F16D 33/06
Controlled by changing the amount of liquid in the working circuit
Official title: controlled by changing the amount of liquid in the working circuit
F16D33/06 (Controlled by changing the amount of liquid in the working circuit) appears on 99 US grants and 77 published applications in this corpus.
Search patents in F16D- Granted patents
- 99
- Published applications
- 77
- Assignees
- 45
- Inventors
- 164
- Latest grant
- 6 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 2 |
| 2002 | 7 | 1 |
| 2003 | 1 | 6 |
| 2004 | 4 | 8 |
| 2005 | 5 | 4 |
| 2006 | 5 | 5 |
| 2007 | 3 | 4 |
| 2008 | 3 | 11 |
| 2009 | 2 | 7 |
| 2010 | 9 | 2 |
| 2011 | 3 | 1 |
| 2012 | 2 | 4 |
| 2013 | 2 | 2 |
| 2014 | 1 | 1 |
| 2015 | 0 | 0 |
| 2016 | 3 | 1 |
| 2017 | 0 | 1 |
| 2018 | 2 | 0 |
| 2019 | 0 | 5 |
| 2020 | 2 | 5 |
| 2021 | 4 | 1 |
| 2022 | 1 | 2 |
| 2023 | 1 | 0 |
| 2024 | 1 | 3 |
| 2025 | 2 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Rotary union6 May 2025US 12,292,144 B2Murzanski Engineering
- Hybrid drive system for a motor vehicle18 Mar 2025US 12,252,016 B2Mercedes-Benz Group AG
- Drive unit8 Oct 2024US 12,109,876 B2Exedy Corporation
- Lock-up device for torque converter10 Jan 2023US 11,549,567 B2Valeo Kapec Co., Ltd.
- Fluid distribution apparatus and the axle assembly made therewith8 Feb 2022US 11,242,899 B2Dana Automotive Systems Group, LLC
- Hydrodynamic automatic continuously variable transmission4 Sep 2025US 2025/0277521 A1
- Rotary Union17 Oct 2024US 2024/0344643 A1Murzanski Engineering
- Rotary Union17 Oct 2024US 2024/0344644 A1Murzanski Engineering
- Hybrid Drive System for a Motor Vehicle10 Oct 2024US 2024/0336126 A1Mercedes-Benz Group AG
- Drive unit6 Oct 2022US 2022/0314768 A1Exedy Corporation
Most cited
By later US patents
- Hydrodynamic coupling83US 6,698,195 B1Voith Turbo GmbH & Co. KG · 2004
- Torque converter clutch with a temperature regulator valve47US 4,423,803 AGeneral Motors Corporation · 1984
- Multiple-clutch device37US 6,464,059 B1Mannesmann Sachs AG · 2002
- Hydrodynamic working circuit with device for reducing air circulation losses26US 4,773,513 AJ. M. Voith GmbH · 1988
- Hydrodynamic coupling20US 4,073,139 AVoith Getriebe KG · 1978