B66C 13/50
Applications of limit circuits or of limit-switch arrangements
Official title: Applications of limit circuits or of limit-switch arrangements (for winding mechanisms B66D1/56)
B66C13/50 (Applications of limit circuits or of limit-switch arrangements) appears on 50 US grants and 28 published applications in this corpus.
Search patents in B66C- Granted patents
- 50
- Published applications
- 28
- Assignees
- 41
- Inventors
- 96
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 3 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 3 |
| 2017 | 1 | 2 |
| 2018 | 1 | 3 |
| 2019 | 5 | 2 |
| 2020 | 1 | 2 |
| 2021 | 2 | 1 |
| 2022 | 1 | 3 |
| 2023 | 2 | 1 |
| 2024 | 4 | 4 |
| 2025 | 1 | 2 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Mobile crane7 Jul 2026US 12,673,852 B2Liebherr-Werk Ehingen GmbH
- Grid-powered material handling and/or construction machine23 Jun 2026US 12,662,357 B2Liebherr-Werk Biberach GmbH
- Monitoring system and method7 Jan 2025US 12,187,583 B2Brandt Industries Canada Ltd.
- Weight17 Dec 2024US 12,168,595 B2Kobelco Construction Machinery Co., Ltd.
- Mobile crane29 Oct 2024US 12,129,153 B2Sumitomo Heavy Industries Construction Cranes Co., Ltd.
- Rope inspection device and work machine including same27 Feb 2025US 2025/0066168 A1Kobelco Construction Machinery Co., Ltd.
- Mobile crane2 Jan 2025US 2025/0002301 A1Liebherr-Werk Ehingen GmbH
- Crane with derrick ballast14 Nov 2024US 2024/0375918 A1Liebherr-Werk Ehingen GmbH
- Grid-powered material handling and/or construction machine11 Jul 2024US 2024/0228238 A1Liebherr-Werk Biberach GmbH
- Automatic method for determining a physical end-of-travel position of a reeve-block of a tower crane18 Jan 2024US 2024/0017969 A1Manitowoc Crane Group France SAS
Most cited
By later US patents
- Automatic resetting anti 2-block crane warning system21US 4,300,134 AEaton Corporation · 1981
- Safety system for cranes20US 3,969,714 A1976
- Crane load inidicating arrangement18US 3,965,733 APye Limited · 1976
- Hydraulic function disconnect means17US 4,170,308 AKoehring Company · 1979
- Anti-two block device using non-contract measuring and detecting devices14US 6,343,703 B12002