E21D 9/115
With cutting tools mounted pivotably or slidable on the head
Official title: {with cutting tools mounted pivotably or slidable on the head}
E21D9/115 (With cutting tools mounted pivotably or slidable on the head) appears on 10 US grants and 5 published applications in this corpus.
Search patents in E21D- Granted patents
- 10
- Published applications
- 5
- Assignees
- 11
- Inventors
- 29
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 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 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method, arrangement and machine for full face reaming24 Feb 2026US 12,560,087 B2Bergteamet AB
- Cutting tool for a tunnel boring machine and a tunnel boring machine20 Sep 2022US 11,448,067 B2Herrenknecht AG
- Retractable auger head31 Dec 2019US 10,519,719 B2Radius HDD Direct, LLC
- Cutting device with function of changing diameter in small range for soft rock shield machine15 Apr 2014US 8,696,068 B2China Rall Way Tunneling Equipment Co., Ltd.
- Shield tunneling machine11 Jul 2006US 7,073,869 B2Nakakuro Construction Co., Ltd.
- Method, arrangement and machine for full face reaming18 Jul 2024US 2024/0240562 A1Bergteamet AB
- Cutting tool for a tunnel boring machine and a tunnel boring machine12 May 2022US 2022/0145757 A1Herrenknecht AG
- Retractable Auger Head30 Nov 2017US 2017/0342776 A1Radius HDD Direct, LLC
- Cutting Device with Function of Changing Diameter in Small Range for Soft Rock Shield Machine4 Oct 2012US 2012/0248848 A1China Rall Way Tunneling Equipment Co., Ltd.
- Shield tunneling machine14 Apr 2005US 2005/0077775 A1Nakakuro Construction Co., Ltd.
Most cited
By later US patents
- Automatic control system and method for a machine used for excavating drifts, tunnels, stopes, or caverns43US 5,938,288 AHDRK Mining Research Limited · 1999
- Method and machine for excavating drifts, tunnels, stopes, caverns or the like13US 5,340,199 AHDRK Mining Research Limited · 1994
- Shield tunneling machine3US 7,073,869 B2Nakakuro Construction Co., Ltd. · 2006
- Tunnel boring machine2US 5,104,262 AAtlas Copco Construction and Mining Technique AB · 1992
- Tunneling machines and other cutting machines1US 4,170,383 ABouygues · 1979