E21B 1/36
Tool-carrier piston type, i.e. in which the tool is connected to an
Official title: Tool-carrier piston type, i.e. in which the tool is connected to an impulse member
E21B1/36 (Tool-carrier piston type, i.e. in which the tool is connected to an) appears on 11 US grants and 11 published applications in this corpus.
Search patents in E21B- Granted patents
- 11
- Published applications
- 11
- Assignees
- 10
- Inventors
- 18
- Latest grant
- 18 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 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 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 3 |
| 2011 | 1 | 0 |
| 2012 | 1 | 1 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 1 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Drilling device with fluid column resonator18 Mar 2025US 12,252,937 B2Mincon International Limited
- Drill assembly and valve4 Apr 2023US 11,619,096 B2UGT Group Pty Ltd
- Apparatus, rock breaking machine and method of monitoring rock breaking machine19 Jul 2022US 11,391,093 B2Sandvik Mining and Construction Oy
- Rock drilling machine and use thereof for hindering occurrence and spreading of cavitation bubbles22 Jan 2019US 10,184,294 B2Epiroc Rock Drills Aktiebolag
- Fail-resistant hammer assembly for a valveless percussive drill31 Mar 2015US 8,991,515 B2J.H. Fletcher & Co.
- Drilling device with fluid column resonator21 Dec 2023US 2023/0407704 A1Mincon International Limited
- Apparatus, rock breaking machine and method of monitoring rock breaking machine30 Sep 2021US 2021/0301594 A1Sandvik Mining and Construction Oy
- Drill assembly and valve28 May 2020US 2020/0165873 A1UGT Group Pty Ltd
- Arrangement in impact unit21 Dec 2017US 2017/0361445 A1Sandvik Mining and Construction Oy
- Device And Method In Respect Of A Rock Drilling Machine And Rock Drilling Machine7 May 2015US 2015/0122117 A1Atlas Copco Rock Drills AB
Most cited
By later US patents
- Drillhead unit12US 4,294,317 AM.A.T. Industries, Inc. · 1981
- Hydraulic rock drill with stroke responsive advance5US 3,945,442 AChicago Pneumatic Tool Company · 1976
- Pressure-fluid-operated percussion device4US 7,878,263 B2Sandvik Mining and Construction Oy · 2011
- Impact applying mechanism2US 4,401,168 AConzinc Riotinto Malaysia Sendirian Berhard · 1983