B61L 19/06
Interlocking devices having electrical operation
B61L19/06 (Interlocking devices having electrical operation) appears on 73 US grants and 74 published applications in this corpus.
Search patents in B61L- Granted patents
- 73
- Published applications
- 74
- Assignees
- 43
- Inventors
- 196
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 1 |
| 2009 | 1 | 2 |
| 2010 | 1 | 0 |
| 2011 | 0 | 1 |
| 2012 | 2 | 3 |
| 2013 | 1 | 3 |
| 2014 | 2 | 6 |
| 2015 | 5 | 4 |
| 2016 | 4 | 9 |
| 2017 | 6 | 5 |
| 2018 | 4 | 4 |
| 2019 | 4 | 2 |
| 2020 | 4 | 5 |
| 2021 | 3 | 3 |
| 2022 | 1 | 4 |
| 2023 | 1 | 7 |
| 2024 | 6 | 8 |
| 2025 | 7 | 2 |
| 2026 | 5 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Train-ground interlocking method and system for rail transit train operation control19 May 2026US 12,630,203 B2Casco Signal Ltd.
- Switch control method for rail transit signal system, and apparatus for method10 Mar 2026US 12,570,337 B2Casco Signal Ltd.
- Rail transit signal system with multi-network integration10 Mar 2026US 12,570,340 B2Casco Signal Ltd.
- Safety device and safety method24 Feb 2026US 12,561,216 B2Hitachi, Ltd.
- Traveling vehicle system and traveling vehicle control method27 Jan 2026US 12,534,296 B2Murata Machinery, Ltd.
- Method and apparatus for derailment protection between adjacent wayside resource controllers, device, and medium2 Jul 2026US 2026/0184356 A1Casco Signal Ltd.
- Railway control and field device switching system25 Jun 2026US 2026/0181046 A1Hitachi Rail Sts USA, Inc.
- Switching system and switching method for multiple train supervision systems27 Nov 2025US 2025/0365254 A1Casco Signal Ltd.
- Method & apparatus for a train control system22 May 2025US 2025/0162627 A1
- System for securing communication between central controller and signaling devices in traffic signaling networks26 Dec 2024US 2024/0425094 A1Tata Consultancy Services Limited
Most cited
By later US patents
- Route conflict analysis system for control of railroads57US 4,122,523 AGeneral Signal Corporation · 1978
- Rules-based interlocking engine using virtual gates53US 5,463,552 AAEG Transportation Systems, Inc. · 1995
- Interlocking for a railway system44US 6,308,117 B1Westinghouse Brake and Signal Holdings Limited · 2001
- Programmable relay driver32US 6,259,978 B1Union Switch & Signal Inc. · 2001
- Computer-controlled interlocking system for a railway installation21US 4,641,243 ASiemens Aktiengesellschaft · 1987