B21K 1/707
Self-locking nuts
Official title: {Self-locking nuts}
B21K1/707 (Self-locking nuts) appears on 22 US grants and 5 published applications in this corpus.
Search patents in B21K- Granted patents
- 22
- Published applications
- 5
- Assignees
- 13
- Inventors
- 29
- Latest grant
- 7 Dec 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Nut with polygonal section7 Dec 2021US 11,193,524 B2HEWI G. Winker GmbH & Co. KG
- Self-locking nipple for wheel spoke and method and apparatus for manufacturing same28 Aug 2018US 10,059,147 B2Sapim
- Nut18 Apr 2017US 9,624,962 B2HEWI G. Winker GmbH & Co. KG
- Castellated flange nut10 Apr 2001US 6,213,885 B1Erich Neumayer GmbH & Co. KG
- Nut free from inadvertent loosening and a method of making same27 Oct 1998US 5,827,027 AHard Lock Kogyo Co.
- Screw-nut blank for producing a securing nut15 Aug 2024US 2024/0269731 A1Sf Handels- Und Besitzgesellschaft Mbh
- Nut8 Jun 2017US 2017/0159696 A1HEWI G. Winker GmbH & Co. KG
- Self-locking nipple for wheel spoke and method and apparatus for manufacturing same29 Jan 2015US 2015/0030411 A1Sapim
- Nut1 Aug 2013US 2013/0195581 A1HEWI G. Winker GmbH & Co. KG
- Locking shear nut20 Dec 2007US 2007/0292233 A1
Most cited
By later US patents
- Nut25US 9,624,962 B2HEWI G. Winker GmbH & Co. KG · 2017
- Threaded fastener, method of fabrication thereof and method of supporting a mine roof using such a fastener19US 5,282,698 AThe Eastern Company · 1994
- Nut free from inadvertent loosening and a method of making same17US 5,827,027 AHard Lock Kogyo Co. · 1998
- Self-locking blind fastener15US 4,778,318 AAvdel Limited · 1988
- Lock nut and method for making same13US 4,826,376 ASlip-on Lock Nut Company · 1989