B66D 1/50
For maintaining predetermined rope, cable, or chain tension
Official title: for maintaining predetermined rope, cable, or chain tension, e.g. in ropes or cables for towing craft, in chains for anchors; Warping or mooring winch-cable tension control
B66D1/50 (For maintaining predetermined rope, cable, or chain tension) appears on 167 US grants and 143 published applications in this corpus.
Search patents in B66D- Granted patents
- 167
- Published applications
- 143
- Assignees
- 142
- Inventors
- 391
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 2 |
| 2003 | 3 | 1 |
| 2004 | 0 | 3 |
| 2005 | 1 | 4 |
| 2006 | 0 | 0 |
| 2007 | 3 | 0 |
| 2008 | 3 | 1 |
| 2009 | 2 | 3 |
| 2010 | 0 | 4 |
| 2011 | 3 | 2 |
| 2012 | 2 | 6 |
| 2013 | 4 | 5 |
| 2014 | 3 | 6 |
| 2015 | 2 | 4 |
| 2016 | 5 | 13 |
| 2017 | 6 | 6 |
| 2018 | 8 | 6 |
| 2019 | 13 | 16 |
| 2020 | 11 | 19 |
| 2021 | 11 | 10 |
| 2022 | 13 | 8 |
| 2023 | 9 | 8 |
| 2024 | 3 | 7 |
| 2025 | 10 | 3 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Gripping device30 Jun 2026US 12,668,421 B2Ocado Innovation Limited
- Robotic oyster aquaculture system, technique, and intelligent cage hoister31 Mar 2026US 12,588,663 B1
- Hoist apparatus comprising a monitoring device and management system using the hoist apparatus17 Feb 2026US 12,552,647 B2Tractel S.A.
- Estimation apparatus and crane9 Dec 2025US 12,492,104 B2Tadano Ltd.
- Apparatus for winding and pulling a rope line at constant speed2 Dec 2025US 12,486,147 B2White's Welding, LLC
- Winch management system13 Aug 2026US 2026/0233980 A1
- Tension control method for tether4 Jun 2026US 2026/0152267 A1Toyota Jidosha Kabushiki Kaisha
- Apparatus and method for transporting wood in steep terrain5 Feb 2026US 2026/0033441 A1Ecoforst GmbH
- Cable Winch29 Jan 2026US 2026/0028208 A1Infravision Holdings Pty Ltd.
- Winch Control System8 Jan 2026US 2026/0008655 A1Polaris Industries Inc.
Most cited
By later US patents
- System for calculating and displaying cable payout from a rotatable drum storage device56US 4,475,163 AContinental Emsco Company · 1984
- Heave compensated wireline logging winch system and method of use50US 6,216,789 B1Schlumberger Technology Corporation · 2001
- Electronic control for winch tension40US 7,900,893 B2Schlumberger Technology Corporation · 2011
- Winch assembly35US 5,398,911 APace Engineering Pty. Limited · 1995
- Constant tensioner for a seismic marine cable31US 4,570,245 AWestern Geophysical Company of America · 1986