F01B 3/0032
Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or
Official title: {having rotary cylinder block}
F01B3/0032 (Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or) appears on 292 US grants and 189 published applications in this corpus.
Search patents in F01B- Granted patents
- 292
- Published applications
- 189
- Assignees
- 118
- Inventors
- 469
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 14 | 0 |
| 1978 | 6 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 8 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 6 | 0 |
| 1989 | 5 | 0 |
| 1990 | 5 | 0 |
| 1991 | 7 | 0 |
| 1992 | 8 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 6 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 0 |
| 2002 | 6 | 2 |
| 2003 | 3 | 7 |
| 2004 | 7 | 9 |
| 2005 | 3 | 14 |
| 2006 | 5 | 4 |
| 2007 | 5 | 8 |
| 2008 | 8 | 4 |
| 2009 | 1 | 0 |
| 2010 | 6 | 6 |
| 2011 | 2 | 4 |
| 2012 | 4 | 3 |
| 2013 | 4 | 9 |
| 2014 | 3 | 8 |
| 2015 | 8 | 20 |
| 2016 | 5 | 10 |
| 2017 | 13 | 8 |
| 2018 | 16 | 7 |
| 2019 | 13 | 8 |
| 2020 | 8 | 9 |
| 2021 | 15 | 18 |
| 2022 | 10 | 8 |
| 2023 | 12 | 4 |
| 2024 | 5 | 9 |
| 2025 | 8 | 8 |
| 2026 | 4 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hydraulic axial piston machine25 Aug 2026US 12,716,356 B2Danfoss A/S
- Hydraulic piston pump/motor with non-cantilevered pistons17 Feb 2026US 12,553,344 B2Goodrich Corporation
- Hydraulic device17 Feb 2026US 12,553,410 B2Bucher Hydraulics AG
- Actuation system for a motor6 Jan 2026US 12,516,662 B2Dana Motion Systems Italia S.R.L.
- Hydrostatic shoe with face seal9 Dec 2025US 12,492,637 B2Goodrich Corporation
- Hydraulic Transformer10 Sep 2026US 2026/0266181 A1Innas B.V.
- Axial Piston Machine in Slanted Axis Design with Pre-Compression Volume12 Feb 2026US 2026/0043393 A1Robert Bosch GmbH
- A hydraulic device27 Nov 2025US 2025/0361849 A1Innas B.V.
- Piston assembly for hydraulic pump13 Nov 2025US 2025/0347276 A1Goodrich Actuation Systems Limited
- Hydraulic piston pump/motor with non-cantilevered pistons18 Sep 2025US 2025/0290418 A1Goodrich Corporation
Most cited
By later US patents
- Two plus two stroke opposed piston heat engine46US 4,996,953 A1991
- Axial-piston combustion engine37US 3,939,809 A1976
- Swashplate control system for an axial piston pump33US 5,794,515 A1998
- Rotary power device32US 5,209,190 A1993
- Linear movement motor and a swash plate for a motor of this type30US 4,489,682 AS.E.C.A. Societe Anonyme Societe d'Entreprises Commerciales et Aeronautiques · 1984