E02F 3/388
Mechanical locking means for booms or arms against rotation
Official title: {Mechanical locking means for booms or arms against rotation, e.g. during transport of the machine (transporting-cranes B66C23/344)}
E02F3/388 (Mechanical locking means for booms or arms against rotation) appears on 59 US grants and 28 published applications in this corpus.
Search patents in E02F- Granted patents
- 59
- Published applications
- 28
- Assignees
- 31
- Inventors
- 116
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 2 | 2 |
| 2005 | 0 | 0 |
| 2006 | 1 | 3 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 3 |
| 2010 | 2 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 3 |
| 2014 | 0 | 1 |
| 2015 | 2 | 0 |
| 2016 | 2 | 3 |
| 2017 | 2 | 1 |
| 2018 | 1 | 2 |
| 2019 | 1 | 0 |
| 2020 | 0 | 4 |
| 2021 | 1 | 0 |
| 2022 | 1 | 0 |
| 2023 | 1 | 4 |
| 2024 | 1 | 0 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Compact actuated shear pin21 Oct 2025US 12,449,000 B2Caterpillar Inc.
- Control system for actuated pins10 Jun 2025US 12,325,972 B2Caterpillar Inc.
- System and method for load control of a lift arm13 Feb 2024US 11,898,326 B2CNH Industrial America LLC
- Piston lock system for agricultural equipment18 Jul 2023US 11,703,068 B2CNH Industrial America LLC
- Piston lock system for agricultural equipment18 Oct 2022US 11,473,600 B1CNH Industrial America LLC
- System and method for load control of a lift arm2 Nov 2023US 2023/0349131 A1CNH Industrial America LLC
- Control system for actuated pins5 Oct 2023US 2023/0313486 A1Caterpillar Underground Mining Pty. Ltd.
- Compact actuated shear pin25 May 2023US 2023/0160419 A1Caterpillar Underground Mining Pty. Ltd.
- Piston lock system for agricultural equipment11 May 2023US 2023/0145934 A1CNH Industrial America LLC
- Locking arrangement for a construction machine31 Dec 2020US 2020/0407937 A1Guangxi LiuGong Machinery Co., Ltd.
Most cited
By later US patents
- Anti-lowering device for a boom loader36US 3,995,761 ASperry Rand Corporation · 1976
- Lift arm safety bar31US 3,982,648 AInternational Harvester Company · 1976
- Boom arm support lock29US 4,039,093 AJ. I. Case Company · 1977
- Bulldozer and backhoe lock device22US 4,373,851 A1983
- Automatic locking pin retraction mechanism18US 4,388,038 ASperry Corporation · 1983