B61K 7/04
With clamping action
Official title: with clamping action
B61K7/04 (With clamping action) appears on 50 US grants and 25 published applications in this corpus.
Search patents in B61K- Granted patents
- 50
- Published applications
- 25
- Assignees
- 31
- Inventors
- 75
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 2 |
| 2006 | 1 | 2 |
| 2007 | 2 | 1 |
| 2008 | 2 | 1 |
| 2009 | 1 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 3 | 1 |
| 2014 | 2 | 3 |
| 2015 | 1 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 1 |
| 2021 | 0 | 1 |
| 2022 | 1 | 1 |
| 2023 | 1 | 3 |
| 2024 | 1 | 1 |
| 2025 | 1 | 2 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems and methods for retarding the speed of a railcar16 Jun 2026US 12,654,751 B2Precision Rail and Mfg., Inc.
- Actuator apparatus with precision bearings and light sensor6 Jan 2026US 12,515,715 B2DTL Linear, LLC
- Systems and methods for monitoring brake systems on railway assets8 Apr 2025US 12,269,451 B2Amsted Rail Company, Inc.
- Foldable rail-mounted crane stop device8 Oct 2024US 12,110,216 B2Southeast University
- Systems and methods for monitoring brake systems on railway assets17 Oct 2023US 11,787,382 B2Amsted Rail Company, Inc.
- Electric railroad retarder22 May 2025US 2025/0162549 A1Advanced Rail Systems, LLC
- Retarder devices and methods for shimming retarder devices for slowing railcars2 Jan 2025US 2025/0002060 A1Precision Rail and Mfg., Inc.
- Systems and methods for monitoring brake systems on railway assets11 Jan 2024US 2024/0010181 A1Amsted Rail Company, Inc.
- Actuator apparatus with precision bearings and light sensor16 Nov 2023US 2023/0365169 A1DTL Linear, LLC
- Systems and methods for retarding the speed of a railcar19 Oct 2023US 2023/0331265 A1Precision Rail and Mfg., Inc.
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
- Wheeled locking carrier18US 4,576,096 A1986
- 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