F16J 15/3452
The pressing force resulting from the action of a spring
Official title: {the pressing force resulting from the action of a spring}
F16J15/3452 (The pressing force resulting from the action of a spring) appears on 200 US grants and 212 published applications in this corpus.
Search patents in F16J- Granted patents
- 200
- Published applications
- 212
- Assignees
- 132
- Inventors
- 423
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 0 |
| 2002 | 4 | 3 |
| 2003 | 2 | 6 |
| 2004 | 4 | 5 |
| 2005 | 4 | 3 |
| 2006 | 2 | 1 |
| 2007 | 2 | 2 |
| 2008 | 1 | 1 |
| 2009 | 0 | 3 |
| 2010 | 2 | 4 |
| 2011 | 2 | 5 |
| 2012 | 3 | 7 |
| 2013 | 3 | 2 |
| 2014 | 5 | 14 |
| 2015 | 4 | 15 |
| 2016 | 9 | 24 |
| 2017 | 11 | 10 |
| 2018 | 10 | 12 |
| 2019 | 15 | 19 |
| 2020 | 20 | 18 |
| 2021 | 9 | 16 |
| 2022 | 20 | 13 |
| 2023 | 17 | 10 |
| 2024 | 14 | 7 |
| 2025 | 9 | 6 |
| 2026 | 3 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Tiltable floating lip seal6 Oct 2026US 12,753,838 B2Flowserve Pte. Ltd.
- Mechanical seal arrangement6 Oct 2026US 12,753,839 B2Eagleburgmann Germany GmbH & Co.KG
- Seal assembly for gas turbine engines26 May 2026US 12,637,954 B2Rtx Corporation
- Seal assembly for gas turbine engines25 Nov 2025US 12,480,418 B1Rtx Corporation
- Mechanical seal arrangement18 Nov 2025US 12,473,979 B2Eagleburgmann Germany GmbH & Co.KG
- Seal assembly for build tanks20 Aug 2026US 2026/0243350 A1General Electric Company
- Double-section spring element6 Aug 2026US 2026/0226986 A1Rolls-Royce Deutschland Ltd & Co KG
- Mechanical seal arrangement30 Jul 2026US 2026/0218793 A1Eagleburgmann Germany GmbH & Co.KG
- Mechanical seal arrangement2 Jul 2026US 2026/0185611 A1Eagleburgmann Germany GmbH & Co.KG
- Seal and system with a seal12 Mar 2026US 2026/0071680 A1Stasskol GmbH
Most cited
By later US patents
- Mechanical seal with flexible metal diaphragm64US 5,947,479 AJohn Crane Inc. · 1999
- Cartridge-type mechanical seal39US 6,357,753 B1Nippon Pillar Packing Co., Ltd. · 2002
- Aspirating face seal with axially biasing one piece annular spring38US 6,758,477 B2General Electric Company · 2004
- Fluid seal36US 7,163,206 B2Cross Manufacturing Company (1938) Limited · 2007
- Non-contact seal with resilient biasing element(s)27US 10,184,347 B1United Technologies Corporation · 2019