B66C 23/84
Slewing gear
Official title: Slewing gear (anti-friction bearings F16C)
B66C23/84 (Slewing gear) appears on 249 US grants and 183 published applications in this corpus.
Search patents in B66C- Granted patents
- 249
- Published applications
- 183
- Assignees
- 140
- Inventors
- 454
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 10 | 0 |
| 1981 | 5 | 0 |
| 1982 | 4 | 0 |
| 1983 | 12 | 0 |
| 1984 | 7 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 1 |
| 2002 | 2 | 4 |
| 2003 | 6 | 5 |
| 2004 | 4 | 3 |
| 2005 | 0 | 4 |
| 2006 | 3 | 1 |
| 2007 | 2 | 7 |
| 2008 | 3 | 1 |
| 2009 | 0 | 2 |
| 2010 | 2 | 12 |
| 2011 | 3 | 7 |
| 2012 | 2 | 3 |
| 2013 | 7 | 6 |
| 2014 | 8 | 11 |
| 2015 | 5 | 8 |
| 2016 | 8 | 8 |
| 2017 | 4 | 9 |
| 2018 | 7 | 11 |
| 2019 | 12 | 9 |
| 2020 | 19 | 16 |
| 2021 | 8 | 12 |
| 2022 | 7 | 15 |
| 2023 | 8 | 4 |
| 2024 | 13 | 5 |
| 2025 | 8 | 8 |
| 2026 | 5 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Rotation control device of work machine and work machine equipped with same18 Aug 2026US 12,709,521 B2Kobelco Construction Machinery Co., Ltd.
- Lubricant leakage control mechanism and gear mechanism18 Aug 2026US 12,710,096 B2Nabtesco Corporation
- Crane, a vehicle with a crane, method to operate a crane and circuitry to determine a use of a crane16 Jun 2026US 12,654,999 B2Palfinger AG
- Crane slewing control device and crane equipped with same7 Apr 2026US 12,595,160 B2Kobe Steel, Ltd.
- Parking brake device and work machine equipped with the same20 Jan 2026US 12,528,673 B2Kobelco Construction Machinery Co., Ltd.
- Crane, a vehicle with a crane, a method to operate a crane, and circuitry to determine a use of a crane1 Oct 2026US 2026/0296840 A1Palfinger AG
- Wind turbine mounted crane1 Oct 2026US 2026/0296845 A1Liftra IP Aps
- Support structure for crane, crane comprising said support structure, vessel comprising such crane1 Oct 2026US 2026/0296846 A1GustoMSC B.V.
- Crane3 Sep 2026US 2026/0257894 A1Tadano Ltd.
- Crane20 Aug 2026US 2026/0242186 A1Tadano Ltd.
Most cited
By later US patents
- Self-erecting mobile crane42US 4,579,234 AAmerican Hoist & Derrick Company · 1986
- Rotary crane structure with a selective drive on power unit38US 3,955,684 AHarnischfeger Corporation · 1976
- Traveling attachment for ring supported lift crane34US 4,387,814 AThe Manitowoc Company, Inc. · 1983
- Heavy duty crane30US 4,394,911 AFMC Corporation · 1983
- Deflection reduction module for boom hoist cylinder of mobile crane30US 4,658,970 AKobe Steel, Ltd. · 1987