B66D
Capstans
Official title: CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS (winding or unwinding ropes or cables for feeding or storage purposes B65H; rope or cable winding or unwinding mechanisms for lifts B66B)
B66D (Capstans) appears on 3,948 US grants and 3,096 published applications in this corpus.
Search patents in B66D- Granted patents
- 3,948
- Published applications
- 3,096
- Assignees
- 1,642
- Inventors
- 6,220
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 99 | 0 |
| 1977 | 81 | 0 |
| 1978 | 67 | 0 |
| 1979 | 48 | 0 |
| 1980 | 66 | 0 |
| 1981 | 49 | 0 |
| 1982 | 40 | 0 |
| 1983 | 36 | 0 |
| 1984 | 80 | 0 |
| 1985 | 51 | 0 |
| 1986 | 54 | 0 |
| 1987 | 51 | 0 |
| 1988 | 40 | 0 |
| 1989 | 46 | 0 |
| 1990 | 33 | 0 |
| 1991 | 29 | 0 |
| 1992 | 45 | 0 |
| 1993 | 37 | 0 |
| 1994 | 44 | 0 |
| 1995 | 39 | 0 |
| 1996 | 40 | 0 |
| 1997 | 48 | 0 |
| 1998 | 53 | 0 |
| 1999 | 64 | 0 |
| 2000 | 70 | 0 |
| 2001 | 45 | 13 |
| 2002 | 63 | 59 |
| 2003 | 80 | 58 |
| 2004 | 44 | 59 |
| 2005 | 42 | 75 |
| 2006 | 66 | 76 |
| 2007 | 64 | 62 |
| 2008 | 64 | 101 |
| 2009 | 85 | 94 |
| 2010 | 82 | 104 |
| 2011 | 80 | 102 |
| 2012 | 58 | 100 |
| 2013 | 70 | 144 |
| 2014 | 88 | 130 |
| 2015 | 102 | 138 |
| 2016 | 113 | 157 |
| 2017 | 126 | 151 |
| 2018 | 168 | 194 |
| 2019 | 197 | 214 |
| 2020 | 211 | 209 |
| 2021 | 174 | 183 |
| 2022 | 135 | 175 |
| 2023 | 141 | 141 |
| 2024 | 143 | 134 |
| 2025 | 139 | 117 |
| 2026 | 58 | 106 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
Recent patents
- Cow—wire spooler6 Oct 2026US 12,753,052 B2Dish Wireless L. L. C.
- Modular pulley block22 Sep 2026US 12,741,853 B2ROPE Savers LLC
- Moveable winch control system15 Sep 2026US 12,735,304 B2Bpg-Arrowhead Winch Inc.
- Article elevating device8 Sep 2026US 12,733,438 B2Daifuku Co., Ltd.
- Forestry winch1 Sep 2026US 12,722,945 B2
- Free Fall Winch8 Oct 2026US 2026/0307954 A1Liebherr-Components Biberach GmbH
- Field-deployable modular snatch block device8 Oct 2026US 2026/0307955 A1
- Air hoist, particularly adapted for use in a shipyard8 Oct 2026US 2026/0307956 A1
- Wind turbine mounted crane1 Oct 2026US 2026/0296845 A1Liftra IP Aps
- Frame for trenchless pipe replacement system and method1 Oct 2026US 2026/0298370 A1TT Technologies, Inc.
Most cited
By later US patents
- Release mechanism for a traction apparatus acting on a cable which passes therethrough1,439US 4,438,659 ATractel S. A. · 1984
- Method of actively controlling winch swing via modulated uptake and release324US 9,422,139 B1Google Inc. · 2016
- AC powered service rig160US 7,717,193 B2Nabors Canada · 2010
- Draw-works and method for operating the same154US 10,138,098 B2National Oilwell Varco Norway AS · 2018
- Cable pulling device119US 4,635,875 A1987