F16K 31/566
Using a bistable spring device arranged symmetrically around the actuating stem
Official title: {using a bistable spring device arranged symmetrically around the actuating stem}
F16K31/566 (Using a bistable spring device arranged symmetrically around the actuating stem) appears on 38 US grants and 30 published applications in this corpus.
Search patents in F16K- Granted patents
- 38
- Published applications
- 30
- Assignees
- 42
- Inventors
- 95
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 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 | 0 |
| 2002 | 1 | 2 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 4 |
| 2016 | 2 | 0 |
| 2017 | 1 | 0 |
| 2018 | 1 | 3 |
| 2019 | 2 | 2 |
| 2020 | 2 | 7 |
| 2021 | 3 | 1 |
| 2022 | 3 | 1 |
| 2023 | 1 | 4 |
| 2024 | 2 | 0 |
| 2025 | 0 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Miniature latching valve65US 6,742,761 B2TiNi Alloy Company · 2004
- Liquid dispensing system and automatic selector therefor27US 4,493,435 AProduct Research and Development · 1985
- Safety valve system24US 6,170,509 B2Century Investments Limited · 2001
- Excess pressure shutoff valve16US 4,240,458 AHarper-Wyman Company · 1980
- Hand-controlled faucet14US 4,771,985 AGeneral Ideas & Products Ltd. · 1988