B61K 7/08
Operated pneumatically or hydraulically
Official title: operated pneumatically or hydraulically
B61K7/08 (Operated pneumatically or hydraulically) appears on 32 US grants and 16 published applications in this corpus.
Search patents in B61K- Granted patents
- 32
- Published applications
- 16
- Assignees
- 19
- Inventors
- 49
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 2 |
| 2006 | 1 | 1 |
| 2007 | 1 | 1 |
| 2008 | 2 | 1 |
| 2009 | 1 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 3 | 1 |
| 2014 | 2 | 2 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 2 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for retarding the speed of a railcar16 Jun 2026US 12,654,751 B2Precision Rail and Mfg., Inc.
- Universal retarder system for railway cars7 Jun 2022US 11,352,032 B2Precision Rail and Mfg., Inc.
- Track brake with at least one vertically-movable braking element and method for determining the respective position thereof31 Mar 2015US 8,996,243 B2Siemens Aktiengesellschaft
- Systems for retarding the speed of a railcar2 Dec 2014US 8,899,385 B2Precision Rail and Mfg., Inc.
- Vertical retractable rail clamp11 Feb 2014US 8,646,582 B2Hillmar Industries Ltd.
- Retarder devices and methods for shimming retarder devices for slowing railcars2 Jan 2025US 2025/0002060 A1Precision Rail and Mfg., Inc.
- Systems and methods for retarding the speed of a railcar19 Oct 2023US 2023/0331265 A1Precision Rail and Mfg., Inc.
- Systems and methods for retarding the speed of a railcar28 Sep 2023US 2023/0303136 A1Precision Rail and Mfg., Inc.
- Universal retarder system for railway cars19 Dec 2019US 2019/0382038 A1Precision Rail and Mfg., Inc.
- Vertical retractable rail clamp12 Jun 2014US 2014/0158475 A1Hillmar Industries Ltd.
Most cited
By later US patents
- Vat wheel lock24US 4,739,863 A1988
- Lubricating apparatus for reducing squeal noise of a railroad car wheel when passing through a car retarder21US 4,088,078 AWestinghouse Air Brake Company · 1978
- Railcar retarder assembly18US 6,152,042 AABC Rail Products Corporation · 2000
- Linear motor driven conveying installation and braking device therefor15US 4,819,564 AMaschinenfabrik Scharf GmbH · 1989
- Low-profile railway car retarder15US 4,867,279 AAmerican Standard Inc. · 1989