B66D 1/14
Power transmissions between power sources and drums or barrels
Official title: Power transmissions between power sources and drums or barrels {(including brakes, one-way brakes, one-way clutches, clutches activated alternately with brakes, fixed ratio gearing unless otherwise provided for in B66D1/16 - B66D1/24)}
B66D1/14 (Power transmissions between power sources and drums or barrels) appears on 474 US grants and 429 published applications in this corpus.
Search patents in B66D- Granted patents
- 474
- Published applications
- 429
- Assignees
- 275
- Inventors
- 830
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 10 | 0 |
| 1978 | 7 | 0 |
| 1979 | 6 | 0 |
| 1980 | 8 | 0 |
| 1981 | 2 | 0 |
| 1982 | 5 | 0 |
| 1983 | 8 | 0 |
| 1984 | 13 | 0 |
| 1985 | 4 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 6 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 6 | 0 |
| 1999 | 4 | 0 |
| 2000 | 7 | 0 |
| 2001 | 3 | 1 |
| 2002 | 5 | 5 |
| 2003 | 5 | 7 |
| 2004 | 6 | 3 |
| 2005 | 2 | 7 |
| 2006 | 5 | 11 |
| 2007 | 8 | 4 |
| 2008 | 5 | 15 |
| 2009 | 13 | 12 |
| 2010 | 15 | 19 |
| 2011 | 13 | 17 |
| 2012 | 16 | 12 |
| 2013 | 8 | 9 |
| 2014 | 8 | 17 |
| 2015 | 13 | 26 |
| 2016 | 13 | 29 |
| 2017 | 14 | 16 |
| 2018 | 37 | 35 |
| 2019 | 25 | 28 |
| 2020 | 36 | 36 |
| 2021 | 29 | 24 |
| 2022 | 14 | 23 |
| 2023 | 14 | 18 |
| 2024 | 18 | 21 |
| 2025 | 17 | 22 |
| 2026 | 6 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Vehicle winch and vehicle having vehicle winch16 Jun 2026US 12,655,001 B2T-Max (Hangzhou) Technology Co., Ltd.
- Hoist system and process implementing an emergency stopping brake2 Jun 2026US 12,643,775 B2Breeze-Eastern LLC
- Winch with advanced electrical and mechanical smart controls28 Apr 2026US 12,612,290 B2Warn Industries, Inc.
- Rescue hoist cable foul protection21 Apr 2026US 12,606,425 B2Hornet Acquisitionco, LLC
- Hand winch3 Mar 2026US 12,565,406 B2Hangzhou Rock Machinery Manufacture Co., Ltd
- Free Fall Winch8 Oct 2026US 2026/0307954 A1Liebherr-Components Biberach GmbH
- Guiding Mechanism and Worm Gear Winch10 Sep 2026US 2026/0265026 A1Topsun Intelligent Control Technology Research Institute (Hangzhou) Co., Ltd.
- Electric winch with autonomous clutch20 Aug 2026US 2026/0242188 A1Zhejiang Normal University
- Winch with automatic speed-changing mechanism20 Aug 2026US 2026/0242189 A1Zhejiang Normal University
- Steering mechanism of power winch clutch lever6 Aug 2026US 2026/0226947 A1Comeup Industries Inc.
Most cited
By later US patents
- Draw-works and method for operating the same154US 10,138,098 B2National Oilwell Varco Norway AS · 2018
- Winch having split housing and drive components73US 4,736,929 AWarn Industries, Inc. · 1988
- Remote controlled winch69US 5,522,582 AWarn Industries, Inc. · 1996
- Manual disengaging and self-engaging clutch65US 7,891,641 B1Ramsey Winch Company · 2011
- Winch58US 4,004,780 AWarn Industries, Inc. · 1977