B61D 5/08
Covers or access openings
Official title: {Covers or access openings; Arrangements thereof}
B61D5/08 (Covers or access openings) appears on 68 US grants and 63 published applications in this corpus.
Search patents in B61D- Granted patents
- 68
- Published applications
- 63
- Assignees
- 38
- Inventors
- 135
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 2 | 1 |
| 2011 | 1 | 1 |
| 2012 | 2 | 2 |
| 2013 | 2 | 3 |
| 2014 | 2 | 1 |
| 2015 | 1 | 8 |
| 2016 | 8 | 7 |
| 2017 | 7 | 5 |
| 2018 | 4 | 4 |
| 2019 | 1 | 3 |
| 2020 | 4 | 2 |
| 2021 | 1 | 6 |
| 2022 | 0 | 1 |
| 2023 | 3 | 4 |
| 2024 | 6 | 2 |
| 2025 | 4 | 6 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Tank car bottom outlet valve operating assembly26 May 2026US 12,638,100 B2Trinity Rail Group, LLC
- Socket systems and methods31 Mar 2026US 12,589,470 B2IMPERIAL-Newton Corp
- Vacuum relief valve for railroad tank car16 Dec 2025US 12,498,056 B2Valve & Machining LLC
- Railroad tank car manway nozzle assembly gasket11 Nov 2025US 12,466,448 B1MPRC Products LLC
- Hopper railroad car having top hatch cover assembly29 Apr 2025US 12,286,141 B2Gunderson LLC
- Protective Housing Attachment for Railcar2 Jul 2026US 2026/0184353 A1Trinity Tank Car, Inc.
- Thermal Protection for Tank Car2 Jul 2026US 2026/0184354 A1Trinity Tank Car, Inc.
- Vacuum Relief Valve for Railroad Tank Car25 Jun 2026US 2026/0177165 A1McKenzie Valve & Machining LLC
- Railway tank car having a discharge valve assembly and a dis-engageable valve handle assembly coupled to the discharge valve assembly16 Apr 2026US 2026/0104101 A1Gunderson LLC
- Socket systems and methods30 Oct 2025US 2025/0332694 A1IMPERIAL-Newton Corp
Most cited
By later US patents
- Vented hatch cover111US 4,819,830 ASalco Products, Inc. · 1989
- Tank safety ladder21US 4,848,517 A1989
- Fuel tank venting separator21US 4,963,169 ARacor Division of Parker Hannifin Corp. · 1990
- System for monitoring railroad cars21US 8,060,264 B2Salco Products, Inc. · 2011
- Cover and latching mechanism for rail car loading hatch20US 4,889,056 ATrinity Industries, Inc. · 1989