F04B 53/14
Pistons, piston-rods or piston-rod connections
F04B53/14 (Pistons, piston-rods or piston-rod connections) appears on 1,526 US grants and 1,610 published applications in this corpus.
Search patents in F04B- Granted patents
- 1,526
- Published applications
- 1,610
- Assignees
- 851
- Inventors
- 3,088
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 21 | 0 |
| 1977 | 27 | 0 |
| 1978 | 13 | 0 |
| 1979 | 15 | 0 |
| 1980 | 11 | 0 |
| 1981 | 14 | 0 |
| 1982 | 9 | 0 |
| 1983 | 11 | 0 |
| 1984 | 16 | 0 |
| 1985 | 13 | 0 |
| 1986 | 12 | 0 |
| 1987 | 7 | 0 |
| 1988 | 16 | 0 |
| 1989 | 7 | 0 |
| 1990 | 6 | 0 |
| 1991 | 9 | 0 |
| 1992 | 12 | 0 |
| 1993 | 9 | 0 |
| 1994 | 10 | 0 |
| 1995 | 10 | 0 |
| 1996 | 9 | 0 |
| 1997 | 15 | 0 |
| 1998 | 13 | 0 |
| 1999 | 16 | 0 |
| 2000 | 21 | 0 |
| 2001 | 24 | 5 |
| 2002 | 11 | 16 |
| 2003 | 16 | 5 |
| 2004 | 4 | 13 |
| 2005 | 5 | 17 |
| 2006 | 5 | 12 |
| 2007 | 8 | 14 |
| 2008 | 11 | 25 |
| 2009 | 5 | 23 |
| 2010 | 13 | 47 |
| 2011 | 12 | 39 |
| 2012 | 22 | 38 |
| 2013 | 29 | 40 |
| 2014 | 30 | 60 |
| 2015 | 38 | 103 |
| 2016 | 57 | 191 |
| 2017 | 72 | 181 |
| 2018 | 134 | 121 |
| 2019 | 145 | 83 |
| 2020 | 93 | 88 |
| 2021 | 85 | 108 |
| 2022 | 73 | 89 |
| 2023 | 79 | 93 |
| 2024 | 91 | 81 |
| 2025 | 83 | 74 |
| 2026 | 59 | 44 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F04B 53/144Adaptation of piston-rods480
- F04B 53/143Sealing provided on the piston399
- F04B 53/148The piston being provided with channels which are coacting with the cylinder28
- F04B 53/141Intermediate liquid piston between the driving piston and the pumped liquid20
- F04B 53/142Intermediate liquid-piston between a driving piston and a driven piston16
Recent patents
- Rotating reciprocating piston pump with a barrel cam6 Oct 2026US 12,753,745 B2HTI Technology and Industries, Inc.
- Long stroke parallel pump6 Oct 2026US 12,753,746 B2National Oilwell Varco, L. P.
- Electric cylinder device6 Oct 2026US 12,753,747 B2Advics Co., Ltd.
- Liquid cooled plunger system6 Oct 2026US 12,753,754 B2Kerr Machine Co.
- Syringe pump6 Oct 2026US 12,753,756 B2Fluid Metering, Inc.
- Long stroke parallel pump1 Oct 2026US 2026/0298218 A1National Oilwell Varco, L. P.
- Unibody bypass plunger and valve cage24 Sep 2026US 2026/0286816 A1Flowco MasterCo LLC
- Piston of a membrane filtration system24 Sep 2026US 2026/0286954 A1Salinity Solutions Ltd
- Piston pump drive assembly for cleaning and care tools17 Sep 2026US 2026/0272629 A1Shanghai Shift Electrics Co., Ltd.
- Hydrogen store having a liquid piston10 Sep 2026US 2026/0266279 A1Maximator GmbH
Most cited
By later US patents
- Infusion pump system with disposable cartridge having pressure venting and pressure feedback253US 8,287,495 B2Tandem Diabetes Care, Inc. · 2012
- Over pressure relief system for fluid ends217US 10,082,137 B2Caterpillar Inc. · 2018
- Infusion pump system with disposable cartridge having pressure venting and pressure feedback204US 8,298,184 B2Tandem Diabetes Care, Inc. · 2012
- Fluid end with protected flow passages192US 9,739,130 B2Acme Industries, Inc. · 2017
- Reciprocating pump assembly188US 8,707,853 B1S,P.M. Flow Control, Inc. · 2014