |
| 2021 | 2 | 0 |
| 2022 | 1 | 2 |
| 2023 | 0 | 2 |
| 2024 | 1 | 2 |
| 2025 | 1 | 1 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Backstop10 Feb 2026US 12,545,559 B2Kobelco Construction Machinery Co., Ltd.
- Heavy lift crane6 Jan 2026US 12,515,924 B2Itrec B V
- Lifting device provided with an auxiliary device for counteracting tipover of the boom in sudden loss of load18 Nov 2025US 12,473,181 B2DEME Offshore BE NV
- Backstop position changing device for crane4 Jun 2024US 11,999,599 B2Kobelco Construction Machinery Co., Ltd.
- Hydraulic system for a fall-back support and work machine30 Aug 2022US 11,427,987 B2Liebherr-Werk Nenzing GmbH
- Crane18 Jun 2026US 2026/0167465 A1Kobelco Construction Machinery Co., Ltd.
- Crane having active fallback protection26 Jun 2025US 2025/0206417 A1Liebherr-MCCtec Rostock GmbH
- Crane with luffing aid device and method for luffing such a crane3 Oct 2024US 2024/0327175 A1Liebherr-Werk Ehingen GmbH
- Backstop15 Aug 2024US 2024/0270542 A1Kobelco Construction Machinery Co., Ltd.
- Heavy lift crane19 Oct 2023US 2023/0331524 A1Itrec B V
Most cited
By later US patents
- Luffing jib for construction crane28US 4,383,616 AKidde, Inc. · 1983
- Hydraulic boom stop5US 5,676,264 ASeatrax, Inc. · 1997
- Portable hoisting system4US 10,464,788 B12019
- Boom stop and back hitch compensating system4US 4,005,780 AThe Manitowoc Company, Inc. · 1977
- Stop for crane boom4US 4,270,663 AFMC Corporation · 1981