B66C 11/04
Underhung trolleys
Official title: Underhung trolleys (power-operated hoists with driving motor and drum or barrel contained in a common housing B66D3/20)
B66C11/04 (Underhung trolleys) appears on 91 US grants and 88 published applications in this corpus.
Search patents in B66C- Granted patents
- 91
- Published applications
- 88
- Assignees
- 56
- Inventors
- 232
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 3 | 2 |
| 2003 | 3 | 1 |
| 2004 | 1 | 2 |
| 2005 | 2 | 2 |
| 2006 | 1 | 1 |
| 2007 | 1 | 2 |
| 2008 | 0 | 0 |
| 2009 | 2 | 4 |
| 2010 | 3 | 1 |
| 2011 | 2 | 4 |
| 2012 | 3 | 2 |
| 2013 | 1 | 2 |
| 2014 | 2 | 4 |
| 2015 | 1 | 4 |
| 2016 | 3 | 2 |
| 2017 | 4 | 11 |
| 2018 | 5 | 2 |
| 2019 | 5 | 5 |
| 2020 | 7 | 8 |
| 2021 | 6 | 6 |
| 2022 | 4 | 13 |
| 2023 | 6 | 2 |
| 2024 | 5 | 2 |
| 2025 | 7 | 3 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Monorail hoist transportation robot driven by permanent magnet and variable frequency of explosion-proof lithium battery9 Jun 2026US 12,649,644 B2China University of Mining and Technology
- Product transport and storage apparatus and method of use to eliminate product delivery packaging2 Dec 2025US 12,485,941 B2
- OHT vehicle traction device and method for recoverying malfunctioned vehicle14 Oct 2025US 12,441,374 B2Semes Co., Ltd.
- Article transport vehicle12 Aug 2025US 12,387,961 B2Daifuku Co., Ltd.
- Modular crane component system8 Jul 2025US 12,351,437 B2
- Switchboard power equipment lifting device30 Jul 2026US 2026/0217500 A1Ls Electric Co., Ltd.
- Monorail hoist transportation robot driven by permanent magnet and variable frequency of explosion-proof lithium battery29 Jan 2026US 2026/0028205 A1China University of Mining and Technology
- Chargeable hoists, in-rail charging assemblies, subject transport units, and related methods18 Dec 2025US 2025/0382159 A1Liko Research & Development AB
- Trolley Single Point Adjustment System27 Nov 2025US 2025/0361091 A1
- Low Headroom Hook Block for Wire Rope Hoist13 Feb 2025US 2025/0051146 A1Columbus McKinnon Corporation
Most cited
By later US patents
- Traveling mechanism in a lifting arrangement which is moveable on rails29US 6,058,849 AMannesmann Aktiengesellschaft · 2000
- Crane trolley27US 4,423,685 AMannesmann Aktiengesellschaft · 1984
- Hoist apparatus26US 6,966,544 B2MHE Technologies, Inc. · 2005
- Powered auxiliary hoist mechanism for a gantry crane26US 7,546,929 B2Marine Travelift, Inc. · 2009
- Overhead monorail system18US 6,450,318 B1TEC Engineering Corporation · 2002