B25B 27/26
Compressing the springs
Official title: compressing the springs
B25B27/26 (Compressing the springs) appears on 69 US grants and 25 published applications in this corpus.
Search patents in B25B- Granted patents
- 69
- Published applications
- 25
- Assignees
- 22
- Inventors
- 106
- Latest grant
- 3 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 5 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 2 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 3 | 2 |
| 2006 | 0 | 1 |
| 2007 | 1 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 3 |
| 2010 | 2 | 0 |
| 2011 | 1 | 2 |
| 2012 | 1 | 1 |
| 2013 | 2 | 0 |
| 2014 | 0 | 0 |
| 2015 | 3 | 3 |
| 2016 | 3 | 1 |
| 2017 | 1 | 1 |
| 2018 | 1 | 0 |
| 2019 | 1 | 3 |
| 2020 | 1 | 1 |
| 2021 | 2 | 0 |
| 2022 | 1 | 0 |
| 2023 | 1 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
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- Valve Spring Lock Plate Installation and Removal Tool9 Oct 2025US 2025/0312903 A1
- Apparatus for valve spring compression in an internal combustion engine and methods of use15 May 2025US 2025/0153325 A1
- Spring compressor19 Oct 2023US 2023/0330792 A1Fox Factory, Inc.
- Split Nut Valve Seat Puller16 Jul 2020US 2020/0223043 A1
- Engine Servicing System25 Apr 2019US 2019/0118358 A1
Most cited
By later US patents
- Valve spring compression tool24US 4,976,280 A1990
- Gasket removal and insertion tools for refrigeration hoses17US 9,718,177 B12017
- Tool for compressing valve springs14US 4,567,634 A1986
- Tool for removing valve spring retainer of a valve assembly14US 5,042,128 A1991
- Situ valve spring compression tool12US 3,977,064 ACummins Engine Company, Inc. · 1976