B61L 1/025
Actuated by variation of resistance or by piezoelectricity
Official title: {actuated by variation of resistance or by piezoelectricity}
B61L1/025 (Actuated by variation of resistance or by piezoelectricity) appears on 6 US grants and 5 published applications in this corpus.
Search patents in B61L- Granted patents
- 6
- Published applications
- 5
- Assignees
- 8
- Inventors
- 21
- Latest grant
- 1 Feb 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 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 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 3 |
| 2019 | 1 | 0 |
| 2020 | 1 | 1 |
| 2021 | 1 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Wayside railway sensor package and method for application1 Feb 2022US 11,235,788 B2Union Pacific Railroad Company
- Electronic circuit controller for railway switch machine, railway switch machine and railway switching system including same23 Mar 2021US 10,953,897 B2Hitachi Rail Sts USA, Inc.
- Magnetic rail shunt with variable resistor3 Nov 2020US 10,822,003 B2Alstom Transport Technologies
- Methods and systems for alerting a user to the presence of a fault in an electromechanical system in a railway infrastructure8 Oct 2019US 10,435,048 B2Thales Holdings UK PLC
- Railway wheel sensors14 Jul 1992US 5,129,606 AJDR Systems Corporation
- Rail sensor unit14 Mar 2024US 2024/0083477 A1DSRailTech, a.s.
- Wayside railway sensor package and method for application23 Jan 2020US 2020/0023871 A1Union Pacific Railroad Company
- Methods and systems for alerting a user to the presence of a fault in an electromechanical system in a railway infrastructure7 Jun 2018US 2018/0154913 A1Thales Holdings UK PLC
- Magnetic rail shunt with variable resistor26 Apr 2018US 2018/0111632 A1Alstom Transport Technologies
- Electronic circuit controller for railway switch machine, railway switch machine and railway switching system including same5 Apr 2018US 2018/0093682 A1Ansaldo STS USA, Inc.
Most cited
By later US patents
- Railway wheel sensors15US 5,129,606 AJDR Systems Corporation · 1992
- Differential clamp-on railway vehicle wheel detector11US 4,200,856 AWestinghouse Air Brake Company · 1980
- Wayside railway sensor package and method for application6US 11,235,788 B2Union Pacific Railroad Company · 2022
- Magnetic rail shunt with variable resistor2US 10,822,003 B2Alstom Transport Technologies · 2020