B66D 3/046
Openable pulley blocks
Official title: {Openable pulley blocks}
B66D3/046 (Openable pulley blocks) appears on 51 US grants and 40 published applications in this corpus.
Search patents in B66D- Granted patents
- 51
- Published applications
- 40
- Assignees
- 32
- Inventors
- 79
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 3 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 2 | 2 |
| 2006 | 0 | 3 |
| 2007 | 2 | 0 |
| 2008 | 2 | 1 |
| 2009 | 1 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 2 |
| 2012 | 0 | 1 |
| 2013 | 0 | 3 |
| 2014 | 1 | 0 |
| 2015 | 2 | 2 |
| 2016 | 0 | 1 |
| 2017 | 1 | 1 |
| 2018 | 3 | 2 |
| 2019 | 1 | 2 |
| 2020 | 2 | 3 |
| 2021 | 3 | 4 |
| 2022 | 3 | 6 |
| 2023 | 1 | 1 |
| 2024 | 4 | 5 |
| 2025 | 3 | 0 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Wilderness lifting system17 Feb 2026US 12,552,646 B2
- Combination rope ascender and pulley13 Jan 2026US 12,521,608 B2International Safety Components Ltd
- Double pulley, rescue device comprising such double pulley and method for using such rescue device30 Sep 2025US 12,428,273 B2Zedel
- Hoisting and lowering device15 Jul 2025US 12,358,765 B2
- Pulley block8 Apr 2025US 12,269,717 B2
- Multifunction device equipped with a locking cam and a pulley for a safety rope12 Dec 2024US 2024/0408420 A1Aludesign S.P.A.
- Housing for a winch ring7 Nov 2024US 2024/0367953 A1
- Wilderness lifting system31 Oct 2024US 2024/0359955 A1
- Hoisting and lowering device20 Jun 2024US 2024/0199391 A1Grid Manufacturing Corporation
- Combination rope ascender and pulley8 Feb 2024US 2024/0042282 A1International Safety Components Ltd
Most cited
By later US patents
- Combination descender, pulley and force limiting rope brake28US 7,658,264 B22010
- Auxiliary winch for all terrain vehicle27US 5,054,745 A1991
- Cable support block22US 6,315,269 B1Electro Saguenay LtéE · 2001
- Splittable block on a derrick20US 6,926,103 B1Itrec B V · 2005
- Compensation and hoisting apparatus20US 6,926,260 B1Itrec B V · 2005