E02D 29/1418
With implements to assist in lifting
Official title: {with implements to assist in lifting, e.g. counterweights, springs (lifting devices for covers B66F19/005)}
E02D29/1418 (With implements to assist in lifting) appears on 62 US grants and 55 published applications in this corpus.
Search patents in E02D- Granted patents
- 62
- Published applications
- 55
- Assignees
- 41
- Inventors
- 109
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 0 |
| 2003 | 2 | 1 |
| 2004 | 4 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 3 |
| 2007 | 0 | 4 |
| 2008 | 2 | 5 |
| 2009 | 1 | 4 |
| 2010 | 3 | 1 |
| 2011 | 1 | 3 |
| 2012 | 1 | 3 |
| 2013 | 3 | 0 |
| 2014 | 3 | 5 |
| 2015 | 2 | 1 |
| 2016 | 5 | 5 |
| 2017 | 0 | 2 |
| 2018 | 4 | 1 |
| 2019 | 1 | 2 |
| 2020 | 1 | 1 |
| 2021 | 5 | 5 |
| 2022 | 1 | 2 |
| 2023 | 0 | 0 |
| 2024 | 3 | 3 |
| 2025 | 1 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Frame and cover for inground utility enclosures21 Jul 2026US 12,686,988 B2Omega Metalworks LLC
- Modular access cover15 Jul 2025US 12,359,391 B2Access Covers Australia Pty Ltd
- Emergency opening device for a closure22 Oct 2024US 12,123,244 B2Nowak Innovations SpóLka Z Ograniczona Odpowiedzialnoscia
- Pier hatch control system30 Apr 2024US 11,970,831 B2
- Electronic well lid based on electric control travel switch control23 Apr 2024US 11,965,305 B1Jinan Yinghua Automation Technology Co., Ltd
- Hybrid hand hole28 May 2026US 2026/0146399 A1
- Emergency opening device for a closure20 Mar 2025US 2025/0092733 A1Nowak Innovations SpóLka Z Ograniczona Odpowiedzialnoscia
- Device for accessing an underground facility, comprising an adjustable assistance cylinder6 Mar 2025US 2025/0075461 A1EJ Emea
- Frame and cover for inground utility enclosures18 Jul 2024US 2024/0240424 A1Omega Metalworks LLC
- Electronic well lid based on electric control travel switch control16 May 2024US 2024/0159011 A1Jinan Yinghua Automation Technology Co., Ltd
Most cited
By later US patents
- Waterproof pit cover78US 5,950,368 ADabico, Inc. · 1999
- Aircraft servicing pit lid with lift control36US 5,465,862 ADabico, Inc. · 1995
- Manhole cover security lock with controlled pressure release30US 7,484,908 B22009
- Counterbalanced door assembly with reduced initial closing force29US 5,205,073 A1993
- Cover for closing surface disposed utility access opening27US 6,393,771 B12002