F16F 15/22
Compensation of inertia forces
Official title: Compensation of inertia forces {(suppression of vibrations of rotating systems by favourable grouping or relative arrangements of the moving members of the system or systems F16F15/20, counterweights F16F15/28; correcting-weights for balancing rotating bodies F16F15/32)}
F16F15/22 (Compensation of inertia forces) appears on 637 US grants and 476 published applications in this corpus.
Search patents in F16F- Granted patents
- 637
- Published applications
- 476
- Assignees
- 269
- Inventors
- 1,161
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 6 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 6 | 0 |
| 1982 | 5 | 0 |
| 1983 | 6 | 0 |
| 1984 | 7 | 0 |
| 1985 | 11 | 0 |
| 1986 | 12 | 0 |
| 1987 | 14 | 0 |
| 1988 | 6 | 0 |
| 1989 | 11 | 0 |
| 1990 | 8 | 0 |
| 1991 | 8 | 0 |
| 1992 | 12 | 0 |
| 1993 | 12 | 0 |
| 1994 | 7 | 0 |
| 1995 | 4 | 0 |
| 1996 | 6 | 0 |
| 1997 | 7 | 0 |
| 1998 | 12 | 0 |
| 1999 | 12 | 0 |
| 2000 | 8 | 0 |
| 2001 | 22 | 4 |
| 2002 | 17 | 6 |
| 2003 | 10 | 15 |
| 2004 | 13 | 23 |
| 2005 | 20 | 12 |
| 2006 | 16 | 21 |
| 2007 | 13 | 18 |
| 2008 | 15 | 18 |
| 2009 | 15 | 30 |
| 2010 | 10 | 22 |
| 2011 | 14 | 23 |
| 2012 | 24 | 24 |
| 2013 | 27 | 30 |
| 2014 | 33 | 22 |
| 2015 | 16 | 19 |
| 2016 | 15 | 22 |
| 2017 | 14 | 30 |
| 2018 | 25 | 28 |
| 2019 | 26 | 36 |
| 2020 | 28 | 28 |
| 2021 | 27 | 19 |
| 2022 | 17 | 9 |
| 2023 | 12 | 6 |
| 2024 | 9 | 4 |
| 2025 | 4 | 5 |
| 2026 | 5 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F16F 15/26Of crankshaft systems using solid masses, other than the ordinary pistons, moving481
- F16F 15/24Of crankshaft systems by particular disposition of cranks, pistons, or the like39
- F16F 15/223Use of systems involving rotary unbalanced masses where the phase-angle of masses27
- F16F 15/226In star engine arrangements0
Recent patents
- Counterbalancer assemblies for engines15 Sep 2026US 12,736,106 B1Brunswick Corporation
- Balancer device for internal combustion engine25 Aug 2026US 12,716,467 B2Hitachi Astemo, Ltd.
- Multi-chamber internally damped tuned vibration absorber18 Aug 2026US 12,710,090 B2Textron Innovations Inc.
- Reconditioned harmonic balancer5 May 2026US 12,618,358 B2
- Oil pan for internal combustion engine3 Mar 2026US 12,565,852 B2Arctic Cat Inc.
- Oil pan for internal combustion engine9 Jul 2026US 2026/0194004 A1Arctic Cat Inc.
- Tunable mass damper23 Apr 2026US 2026/0109189 A1
- Gravity compensation device4 Dec 2025US 2025/0369499 A1Precitrame Machines SA
- Balancer device for internal combustion engine4 Dec 2025US 2025/0369500 A1Hitachi Astemo, Ltd.
- Reconditioned harmonic balancer21 Aug 2025US 2025/0264053 A1
Most cited
By later US patents
- Vibration damping control apparatus for vehicle199US 5,537,967 ANippondenso Co., Ltd. · 1996
- Inertia force generating device52US 5,005,439 ABarry Wright Corporation · 1991
- Pivoting balancer system45US 4,819,593 ABriggs & Stratton Corporation · 1989
- Anti-rattle engine balancer which drives associated oil pump43US 5,535,643 AGeneral Motors Corporation · 1996
- Automatic shaft balancer39US 4,075,909 A1978