F16B 43/00
Washers or equivalent devices
Official title: Washers or equivalent devices; Other devices for supporting bolt-heads or nuts (circlips F16B21/18; {for indicating tensile load F16B31/02; forming a whole with the bolt or nut F16B33/00; locking bolts or nuts by means of a fixed plate or ring, or washer-like resilient plates F16B39/10, F16B39/24})
F16B43/00 (Washers or equivalent devices) appears on 1,471 US grants and 1,545 published applications in this corpus.
Search patents in F16B- Granted patents
- 1,471
- Published applications
- 1,545
- Assignees
- 897
- Inventors
- 2,911
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 3 | 0 |
| 1978 | 6 | 0 |
| 1979 | 6 | 0 |
| 1980 | 9 | 0 |
| 1981 | 10 | 0 |
| 1982 | 8 | 0 |
| 1983 | 7 | 0 |
| 1984 | 10 | 0 |
| 1985 | 4 | 0 |
| 1986 | 5 | 0 |
| 1987 | 14 | 0 |
| 1988 | 15 | 0 |
| 1989 | 21 | 0 |
| 1990 | 25 | 0 |
| 1991 | 25 | 0 |
| 1992 | 17 | 0 |
| 1993 | 16 | 0 |
| 1994 | 13 | 0 |
| 1995 | 14 | 0 |
| 1996 | 12 | 0 |
| 1997 | 10 | 0 |
| 1998 | 13 | 0 |
| 1999 | 13 | 0 |
| 2000 | 26 | 0 |
| 2001 | 14 | 2 |
| 2002 | 25 | 33 |
| 2003 | 22 | 42 |
| 2004 | 25 | 46 |
| 2005 | 21 | 48 |
| 2006 | 19 | 29 |
| 2007 | 22 | 26 |
| 2008 | 16 | 38 |
| 2009 | 5 | 36 |
| 2010 | 26 | 42 |
| 2011 | 19 | 47 |
| 2012 | 36 | 46 |
| 2013 | 43 | 67 |
| 2014 | 51 | 67 |
| 2015 | 59 | 84 |
| 2016 | 54 | 76 |
| 2017 | 70 | 83 |
| 2018 | 65 | 108 |
| 2019 | 82 | 112 |
| 2020 | 109 | 99 |
| 2021 | 82 | 78 |
| 2022 | 72 | 82 |
| 2023 | 69 | 70 |
| 2024 | 77 | 80 |
| 2025 | 54 | 65 |
| 2026 | 23 | 39 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F16B 43/001Washers or equivalent devices: for sealing or insulation430
- F16B 43/02Washers or equivalent devices: with special provisions for engaging surfaces which are200
- F16B 43/009Washers or equivalent devices: with a wedging effect in order to adjust47
- F16B 43/005Engaging the bolt laterally to allow a quick mounting or dismounting of41
- F16B 43/004Washers or equivalent devices: with a radial cut in order to improve37
- F16B 2043/008Washers or equivalent devices: with a cavity for receiving the bolt headIndexing code32
- F16B 43/002Washers or equivalent devices: with special provisions for reducing friction31
- F16B 43/003Washers or equivalent devices: with a special hole shape in order to20
Recent patents
- Method and apparatus for securing a sawblade8 Sep 2026US 12,728,557 B2Woodpeckers, LLC
- Ring joint assembly for connecting objects on same or different planes and a system thereof18 Aug 2026US 12,710,066 B2
- Fastening system with sealing arrangement11 Aug 2026US 12,704,145 B2Acument Intellectual Properties, LLC
- Wall system fastener with seal member28 Jul 2026US 12,692,892 B1Altenloh, Brinck & Co. US, Inc.
- Multi-piece fastener including a shell14 Jul 2026US 12,680,570 B2AlphaUSA
- Washer, nut, and fastening structure8 Oct 2026US 2026/0309182 A1Nippon Plarad Co.
- T-Bolt Fastening System17 Sep 2026US 2026/0276029 A1Allfasteners USA, LLC
- Bolt-washer assembly for attaching truck body to frame, method and apparatus for assembling the bolt-washer assembly10 Sep 2026US 2026/0266324 A1A. Agrati S.P.A.
- Fastening system with sealing arrangement3 Sep 2026US 2026/0258829 A1Acument Intellectual Properties, LLC
- Fastener Assembly20 Aug 2026US 2026/0243285 A1Illinois Tool Works Inc.
Most cited
By later US patents
- Self-tapping screw with an improved thread design1,391US 6,065,919 A2000
- Washer for use with a bone screw158US 5,797,912 ATerray Corporation · 1998
- Rotatable cutting bit and bit washer therefor144US 6,113,195 ASandvik AB · 2000
- Shrinkage compensator for building tiedowns132US 6,390,747 B12002
- Roof mount sealing assembly129US 8,448,405 B2D Three Enterprises, LLC · 2013