B66D 1/52
For varying rope or cable tension
Official title: for varying rope or cable tension, e.g. when recovering craft from water
B66D1/52 (For varying rope or cable tension) appears on 90 US grants and 80 published applications in this corpus.
Search patents in B66D- Granted patents
- 90
- Published applications
- 80
- Assignees
- 77
- Inventors
- 189
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 6 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 1 |
| 2005 | 2 | 4 |
| 2006 | 1 | 0 |
| 2007 | 1 | 2 |
| 2008 | 0 | 2 |
| 2009 | 1 | 3 |
| 2010 | 4 | 2 |
| 2011 | 1 | 3 |
| 2012 | 1 | 0 |
| 2013 | 1 | 6 |
| 2014 | 1 | 2 |
| 2015 | 2 | 7 |
| 2016 | 4 | 8 |
| 2017 | 5 | 4 |
| 2018 | 6 | 6 |
| 2019 | 7 | 10 |
| 2020 | 7 | 5 |
| 2021 | 5 | 4 |
| 2022 | 3 | 4 |
| 2023 | 2 | 2 |
| 2024 | 3 | 1 |
| 2025 | 3 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hoist system and process implementing an emergency stopping brake2 Jun 2026US 12,643,775 B2Breeze-Eastern LLC
- System and method for deploying and recovering an autonomous underwater craft by a recovery vehicle towed by a ship, underwater exploration assembly4 Nov 2025US 12,459,605 B2Ixblue
- Cable winch and hoisting device having such a cable winch4 Mar 2025US 12,240,741 B2Liebherr-Components Biberach GmbH
- Active compensation system, intended to compensate at least partially for the effect of a wave motion on a load28 Jan 2025US 12,208,995 B2Reel
- System for transferring an object from a ship to an offshore structure6 Aug 2024US 12,054,368 B2Ørsted Wind Power A/S
- Method and system for compensating motion of a suspended object13 Aug 2026US 2026/0233977 A1Delta Laboratories Holding B.V.
- System for hook speed control of pipelayers16 Jul 2026US 2026/0200707 A1Caterpillar Inc.
- Winch automation device, associated automated winch and associated installation method10 Jul 2025US 2025/0223138 A1
- System and method for deploying and recovering an autonomous underwater craft by a recovery vehicle towed by a ship, underwater exploration assembly14 Mar 2024US 2024/0083553 A1Ixblue
- Winch delivery system6 Jul 2023US 2023/0211883 A1Flyby Robotics, Inc.
Most cited
By later US patents
- Apparatus for use in raising or lowering a load in a condition of relative motion37US 4,025,055 A1977
- Winding mechanism31US 4,132,387 AClarke Chapman Limited · 1979
- Apparatus and method for wave motion compensation and hoist control for marine winches27US 4,547,857 A1985
- Constant tension hoisting system26US 4,624,450 APACCAR Inc · 1986
- Heave motion compensation apparatus25US 4,448,396 AAmerican Hoist & Derrick Company · 1984