B61K 7/20
Positive wheel stops
B61K7/20 (Positive wheel stops) appears on 25 US grants and 12 published applications in this corpus.
Search patents in B61K- Granted patents
- 25
- Published applications
- 12
- Assignees
- 15
- Inventors
- 41
- Latest grant
- 20 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 1 | 1 |
| 2012 | 0 | 3 |
| 2013 | 4 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 2 |
| 2023 | 2 | 0 |
| 2024 | 2 | 1 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Rapid braking of shuttles powered by electromagnets20 May 2025US 12,304,753 B1Amazon Technologies, Inc.
- Foldable rail-mounted crane stop device8 Oct 2024US 12,110,216 B2Southeast University
- System and method for docking or undocking a track-wheel based device24 Sep 2024US 12,097,894 B2Nomadd Desert Solar Solutions Pte. Ltd.
- System and method for docking or undocking a track-wheel based device28 Nov 2023US 11,827,253 B2Nomadd Desert Solar Solutions Pte. Ltd.
- Buffer stop used for end of crane rails16 May 2023US 11,649,141 B2Southeast University
- Brake shoe for self-clamping retention of a unit that is transportable on rails2 Oct 2025US 2025/0305549 A1Siemens Energy Global GmbH & Co. KG
- System and method for docking or undocking a track-wheel based device8 Feb 2024US 2024/0043051 A1Nomadd Desert Solar Solutions Pte. Ltd.
- Buffer stop used for end of crane rails27 Jan 2022US 2022/0024728 A1Southeast University
- Foldable rail-mounted crane stop device27 Jan 2022US 2022/0024729 A1Southeast University
- System and method for docking or undocking a track-wheel based device5 Aug 2021US 2021/0242828 A1Nomadd Desert Solar Solutions Pte. Ltd.
Most cited
By later US patents
- Vat wheel lock24US 4,739,863 A1988
- Stop device for stopping a wheeled vehicle22US 4,216,724 ACGEE Alsthom · 1980
- Two-way safety trip for railway vehicles15US 5,601,259 ABoda Industries, Inc. · 1997
- Emergency stopping system for track mounted movable bullet targets and target trolleys14US 8,579,294 B2Action Target Inc. · 2013
- Railway car positioning apparatus10US 4,080,904 AHeyl & Patterson, Inc. · 1978