B60T 1/087
In hydrodynamic, i.e. non-positive displacement, retarders
Official title: in hydrodynamic, i.e. non-positive displacement, retarders
B60T1/087 (In hydrodynamic, i.e. non-positive displacement, retarders) appears on 119 US grants and 77 published applications in this corpus.
Search patents in B60T- Granted patents
- 119
- Published applications
- 77
- Assignees
- 58
- Inventors
- 243
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 5 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 8 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 1 |
| 2002 | 1 | 3 |
| 2003 | 4 | 3 |
| 2004 | 1 | 4 |
| 2005 | 2 | 1 |
| 2006 | 2 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 3 |
| 2015 | 0 | 4 |
| 2016 | 3 | 7 |
| 2017 | 4 | 2 |
| 2018 | 3 | 1 |
| 2019 | 0 | 4 |
| 2020 | 3 | 7 |
| 2021 | 2 | 9 |
| 2022 | 6 | 6 |
| 2023 | 6 | 3 |
| 2024 | 6 | 8 |
| 2025 | 5 | 6 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Pneumatic controller for a hydrodynamic brake8 Sep 2026US 12,728,829 B2ETO Magnetic GmbH
- Technologies for variable retarder control11 Aug 2026US 12,704,136 B2Allison Transmission, Inc.
- Sealing system11 Aug 2026US 12,704,181 B2Driventic GmbH
- Control device and method for controlling traveling speed of a vehicle17 Mar 2026US 12,576,821 B2Scania CV AB
- Device and method for energy recovery for an electrically driven motor vehicle11 Nov 2025US 12,466,364 B2Man Truck & Bus AG
- Braking system for a vehicle and a wheel brake device16 Jul 2026US 2026/0200444 A1Mercedes-Benz Group AG
- Hydrodynamic retarder including a working medium tank8 Jan 2026US 2026/0009410 A1Voith Patent GmbH
- Hydrodynamic retarder including a filling tube8 Jan 2026US 2026/0009433 A1Voith Patent GmbH
- Hydrodynamic retarder8 Jan 2026US 2026/0009434 A1Voith Patent GmbH
- Technologies for variable retarder control27 Nov 2025US 2025/0361886 A1Allison Transmission, Inc.
Most cited
By later US patents
- Controller for retarder27US 5,333,707 AAkebono Brake Industry Co., Ltd. · 1994
- Disc brake with fluid cooled actuator26US 4,014,410 A1977
- Transmission with hydrodynamic torque converter and retarder26US 4,191,072 AZahnradfabrik Friedrichshafen AG · 1980
- Hydrodynamic working circuit with device for reducing air circulation losses26US 4,773,513 AJ. M. Voith GmbH · 1988
- Engine overspeed control of retarder23US 3,931,870 AGeneral Motors Corporation · 1976