B66B 9/0838
Levelling gears
Official title: {Levelling gears}
B66B9/0838 (Levelling gears) appears on 35 US grants and 28 published applications in this corpus.
Search patents in B66B- Granted patents
- 35
- Published applications
- 28
- Assignees
- 23
- Inventors
- 64
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 2 |
| 2006 | 1 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 2 |
| 2009 | 0 | 1 |
| 2010 | 2 | 2 |
| 2011 | 0 | 2 |
| 2012 | 1 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 3 |
| 2015 | 0 | 0 |
| 2016 | 2 | 0 |
| 2017 | 1 | 4 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 2 | 0 |
| 2021 | 1 | 1 |
| 2022 | 1 | 3 |
| 2023 | 2 | 2 |
| 2024 | 0 | 3 |
| 2025 | 4 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method to determine a speed profile for a stairlift4 Nov 2025US 12,459,783 B2TK Home Solutions B.V.
- Method to operate a stairlift16 Sep 2025US 12,415,704 B2TK Home Solutions B.V.
- Apparatus for transporting a load, in particular a stairlift1 Apr 2025US 12,264,043 B2Otolift Trapliften B.V.
- Multi-function stairlift connectivity system28 Jan 2025US 12,208,993 B2Bruno Independent Living Aids, Inc.
- Stairlift5 Dec 2023US 11,834,302 B2Bruno Independent Living Aids, Inc.
- Method to determine a speed profile for a stairlift29 Aug 2024US 2024/0286870 A1TK Home Solutions B.V.
- Method to operate a stairlift1 Aug 2024US 2024/0253945 A1TK Home Solutions B.V.
- Apparatus for transporting a load, in particular a stairlift28 Mar 2024US 2024/0101393 A1Otolift Trapliften B.V.
- A stairlift7 Sep 2023US 2023/0278830 A1
- An apparatus for transporting a load from a first to a second level, in particular a stairlift11 May 2023US 2023/0145802 A1Otolift Trapliften B.V.
Most cited
By later US patents
- Chairlift with positioning carriage and swivel mechanism with safety interlock35US 5,533,594 ARicon Corporation · 1996
- Wheelchair transfer mechanism25US 5,050,708 A1991
- Elevator System22US 5,572,930 A1996
- Running gear for a drive mechanism for a rail-guided displacement device22US 6,155,382 AThyssen De Reus B.V. · 2000
- Self-leveling inclined lift device20US 5,967,265 A1999