E02F 3/3609
Of the quick acting type
Official title: {of the quick acting type, e.g. controlled from the operator seat (quick-acting couplers to connect booms or arms to tractors E02F3/627; quick-acting couplers for machines mounted on tractor A01B59/06; couplings of the quick-acting type per se F16L37/00)}
E02F3/3609 (Of the quick acting type) appears on 817 US grants and 755 published applications in this corpus.
Search patents in E02F- Granted patents
- 817
- Published applications
- 755
- Assignees
- 315
- Inventors
- 1,328
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 5 | 0 |
| 1978 | 11 | 0 |
| 1979 | 1 | 0 |
| 1980 | 7 | 0 |
| 1981 | 7 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 6 | 0 |
| 1985 | 2 | 0 |
| 1986 | 6 | 0 |
| 1987 | 5 | 0 |
| 1988 | 5 | 0 |
| 1989 | 13 | 0 |
| 1990 | 6 | 0 |
| 1991 | 7 | 0 |
| 1992 | 13 | 0 |
| 1993 | 10 | 0 |
| 1994 | 8 | 0 |
| 1995 | 11 | 0 |
| 1996 | 13 | 0 |
| 1997 | 14 | 0 |
| 1998 | 13 | 0 |
| 1999 | 14 | 0 |
| 2000 | 16 | 0 |
| 2001 | 21 | 6 |
| 2002 | 22 | 20 |
| 2003 | 18 | 17 |
| 2004 | 10 | 14 |
| 2005 | 16 | 17 |
| 2006 | 20 | 19 |
| 2007 | 16 | 26 |
| 2008 | 9 | 15 |
| 2009 | 13 | 23 |
| 2010 | 25 | 33 |
| 2011 | 20 | 24 |
| 2012 | 17 | 27 |
| 2013 | 24 | 25 |
| 2014 | 22 | 31 |
| 2015 | 24 | 25 |
| 2016 | 18 | 35 |
| 2017 | 23 | 38 |
| 2018 | 30 | 31 |
| 2019 | 33 | 32 |
| 2020 | 28 | 53 |
| 2021 | 32 | 41 |
| 2022 | 38 | 40 |
| 2023 | 33 | 34 |
| 2024 | 33 | 63 |
| 2025 | 44 | 35 |
| 2026 | 21 | 31 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- E02F 3/3663Hydraulically-operated374
- E02F 3/3622With a hook and a locking element acting on a pin217
- E02F 3/3627With a hook and a longitudinal locking element205
- E02F 3/3618With two separating hooks174
- E02F 3/3654With energy coupler139
- E02F 3/365With redundant latching means129
- E02F 3/3631With a hook and a transversal locking element124
- E02F 3/3672Where disengagement is effected by a mechanical lever or handle120
All 14 subgroupsShow fewer
- E02F 3/364Using wedges119
- E02F 3/3636Using two or four movable transversal pins118
- E02F 3/3668Where engagement is effected by a mechanical lever or handle93
- E02F 3/3645With auto-engagement means for automatic snap-on of the tool coupler part61
- E02F 3/3659Electrically-operated37
- E02F 3/3613With means for absorbing any play therebetween30
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Most cited
By later US patents
- Quick-fitting coupling for simultaneously connecting or disconnecting a plurality of couplings87US 5,316,347 A1994
- Skid steer loader adaptor79US 5,098,252 AFord New Holland, Inc. · 1992
- Method for the extraction of sealed cartridges for the preparation of beverages75US 4,806,375 ANestec S. A. · 1989
- Quick attach implement coupler72US 5,082,065 ASupport Services International, Inc. · 1992
- Quick attachment carrier assembly71US 4,436,477 AFarmhand, Inc. · 1984