E21B 7/02
Drilling rigs characterised by means for land transport with their own drive
Official title: Drilling rigs characterised by means for land transport {with their own drive}, e.g. skid mounting or wheel mounting
E21B7/02 (Drilling rigs characterised by means for land transport with their own drive) appears on 1,217 US grants and 1,123 published applications in this corpus.
Search patents in E21B- Granted patents
- 1,217
- Published applications
- 1,123
- Assignees
- 492
- Inventors
- 2,183
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 14 | 0 |
| 1977 | 15 | 0 |
| 1978 | 23 | 0 |
| 1979 | 8 | 0 |
| 1980 | 16 | 0 |
| 1981 | 18 | 0 |
| 1982 | 9 | 0 |
| 1983 | 10 | 0 |
| 1984 | 14 | 0 |
| 1985 | 12 | 0 |
| 1986 | 9 | 0 |
| 1987 | 13 | 0 |
| 1988 | 4 | 0 |
| 1989 | 7 | 0 |
| 1990 | 6 | 0 |
| 1991 | 10 | 0 |
| 1992 | 12 | 0 |
| 1993 | 11 | 0 |
| 1994 | 7 | 0 |
| 1995 | 10 | 0 |
| 1996 | 6 | 0 |
| 1997 | 8 | 0 |
| 1998 | 10 | 0 |
| 1999 | 8 | 0 |
| 2000 | 12 | 0 |
| 2001 | 9 | 0 |
| 2002 | 5 | 4 |
| 2003 | 6 | 10 |
| 2004 | 8 | 14 |
| 2005 | 7 | 7 |
| 2006 | 7 | 20 |
| 2007 | 10 | 17 |
| 2008 | 15 | 25 |
| 2009 | 14 | 37 |
| 2010 | 23 | 31 |
| 2011 | 18 | 39 |
| 2012 | 23 | 22 |
| 2013 | 33 | 59 |
| 2014 | 32 | 54 |
| 2015 | 43 | 49 |
| 2016 | 32 | 57 |
| 2017 | 53 | 82 |
| 2018 | 52 | 76 |
| 2019 | 86 | 71 |
| 2020 | 84 | 94 |
| 2021 | 79 | 76 |
| 2022 | 75 | 64 |
| 2023 | 77 | 56 |
| 2024 | 67 | 75 |
| 2025 | 58 | 40 |
| 2026 | 29 | 44 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- E21B 7/025Rock drills, i.e. jumbo drills299
- E21B 7/022Control of the drilling operation284
- E21B 7/027Drills for drilling shallow holes209
- E21B 7/023The mast being foldable or telescopically retractable145
- E21B 7/024Having means for adapting to inclined terrain94
- E21B 7/026Having auxiliary platforms50
- E21B 7/021With a rotary table, i.e. a fixed rotary drive for a relatively40
Recent patents
- Construction machine and method for carrying out a construction work step8 Sep 2026US 12,729,586 B1Klemm Bohrtechnik GmbH
- Borehole fracture-deformation-wave velocity integrated intelligent sensing apparatus and method for engineering rock mass8 Sep 2026US 12,729,620 B2Northeastern University
- Automated drilling arrangement1 Sep 2026US 12,723,476 B2
- Grounding system18 Aug 2026US 12,709,211 B2Caterpillar Inc.
- Drilling and bolting tool18 Aug 2026US 12,709,981 B2Joy Global Underground Mining LLC
- Augers8 Oct 2026US 2026/0308981 A1Milwaukee Electric Tool Corporation
- Method and an arrangement for protecting a lubricating system of a rock drilling machine, and a mining machine8 Oct 2026US 2026/0309271 A1Sandvik Mining and Construction Oy
- Drill drive arrangement, multiple rotary drive arrangement, and drilling rig for civil engineering, as well as method for operating a drill drive arrangement for civil engineering1 Oct 2026US 2026/0298030 A1BAUER Maschinen GmbH
- Drill with modular electric skid1 Oct 2026US 2026/0298031 A1The Charles Machine Works, Inc.
- Drill rig with detachable, modular frame24 Sep 2026US 2026/0286780 A1
Most cited
By later US patents
- Slide out pump stand for hydraulic fracturing equipment239US 10,407,990 B2U.S. Well Services, LLC · 2019
- Parameter monitoring and control for an electric driven hydraulic fracking system192US 10,753,165 B1National Service Alliance—Houston LLC · 2020
- Variable frequency drive configuration for electric driven hydraulic fracking system177US 10,753,153 B1National Service Alliance—Houston LLC · 2020
- AC powered service rig160US 7,717,193 B2Nabors Canada · 2010
- Top drive torque restraint system154US 5,107,940 AHydratech · 1992