B60T 11/224
With pressure-varying means
Official title: with pressure-varying means, e.g. with two stage operation provided by use of different piston diameters including continuous variation from one diameter to another
B60T11/224 (With pressure-varying means) appears on 152 US grants and 86 published applications in this corpus.
Search patents in B60T- Granted patents
- 152
- Published applications
- 86
- Assignees
- 65
- Inventors
- 220
- Latest grant
- 8 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 4 | 0 |
| 1983 | 6 | 0 |
| 1984 | 10 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 6 | 0 |
| 1988 | 5 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 3 | 7 |
| 2003 | 5 | 2 |
| 2004 | 2 | 4 |
| 2005 | 4 | 5 |
| 2006 | 2 | 2 |
| 2007 | 3 | 2 |
| 2008 | 2 | 3 |
| 2009 | 1 | 1 |
| 2010 | 1 | 2 |
| 2011 | 2 | 1 |
| 2012 | 1 | 5 |
| 2013 | 2 | 8 |
| 2014 | 4 | 5 |
| 2015 | 3 | 16 |
| 2016 | 11 | 8 |
| 2017 | 7 | 2 |
| 2018 | 11 | 0 |
| 2019 | 3 | 2 |
| 2020 | 1 | 0 |
| 2021 | 2 | 2 |
| 2022 | 0 | 3 |
| 2023 | 0 | 3 |
| 2024 | 2 | 1 |
| 2025 | 4 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Electronic brake system and operating method thereof8 Jul 2025US 12,351,146 B2Hl Mando Corporation
- Piston actuation device3 Jun 2025US 12,319,248 B2Robert Bosch GmbH
- Vehicle braking system14 Jan 2025US 12,194,972 B2Robert Bosch GmbH
- Braking control device14 Jan 2025US 12,194,977 B2Advics Co., Ltd.
- Bicycle hydraulic assembly and bicycle brake device4 Jun 2024US 11,999,437 B2Tektro Technology Corporation
- Nested brake upper pump with a dynamic and static dual-core structure2 Oct 2025US 2025/0304209 A1Ningbo Lewis Sports Goods Co., Ltd.
- Electronic brake system and operating method thereof22 Feb 2024US 2024/0059267 A1Hl Mando Corporation
- Vehicle braking system5 Oct 2023US 2023/0311837 A1Robert Bosch GmbH
- Brake device20 Jul 2023US 2023/0227014 A1Subaru Corporatioln
- Hydraulic adjustment unit of brake system in vehicle, brake system, and control method2 Feb 2023US 2023/0033528 A1
Most cited
By later US patents
- Quick take-up master cylinder21US 4,208,881 AGeneral Motors Corporation · 1980
- Quick take-up master cylinder19US 4,133,178 AGeneral Motors Corporation · 1979
- Tandem master cylinder19US 4,621,498 AITT Industries, Inc. · 1986
- Dual circuit quick take-up master cylinder18US 4,086,770 AGeneral Motors Corporation · 1978
- Control for a two stage master cylinder18US 4,170,386 AThe Bendix Corporation · 1979