F01B 3/00
Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or
Official title: Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
F01B3/00 (Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or) appears on 773 US grants and 449 published applications in this corpus.
Search patents in F01B- Granted patents
- 773
- Published applications
- 449
- Assignees
- 255
- Inventors
- 1,079
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 22 | 0 |
| 1977 | 21 | 0 |
| 1978 | 20 | 0 |
| 1979 | 14 | 0 |
| 1980 | 13 | 0 |
| 1981 | 11 | 0 |
| 1982 | 5 | 0 |
| 1983 | 8 | 0 |
| 1984 | 19 | 0 |
| 1985 | 13 | 0 |
| 1986 | 15 | 0 |
| 1987 | 17 | 0 |
| 1988 | 13 | 0 |
| 1989 | 18 | 0 |
| 1990 | 17 | 0 |
| 1991 | 17 | 0 |
| 1992 | 16 | 0 |
| 1993 | 16 | 0 |
| 1994 | 10 | 0 |
| 1995 | 14 | 0 |
| 1996 | 14 | 0 |
| 1997 | 19 | 0 |
| 1998 | 22 | 0 |
| 1999 | 9 | 0 |
| 2000 | 14 | 0 |
| 2001 | 17 | 2 |
| 2002 | 20 | 12 |
| 2003 | 10 | 17 |
| 2004 | 16 | 25 |
| 2005 | 15 | 36 |
| 2006 | 23 | 13 |
| 2007 | 9 | 18 |
| 2008 | 16 | 15 |
| 2009 | 4 | 11 |
| 2010 | 11 | 19 |
| 2011 | 8 | 16 |
| 2012 | 10 | 17 |
| 2013 | 11 | 19 |
| 2014 | 10 | 21 |
| 2015 | 25 | 31 |
| 2016 | 17 | 27 |
| 2017 | 26 | 16 |
| 2018 | 28 | 20 |
| 2019 | 21 | 24 |
| 2020 | 20 | 18 |
| 2021 | 25 | 25 |
| 2022 | 14 | 11 |
| 2023 | 16 | 7 |
| 2024 | 10 | 13 |
| 2025 | 10 | 11 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F01B 3/0032Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or292
- F01B 3/0002Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or173
- F01B 3/04The piston motion being transmitted by curved surfaces167
- F01B 3/10Control of working-fluid admission or discharge peculiar thereto107
- F01B 3/0082Details106
- F01B 3/02Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or102
- F01B 3/0079Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or54
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.
- Mechanical device for connecting rods, levers and pistons20 Aug 2026US 2026/0243334 A1
- Axial Piston Machine with Fastening Flange with Off-Center Fastening Openings4 Jun 2026US 2026/0153030 A1Robert Bosch GmbH
- Multi-stage system16 Apr 2026US 2026/0103985 A1Kn Gg IP Holding and Licensing, LLC
- Axial Piston Machine in Slanted Axis Design with Pre-Compression Volume12 Feb 2026US 2026/0043393 A1Robert Bosch GmbH
Most cited
By later US patents
- External combustion slidable vane motor with air cushions149US 4,672,813 A1987
- Modular gland arrangements for a fluid end assembly61US 10,519,950 B2Kerr Machine Co. · 2019
- Wabbler plate engine mechanisms61US 4,433,596 A1984
- Apparatus and method for a balanced internal combustion engine coupled to a drive shaft59US 4,834,033 A1989
- Energy transfer device utilizing driveshaft having continuously variable inclined track49US 4,462,345 APulsar S.R.L. · 1984