B60M 1/12
Trolley lines
Official title: Trolley lines; Accessories therefor
B60M1/12 (Trolley lines) appears on 222 US grants and 191 published applications in this corpus.
Search patents in B60M- Granted patents
- 222
- Published applications
- 191
- Assignees
- 143
- Inventors
- 485
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 5 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 7 | 0 |
| 2000 | 2 | 0 |
| 2001 | 5 | 0 |
| 2002 | 2 | 1 |
| 2003 | 2 | 3 |
| 2004 | 2 | 1 |
| 2005 | 1 | 0 |
| 2006 | 1 | 1 |
| 2007 | 0 | 2 |
| 2008 | 0 | 1 |
| 2009 | 2 | 5 |
| 2010 | 2 | 9 |
| 2011 | 3 | 5 |
| 2012 | 3 | 7 |
| 2013 | 4 | 5 |
| 2014 | 7 | 5 |
| 2015 | 7 | 11 |
| 2016 | 9 | 19 |
| 2017 | 11 | 12 |
| 2018 | 10 | 16 |
| 2019 | 12 | 25 |
| 2020 | 20 | 16 |
| 2021 | 17 | 8 |
| 2022 | 8 | 10 |
| 2023 | 7 | 7 |
| 2024 | 8 | 13 |
| 2025 | 14 | 3 |
| 2026 | 5 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Trolley wire detection device and trolley wire detection system28 Apr 2026US 12,611,936 B2Beijing Jingdong Qianshi Technology Co., Ltd.
- Method and apparatus for maintaining contact between a slidable current collector and a conductor rail21 Apr 2026US 12,606,055 B2Caterpillar Inc.
- Overhead line system for construction machines for piece good and bulk material transport and construction machine17 Mar 2026US 12,576,751 B2Liebherr-Mining Equipment Colmar SAS
- Vehicle power supply system10 Mar 2026US 12,570,168 B2Transportation IP Holdings, LLC
- Process and system for pole and conductor installation for charging while moving13 Jan 2026US 12,522,109 B2Caterpillar Inc.
- Vehicle power supply system9 Jul 2026US 2026/0192689 A1Transportation IP Holdings, LLC
- Device for cleaning a contact line assembly2 Jul 2026US 2026/0185315 A1SSR Co., LTD
- Monitoring and maintenance system for compensated overhead contact lines11 Jun 2026US 2026/0158969 A1Fuenteblandor Holding, S.L.
- System for electrically powered aerial platforms to draw power from ground-based stations28 May 2026US 2026/0145826 A1
- Earth wire including composite core and encapsulation layer and method of use thereof30 Apr 2026US 2026/0121388 A1TS Conductor Corp.
Most cited
By later US patents
- Composite structure and method for its assembly32US 5,941,653 AAlstom Transport Electrification · 1999
- Apparatus for measuring the characteristic parameters of an overhead railway or traming line24US 6,778,284 B2Tecnogamma, S.p.A. · 2004
- Overhead electric traction system for railways19US 4,679,672 ABICC Public Limited Company · 1987
- Traffic system and power supply method17US 9,969,299 B2Mitsubishi Heavy Industries, Ltd. · 2018
- Arrangement for supplying power to an electric locomotive15US 5,788,033 AKrupp Fordertechnik GmbH · 1998