B66B 9/0815
Rack and pinion, friction rollers
Official title: {Rack and pinion, friction rollers}
B66B9/0815 (Rack and pinion, friction rollers) appears on 48 US grants and 44 published applications in this corpus.
Search patents in B66B- Granted patents
- 48
- Published applications
- 44
- Assignees
- 29
- Inventors
- 96
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 2 |
| 2003 | 0 | 1 |
| 2004 | 2 | 1 |
| 2005 | 0 | 1 |
| 2006 | 1 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 1 |
| 2011 | 1 | 1 |
| 2012 | 1 | 2 |
| 2013 | 2 | 0 |
| 2014 | 0 | 4 |
| 2015 | 2 | 2 |
| 2016 | 1 | 0 |
| 2017 | 1 | 5 |
| 2018 | 3 | 2 |
| 2019 | 2 | 3 |
| 2020 | 3 | 3 |
| 2021 | 4 | 2 |
| 2022 | 2 | 5 |
| 2023 | 5 | 3 |
| 2024 | 2 | 1 |
| 2025 | 0 | 1 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Elevator system, kit and method13 Jan 2026US 12,522,472 B2
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- Stairlift overspeed safety system2 Jul 2024US 12,024,402 B2Harmar Mobility, LLC
- Stairlift5 Dec 2023US 11,834,302 B2Bruno Independent Living Aids, Inc.
- Stair lift systems and methods for assembling, installing, and using such systems17 Sep 2026US 2026/0274617 A1Leaf Home Safety Solutions, LLC
- Elevator system, kit and method28 Aug 2025US 2025/0270071 A1
- Stair lift systems and methods for assembling, installing, and using such systems19 Dec 2024US 2024/0417218 A1Leaf Home Safety Solutions, LLC
- Stairlift Overspeed Safety System9 Nov 2023US 2023/0356976 A1Harmar Mobility, LLC
- Overspeed governor for a stairlift26 Oct 2023US 2023/0339725 A1Otolift Trapliften B.V.
Most cited
By later US patents
- Stairway chairlift device31US 5,230,405 A1993
- 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
- Stairway lift20US 5,476,155 ADaido Kogyo Co., Ltd. · 1995
- Portable scissor-lift-assembly19US 7,093,691 B12006