B66D 1/20
Chain, belt, or friction drives
Official title: Chain, belt, or friction drives, e.g. incorporating sheaves {of fixed or variable ratio}
B66D1/20 (Chain, belt, or friction drives) appears on 48 US grants and 49 published applications in this corpus.
Search patents in B66D- Granted patents
- 48
- Published applications
- 49
- Assignees
- 40
- Inventors
- 97
- Latest grant
- 2 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 2 |
| 2012 | 2 | 1 |
| 2013 | 1 | 2 |
| 2014 | 0 | 2 |
| 2015 | 3 | 1 |
| 2016 | 2 | 5 |
| 2017 | 2 | 0 |
| 2018 | 3 | 3 |
| 2019 | 1 | 2 |
| 2020 | 1 | 1 |
| 2021 | 4 | 8 |
| 2022 | 3 | 1 |
| 2023 | 3 | 6 |
| 2024 | 4 | 3 |
| 2025 | 3 | 6 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Winch Assembly of a Load Handling Device6 Nov 2025US 2025/0340372 A1Ocado Innovation Limited
- 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