F16F 1/047
Characterised by varying pitch
Official title: {characterised by varying pitch}
F16F1/047 (Characterised by varying pitch) appears on 59 US grants and 71 published applications in this corpus.
Search patents in F16F- Granted patents
- 59
- Published applications
- 71
- Assignees
- 51
- Inventors
- 169
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 4 | 4 |
| 2002 | 6 | 2 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 2 |
| 2013 | 1 | 3 |
| 2014 | 1 | 4 |
| 2015 | 4 | 6 |
| 2016 | 3 | 6 |
| 2017 | 3 | 12 |
| 2018 | 9 | 3 |
| 2019 | 3 | 7 |
| 2020 | 6 | 5 |
| 2021 | 6 | 4 |
| 2022 | 2 | 1 |
| 2023 | 2 | 2 |
| 2024 | 2 | 2 |
| 2025 | 1 | 2 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Coil springs, pocketed coil springs assemblies, and mattresses including the same14 Jul 2026US 12,680,588 B2Sealy Technology, LLC
- Gun magazine spring state indication system and method12 May 2026US 12,624,913 B1Check-Mate Industries, Inc.
- Twisted valve spring2 Sep 2025US 12,404,786 B2Honda Motor Co., Ltd.
- Method for determining propelling condition for shot medium, and method for manufacturing coil spring24 Sep 2024US 12,097,591 B2Hitachi Astemo, Ltd.
- Coil spring for vehicle suspension system5 Mar 2024US 11,919,347 B2APM Engineering and Research Sdn. Bhd.
- Spring connector25 Jun 2026US 2026/0180221 A1Yokowo Co., Ltd.
- Coil springs, pocketed coil springs assemblies, and mattresses including the same5 Feb 2026US 2026/0036181 A1Sealy Technology, LLC
- Handgun magazine spring31 Jul 2025US 2025/0243919 A1HS Produkt D.O.O.
- Coil springs, pocketed coil springs assemblies, and mattresses including the same29 May 2025US 2025/0172183 A1Sealy Technology, LLC
- Twisted valve spring13 Jun 2024US 2024/0191641 A1Honda Motor Co., Ltd.
Most cited
By later US patents
- Multiple rate coil spring assembly82US 5,868,383 AL&P Property Management Company · 1999
- Non-linear non-circular coiled spring79US 6,193,225 B1Tama Spring Co., Ltd. · 2001
- Linear compressor including reciprocating piston and machined double-helix piston spring57US 5,944,302 ARaytheon Company · 1999
- Differential pressure valve with parallel biasing springs and method for reducing spring surge27US 9,297,373 B2Nuovo Pignone S.p.A. · 2016
- Ammunition magazine and resilient member26US 9,255,749 B22016