B61D 17/20
Communication passages between coaches
Official title: Communication passages between coaches; Adaptation of coach ends therefor
B61D17/20 (Communication passages between coaches) appears on 164 US grants and 102 published applications in this corpus.
Search patents in B61D- Granted patents
- 164
- Published applications
- 102
- Assignees
- 93
- Inventors
- 245
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 5 | 0 |
| 1987 | 5 | 0 |
| 1988 | 5 | 0 |
| 1989 | 6 | 0 |
| 1990 | 4 | 0 |
| 1991 | 7 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 7 | 0 |
| 1996 | 7 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 0 |
| 2002 | 4 | 2 |
| 2003 | 0 | 2 |
| 2004 | 2 | 3 |
| 2005 | 3 | 4 |
| 2006 | 1 | 2 |
| 2007 | 0 | 5 |
| 2008 | 3 | 1 |
| 2009 | 4 | 3 |
| 2010 | 4 | 9 |
| 2011 | 2 | 4 |
| 2012 | 4 | 4 |
| 2013 | 6 | 1 |
| 2014 | 6 | 1 |
| 2015 | 0 | 5 |
| 2016 | 2 | 5 |
| 2017 | 2 | 4 |
| 2018 | 3 | 3 |
| 2019 | 8 | 9 |
| 2020 | 1 | 6 |
| 2021 | 5 | 5 |
| 2022 | 7 | 6 |
| 2023 | 4 | 12 |
| 2024 | 3 | 2 |
| 2025 | 6 | 2 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Convolute for a bellows for a gangway, bellows for a gangway and multi-car vehicle8 Sep 2026US 12,728,681 B2Dellner Couplers AB
- Convolute for a gangway, bellows, and gangway12 May 2026US 12,623,696 B2Dellner Couplers AB
- Sidewall suitable for a gangway and gangway24 Mar 2026US 12,583,489 B2Dellner Couplers AB
- Treadplate for a floor of a gangway and gangway2 Dec 2025US 12,485,935 B2Dellner Couplers AB
- Cornerpiece of a convolute of a bellows of a gangway and method for producing such a cornerpiece21 Oct 2025US 12,448,012 B2Dellner Couplers AB
- Gangway for providing a transition between a first vehicle part and a second vehicle part of a vehicle, and vehicle with such a gangway25 Jun 2026US 2026/0175880 A1HÜBNER GmbH & Co.KG
- Vehicle having a cross-sectionally reduced portion12 Feb 2026US 2026/0042472 A1Siemens Mobility GmbH
- Vulcanization bonding instead of seam26 Jun 2025US 2025/0206090 A1HÜBNER GmbH & Co.KG
- Gangway assembly and electrical coupler assembly for a multi-car vehicle, and multi-car vehicle with the gangway assembly or electrical coupler assembly15 May 2025US 2025/0158329 A1
- Nft roof crossbeam17 Oct 2024US 2024/0343275 A1ALSTOM Holdings
Most cited
By later US patents
- Mathematically optimized family of ultra low distortion bellow fold patterns67US 6,054,194 A2000
- End door for rail cars60US 3,995,563 AWhitehead & Kales Company · 1976
- Railway car47US 5,511,491 ATrinity Industries, Inc. · 1996
- Railway car46US 5,392,717 ATrinity Industries, Inc. · 1995
- Combination door and emergency stairway exit38US 4,216,725 APullman Incorporated · 1980