B66B 11/0446
With screw-nut or worm-screw gear
Official title: {with screw-nut or worm-screw gear}
B66B11/0446 (With screw-nut or worm-screw gear) appears on 21 US grants and 10 published applications in this corpus.
Search patents in B66B- Granted patents
- 21
- Published applications
- 10
- Assignees
- 12
- Inventors
- 34
- Latest grant
- 26 Dec 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 2 |
| 2015 | 0 | 0 |
| 2016 | 3 | 1 |
| 2017 | 1 | 1 |
| 2018 | 1 | 2 |
| 2019 | 1 | 1 |
| 2020 | 0 | 1 |
| 2021 | 2 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
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- Autonomous mobile lift31 Aug 2021US 11,104,547 B2
- Elevator control system2 Mar 2021US 10,934,130 B2Otis Elevator Company
- Lateral transfer station for elevator having a magnetic screw propulsion system17 Dec 2019US 10,508,004 B2Otis Elevator Company
- Embedded safety elevator27 Mar 2018US 9,926,171 B2Shenzhen Shengshi Elevator Co.,Ltd
- Distributed Screw and Nut Drive Systems with Synchronized Motors for Lifts23 May 2024US 2024/0166470 A1
- Lifting assembly, jump elevator and jumping method11 Jun 2020US 2020/0180912 A1Otis Elevator Company
- Elevating cage apparatus with alternative powered or manual input17 Jan 2019US 2019/0016563 A1Safe Rack LLC
- Autonomous mobile lift8 Nov 2018US 2018/0319630 A1
- Elevator control system5 Jul 2018US 2018/0186595 A1Otis Elevator Company
Most cited
By later US patents
- Integrated elevator drive machine and brake assembly17US 5,669,469 AOtis Elevator Company · 1997
- Disc brake/load weighing assembly for elevator drive sheave15US 5,156,239 AOtis Elevator Company · 1992
- Seal for elevator drive mechanism12US 4,327,924 AThe Texacone Company · 1982
- Geared elevator system12US 5,433,294 ADelaware Capital Formation, Inc. · 1995
- Disc brake elevator drive sheave11US 5,201,821 AOtis Elevator Company · 1993