F16B 7/1481
With a gripping helical spring
Official title: {with a gripping helical spring}
F16B7/1481 (With a gripping helical spring) appears on 16 US grants and 11 published applications in this corpus.
Search patents in F16B- Granted patents
- 16
- Published applications
- 11
- Assignees
- 10
- Inventors
- 23
- Latest grant
- 14 Apr 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 2 |
| 2003 | 1 | 2 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 2 |
| 2018 | 1 | 0 |
| 2019 | 1 | 1 |
| 2020 | 1 | 1 |
By publication year. Applications have been published since 2001.
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Most cited
By later US patents
- Mechanical lock49US 4,577,730 AP. L. Porter Company · 1986
- Linear mechanical lock with one-piece lock housing34US 5,219,045 AP. L. Porter Company · 1993
- Improved friction lock27US 4,457,406 AP. L. Porter Company · 1984
- Device for locking rod against movement in extending and contracting directions27US 4,657,425 ANifco Inc. · 1987
- Coil spring or friction-lock mechanisms21US 5,150,771 AP. L. Porter Company · 1992