E21D 20/006
Having magazines for storing and feeding anchoring-bolts
Official title: {having magazines for storing and feeding anchoring-bolts (combined feeding from racks and connecting of drill rods or the like E21B19/20)}
E21D20/006 (Having magazines for storing and feeding anchoring-bolts) appears on 60 US grants and 53 published applications in this corpus.
Search patents in E21D- Granted patents
- 60
- Published applications
- 53
- Assignees
- 35
- Inventors
- 106
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 2 |
| 2005 | 1 | 0 |
| 2006 | 1 | 7 |
| 2007 | 0 | 5 |
| 2008 | 7 | 3 |
| 2009 | 2 | 0 |
| 2010 | 3 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 2 |
| 2015 | 2 | 5 |
| 2016 | 2 | 2 |
| 2017 | 2 | 3 |
| 2018 | 5 | 1 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 4 |
| 2022 | 2 | 3 |
| 2023 | 2 | 5 |
| 2024 | 0 | 1 |
| 2025 | 3 | 2 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Drilling and bolting tool18 Aug 2026US 12,709,981 B2Joy Global Underground Mining LLC
- Bolter2 Jun 2026US 12,644,385 B2Joy Global Underground Mining LLC
- Mine drill module including gripper with folding arms17 Jun 2025US 12,331,643 B2J.H. Fletcher & Co.
- Cable handling device for cable bolts27 May 2025US 12,312,957 B2Sandvik Mining and Construction Oy
- Bolter6 May 2025US 12,291,968 B2Joy Global Underground Mining LLC
- Bolter24 Sep 2026US 2026/0286845 A1Joy Global Underground Mining LLC
- Bolting head, bolting rig and method9 Jul 2026US 2026/0193985 A1Sandvik Mining and Construction Oy
- Rock bolting rig and method for rock reinforcing14 May 2026US 2026/0132718 A1Sandvik Mining and Construction Oy
- Bolting rig and method for rock reinforcing14 May 2026US 2026/0132719 A1Sandvik Mining and Construction Oy
- Drilling or bolting apparatus and related methods26 Feb 2026US 2026/0055674 A1J.H. Fletcher & Co.
Most cited
By later US patents
- Roof bolter and process45US 4,398,850 ACopper Range Company · 1983
- Device for setting a rock bolt45US 5,114,279 AAtlas Copco Construction and Mining Technique AB · 1992
- Automatic roof bolting system for mines43US 4,229,124 AJoy Manufacturing Company · 1980
- Rock bolting apparatus42US 4,226,559 AAtlas Copco Aktiebolag · 1980
- Mine roof driller-bolter apparatus and method37US 4,420,277 AJoy Manufacturing Company · 1983