B25B 27/306
By tensioning coil springs
Official title: {by tensioning coil springs}
B25B27/306 (By tensioning coil springs) appears on 45 US grants and 22 published applications in this corpus.
Search patents in B25B- Granted patents
- 45
- Published applications
- 22
- Assignees
- 16
- Inventors
- 69
- Latest grant
- 8 Nov 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 2 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 2 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 4 |
| 2016 | 2 | 0 |
| 2017 | 0 | 1 |
| 2018 | 2 | 0 |
| 2019 | 0 | 0 |
| 2020 | 1 | 3 |
| 2021 | 0 | 1 |
| 2022 | 4 | 1 |
| 2023 | 0 | 2 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Negator spring tool and method8 Nov 2022US 11,491,619 B2The Government of the United States of America, as represented by the Secretary of Homeland Security
- Vehicle suspension spring spreader18 Oct 2022US 11,472,011 B1
- Negator spring tool for paratroop door22 Mar 2022US 11,279,011 B1The Government of the United States of America, as represented by the Secretary of Homeland Security
- Spring winding apparatus and method of use11 Jan 2022US 11,219,992 B2James L. Frank Door Service Inc.
- Garbage disposal installation tool5 May 2020US 10,639,773 B2Fundi, LLC
- Torsion spring tensioning tool10 Sep 2026US 2026/0264204 A1Assa Abloy Entrance Systems AB
- Torsion spring tensioning tool19 Feb 2026US 2026/0048490 A1Assa Abloy Entrance Systems AB
- Torsion spring tensioning tool21 Dec 2023US 2023/0405780 A1Assa Abloy Entrance Systems AB
- Extension spring assembly and method for manufacturing the same19 Jan 2023US 2023/0013954 A1S3 Enterprises Inc.
- Negator spring tool and method26 May 2022US 2022/0161403 A1The Government of the United States of America, as represented by the Secretary of Homeland Security
Most cited
By later US patents