B66D 1/26
Rope, cable, or chain winding mechanisms: having several drums or barrels
Official title: having several drums or barrels
B66D1/26 (Rope, cable, or chain winding mechanisms: having several drums or barrels) appears on 133 US grants and 128 published applications in this corpus.
Search patents in B66D- Granted patents
- 133
- Published applications
- 128
- Assignees
- 82
- Inventors
- 250
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 5 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 6 |
| 2007 | 2 | 1 |
| 2008 | 3 | 2 |
| 2009 | 7 | 4 |
| 2010 | 2 | 8 |
| 2011 | 5 | 5 |
| 2012 | 2 | 3 |
| 2013 | 3 | 7 |
| 2014 | 4 | 11 |
| 2015 | 4 | 10 |
| 2016 | 6 | 7 |
| 2017 | 10 | 7 |
| 2018 | 11 | 3 |
| 2019 | 9 | 6 |
| 2020 | 3 | 3 |
| 2021 | 6 | 13 |
| 2022 | 7 | 6 |
| 2023 | 4 | 8 |
| 2024 | 3 | 7 |
| 2025 | 5 | 5 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Dual line drawworks2 Jun 2026US 12,644,341 B2Helmerich & Payne, Inc.
- CV camera cable wrap sensor3 Feb 2026US 12,540,059 B2TAIT Global LLC
- Drum spooling system with load-bearing line protective wrap21 Oct 2025US 12,448,257 B2
- Modular lift system5 Aug 2025US 12,378,100 B2Automatic Devices Company
- Transfer device for maintaining an electrical or optical connection20 May 2025US 12,304,772 B2Thales
- Modular self-climbing hoist10 Sep 2026US 2026/0263959 A1
- Cv camera cable wrap sensor21 May 2026US 2026/0138855 A1TAIT Global LLC
- Drum spooling system with load-bearing line protective wrap12 Feb 2026US 2026/0042645 A1Protech Theatrical Services, Inc.
- Modular lift system6 Nov 2025US 2025/0340409 A1Automatic Devices Company
- Drive transmission device and lifting device equipped with the same9 Oct 2025US 2025/0313435 A1Daifuku Co., Ltd.
Most cited
By later US patents
- Draw-works and method for operating the same154US 10,138,098 B2National Oilwell Varco Norway AS · 2018
- Lift for lifting and lowering body96US 6,049,923 A2000
- Multifunctional winch drum drive system39US 7,270,312 B1Growth Innovation, LLC · 2007
- Stage set lift apparatus32US 5,106,057 AFeller Precision, Inc. · 1992
- Bi-directional winch27US 7,273,207 B22007