B61D 7/26
Mechanical
Official title: mechanical
B61D7/26 (Mechanical) appears on 83 US grants and 49 published applications in this corpus.
Search patents in B61D- Granted patents
- 83
- Published applications
- 49
- Assignees
- 38
- Inventors
- 120
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 2 |
| 2002 | 2 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 1 | 2 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 3 |
| 2011 | 0 | 0 |
| 2012 | 1 | 2 |
| 2013 | 4 | 3 |
| 2014 | 4 | 3 |
| 2015 | 1 | 6 |
| 2016 | 3 | 4 |
| 2017 | 3 | 2 |
| 2018 | 3 | 6 |
| 2019 | 4 | 5 |
| 2020 | 6 | 1 |
| 2021 | 3 | 1 |
| 2022 | 0 | 3 |
| 2023 | 1 | 2 |
| 2024 | 2 | 0 |
| 2025 | 2 | 0 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Opening stop device for railway freight car door outlet gates24 Mar 2026US 12,583,488 B2A. Stucki Company
- System and apparatus for providing supplemental securement of doors of bottom dump material transport containers3 Feb 2026US 12,539,891 B1
- Hopper car outlet gate mechanical flap to prevent pellet loss4 Nov 2025US 12,459,547 B2Chevron Phillips Chemical Company LP
- Discharge gate sensing method, system and assembly8 Jul 2025US 12,351,218 B2Amsted Rail Company, Inc.
- Longitudinal door operating mechanism1 Oct 2024US 12,103,571 B2Railcar Innovations, LLC
- Devices and systems for articulating an outlet gate door24 Sep 2026US 2026/0285377 A1Transportation IP Holdings, LLC
- Hopper car outlet gate mechanical flap to prevent pellet loss15 Jan 2026US 2026/0015017 A1Chevron Phillips Chemical Company LP
- Discharge gate arrangements for railroad hopper cars5 Oct 2023US 2023/0311955 A1Gunderson LLC
- Opening stop device for railway freight car door outlet gates19 Jan 2023US 2023/0019629 A1A. Stucki Company
- Longitudinal door operating mechanism17 Nov 2022US 2022/0363294 A1Railcar Innovations, LLC
Most cited
By later US patents
- Railway hopper car gate valve and operating assembly97US 5,613,446 ATrinity Industries, Inc. · 1997
- Manual railroad hopper car door actuating mechanism97US 6,955,127 B22005
- Gate assembly for a railroad hopper car82US 6,263,803 B1Miner Enterprises, Inc. · 2001
- Gate assembly for a railroad hopper car81US 6,412,422 B2Miner Enterprises, Inc. · 2002
- Operating system for railroad hopper car gate assembly doors52US 4,601,244 AMiner Enterprises, Inc. · 1986