F16K 41/04
With at least one ring of rubber or like material between spindle
Official title: with at least one ring of rubber or like material between spindle and housing
F16K41/04 (With at least one ring of rubber or like material between spindle) appears on 249 US grants and 209 published applications in this corpus.
Search patents in F16K- Granted patents
- 249
- Published applications
- 209
- Assignees
- 184
- Inventors
- 543
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 11 | 0 |
| 1986 | 5 | 0 |
| 1987 | 5 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 6 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 4 | 1 |
| 2003 | 3 | 3 |
| 2004 | 0 | 6 |
| 2005 | 5 | 5 |
| 2006 | 5 | 5 |
| 2007 | 3 | 2 |
| 2008 | 1 | 4 |
| 2009 | 0 | 2 |
| 2010 | 3 | 3 |
| 2011 | 3 | 9 |
| 2012 | 4 | 6 |
| 2013 | 7 | 9 |
| 2014 | 9 | 4 |
| 2015 | 5 | 9 |
| 2016 | 11 | 7 |
| 2017 | 5 | 7 |
| 2018 | 7 | 13 |
| 2019 | 9 | 15 |
| 2020 | 11 | 11 |
| 2021 | 11 | 11 |
| 2022 | 12 | 10 |
| 2023 | 12 | 16 |
| 2024 | 13 | 23 |
| 2025 | 18 | 16 |
| 2026 | 8 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Connector structure of stepless capacity control actuator of reciprocating compressor22 Sep 2026US 12,742,451 B2Beijing University of Chemical Technology
- Packing system of a valve assembly25 Aug 2026US 12,716,521 B2Fisher Controls International LLC
- Vibration reducing device25 Aug 2026US 12,716,522 B2FMC Technologies, Inc.
- Three-way valve23 Jun 2026US 12,663,093 B2Rinnai Corporation
- Control valves with adjustable valve packing14 Apr 2026US 12,601,423 B2Fisher Controls International LLC
- Improvements in, or relating to valves and methods therefor24 Sep 2026US 2026/0287081 A1
- Compact valve for cryogen media with conditioning system30 Jul 2026US 2026/0218798 A1Linde Aktiengesellschaft
- Three-way valve for flow rate control, and temperature control device2 Jul 2026US 2026/0185619 A1Shinwa Controls Co., Ltd
- Packing material cartridge28 May 2026US 2026/0146681 A1A. W. Chesterton Company
- Vibration reducing device21 May 2026US 2026/0139763 A1FMC Technologies, Inc.
Most cited
By later US patents
- Cooling control system and expansion valve therefor118US 4,506,518 APacific Industrial Co., Ltd. · 1985
- Valve stem packing system85US 5,263,682 AWhitey Co. · 1993
- High pressure gate valve with preloaded, stacked, solid lubricated stem seals80US 4,340,204 ASmith International, Inc. · 1982
- Valve stem packing structure79US 5,056,758 A1991
- Flexible non-planar graphite sealing ring65US 5,201,532 AMark Controls Corporation · 1993