F04B 9/04
The means being cams, eccentrics or pin-and-slot mechanisms
Official title: the means being cams, eccentrics or pin-and-slot mechanisms
F04B9/04 (The means being cams, eccentrics or pin-and-slot mechanisms) appears on 805 US grants and 829 published applications in this corpus.
Search patents in F04B- Granted patents
- 805
- Published applications
- 829
- Assignees
- 472
- Inventors
- 1,627
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 10 | 0 |
| 1978 | 6 | 0 |
| 1979 | 6 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 4 | 0 |
| 1983 | 6 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 5 | 0 |
| 1992 | 13 | 0 |
| 1993 | 12 | 0 |
| 1994 | 11 | 0 |
| 1995 | 3 | 0 |
| 1996 | 11 | 0 |
| 1997 | 21 | 0 |
| 1998 | 16 | 0 |
| 1999 | 21 | 0 |
| 2000 | 16 | 0 |
| 2001 | 16 | 4 |
| 2002 | 7 | 12 |
| 2003 | 9 | 1 |
| 2004 | 8 | 10 |
| 2005 | 3 | 6 |
| 2006 | 7 | 8 |
| 2007 | 4 | 11 |
| 2008 | 3 | 10 |
| 2009 | 2 | 16 |
| 2010 | 5 | 24 |
| 2011 | 13 | 15 |
| 2012 | 15 | 26 |
| 2013 | 14 | 30 |
| 2014 | 13 | 34 |
| 2015 | 29 | 42 |
| 2016 | 24 | 56 |
| 2017 | 32 | 60 |
| 2018 | 47 | 68 |
| 2019 | 72 | 67 |
| 2020 | 45 | 54 |
| 2021 | 49 | 64 |
| 2022 | 44 | 49 |
| 2023 | 35 | 54 |
| 2024 | 35 | 45 |
| 2025 | 44 | 35 |
| 2026 | 39 | 28 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Rotating reciprocating piston pump with a barrel cam6 Oct 2026US 12,753,745 B2HTI Technology and Industries, Inc.
- Pumping assembly29 Sep 2026US 12,746,560 B2Graco Minnesota Inc.
- Radial piston pump, method for operating a radial piston pump, and steering system15 Sep 2026US 12,736,036 B2Pump Technology Solutions PS GmbH
- Transmission structure with limiting rail and air compressor15 Sep 2026US 12,736,040 B2Zhejiang Qianji Intelligent Technology Co., Ltd.
- Fuel pump4 Aug 2026US 12,698,751 B1
- Long stroke parallel pump1 Oct 2026US 2026/0298218 A1National Oilwell Varco, L. P.
- Reusable fluid pumping device1 Oct 2026US 2026/0298219 A1CareFusion 303, Inc.
- Piston-cylinder assembly for a radial piston compressor, and radial piston compressor24 Sep 2026US 2026/0286945 A1thyssenkrupp AG
- Drive mechanism for positive displacement pumps17 Sep 2026US 2026/0273173 A1Insulet Corporation
- Pump drive system17 Sep 2026US 2026/0275973 A1Graco Minnesota Inc.
Most cited
By later US patents
- Nonpulsating IV pump and disposable pump chamber393US 4,236,880 AArchibald Development Labs, Inc. · 1980
- IV Pump with empty supply reservoir and occlusion detector290US 4,277,226 AAVI, Inc. · 1981
- Disposable ambulatory microprocessor controlled volumetric pump249US 5,807,075 ASarcos Corp. · 1998
- Intravenous liquid pumping system and method191US 4,468,222 AValleylab, Inc. · 1984
- Reciprocating machine178US 5,762,480 A1998