B66C 3/12
Grabs actuated by two or more ropes
B66C3/12 (Grabs actuated by two or more ropes) appears on 25 US grants and 14 published applications in this corpus.
Search patents in B66C- Granted patents
- 25
- Published applications
- 14
- Assignees
- 16
- Inventors
- 30
- Latest grant
- 21 Sep 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 2 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 2 | 0 |
| 2016 | 0 | 3 |
| 2017 | 1 | 1 |
| 2018 | 0 | 1 |
| 2019 | 1 | 2 |
| 2020 | 2 | 0 |
| 2021 | 3 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Method of unloading floating containers21 Sep 2021US 11,123,768 B2Cogar Manufacturing, Inc.
- Slurry wall grab having a hybrid drive22 Jun 2021US 11,041,283 B2Liebherr-Werk Nenzing GmbH
- Clamshell bucket with aux-bail carriage assembly30 Mar 2021US 10,961,084 B2Taylor-Winfield Technologies, Inc.
- Material handling device for separating feed for livestock7 Apr 2020US 10,609,870 B2Cornelis Hendricus Liet
- Fill degree control for a bulk material gripper of a crane7 Apr 2020US 10,611,606 B2Konecranes Global Corporation
- Hoisting apparatus with automated load leveling6 Jun 2024US 2024/0182272 A1
- Method of unloading floating containers14 Jan 2021US 2021/0009384 A1Cogar Manufacturing, Inc.
- Slurry wall grab having a hybrid drive2 May 2019US 2019/0127948 A1Liebherr-Werk Nenzing GmbH
- Clamshell bucket with aux-bail carriage assembly28 Feb 2019US 2019/0062126 A1Taylor-Winfield Technologies, Inc.
- Four Cable Operated Scissors17 May 2018US 2018/0134525 A1Nemag, B.V.
Most cited
By later US patents
- Control system for rope bucket18US 6,023,862 AKCI Konecranes International PLC · 2000
- Hoist drive and method for driving a double hoist carrying apparatus17US 5,167,401 AHarnischfeger Corporation · 1992
- Method and apparatus for controlling a bucket hoist using a flux vector AC drive11US 6,653,804 B1MagneTek, Inc. · 2003
- Method and apparatus for controlling a bucket hoist8US 9,650,231 B2MagneTek, Inc. · 2017
- Power bucket7US 5,553,404 A1996