A47C 20/042
By means of screw-and-nut mechanism
Official title: {by means of screw-and-nut mechanism}
A47C20/042 (By means of screw-and-nut mechanism) appears on 34 US grants and 37 published applications in this corpus.
Search patents in A47C- Granted patents
- 34
- Published applications
- 37
- Assignees
- 21
- Inventors
- 58
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 2 |
| 2009 | 2 | 1 |
| 2010 | 0 | 2 |
| 2011 | 0 | 2 |
| 2012 | 0 | 1 |
| 2013 | 2 | 0 |
| 2014 | 2 | 1 |
| 2015 | 1 | 3 |
| 2016 | 0 | 1 |
| 2017 | 1 | 1 |
| 2018 | 3 | 4 |
| 2019 | 0 | 2 |
| 2020 | 1 | 2 |
| 2021 | 3 | 6 |
| 2022 | 3 | 4 |
| 2023 | 1 | 1 |
| 2024 | 3 | 1 |
| 2025 | 0 | 0 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Adjustable sleep system with independent sections28 Apr 2026US 12,611,042 B2
- Driving mechanism and adjustable bed therewith20 Jan 2026US 12,527,408 B2Nisco Co., Ltd
- Portable medical lift and positioning device21 May 2024US 11,986,430 B2
- Some functional parts of operating table and operating table9 Apr 2024US 11,951,048 B2Trumpf Medizin Systeme GmbH + Co. KG
- Bed and frame assembly26 Mar 2024US 11,937,699 B2
- Adjustable sleep system with independent sections19 Mar 2026US 2026/0076485 A1
- Operating table having emergency mode4 Jul 2024US 2024/0216204 A1Trumpf Medizin Systeme GmbH + Co. KG
- Bed And Frame Assembly23 Feb 2023US 2023/0059520 A1
- Portable medical lift and positioning device and adapter therefore1 Dec 2022US 2022/0378637 A1Modern Healthcare Equipment LLC
- Driving mechanism and adjustable bed therewith24 Mar 2022US 2022/0087439 A1Nisco Co., Ltd
Most cited
By later US patents
- Sectional bed94US 4,183,109 A1980
- Single motor fully adjustable bed43US 6,000,077 A1999
- Adjustable bed and interchangeable drive unit therefor42US 5,095,562 AEqui-Tron, Inc. · 1992
- Hook type fowler for hospital stretchers31US 4,222,131 AChemed Corporation · 1980
- Drive unit and clutch assembly for an adjustable bed25US 5,269,031 A1993