E21B 19/083
Cam, rack or like feed mechanisms
E21B19/083 (Cam, rack or like feed mechanisms) appears on 81 US grants and 69 published applications in this corpus.
Search patents in E21B- Granted patents
- 81
- Published applications
- 69
- Assignees
- 47
- Inventors
- 172
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 2 |
| 2010 | 1 | 3 |
| 2011 | 1 | 1 |
| 2012 | 1 | 1 |
| 2013 | 0 | 5 |
| 2014 | 3 | 2 |
| 2015 | 2 | 3 |
| 2016 | 6 | 7 |
| 2017 | 2 | 4 |
| 2018 | 4 | 8 |
| 2019 | 5 | 4 |
| 2020 | 10 | 6 |
| 2021 | 5 | 4 |
| 2022 | 6 | 5 |
| 2023 | 3 | 2 |
| 2024 | 6 | 6 |
| 2025 | 5 | 1 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Jack for drilling11 Aug 2026US 12,704,029 B2Petro Well Services AS
- Horizontal directional drill with freewheel mode3 Mar 2026US 12,565,811 B2Vermeer Manufacturing Company
- Straddle seat pit launch directional drill14 Oct 2025US 12,442,251 B1Roddie, Inc.
- Bolter miner and tunneling system14 Oct 2025US 12,442,298 B2Ccteg Taiyuan Research Institute
- Horizontal directional drill with freewheel mode29 Jul 2025US 12,371,946 B2Vermeer Manufacturing Company
- Pipe loader apparatus8 Oct 2026US 2026/0308992 A1The Charles Machine Works, Inc.
- Horizontal directional drill with freewheel mode16 Jul 2026US 2026/0201750 A1Vermeer Manufacturing Company
- Hdd machine with lowered driveline5 Mar 2026US 2026/0063001 A1Vermeer Manufacturing Company
- Jack for drilling9 Oct 2025US 2025/0314138 A1Petro Well Services AS
- Tunneling and Anchoring Machine and Tunneling System20 Jun 2024US 2024/0200451 A1Ccteg Taiyuan Research Institute
Most cited
By later US patents
- Apparatus for inserting wick drains into the earth42US 5,213,449 A1993
- Apparatus and method for a drilling rig assembly24US 8,671,626 B1Astec Industries, Inc. · 2014
- Drilling rig employing tubular handling device24US 9,309,728 B2Nabors Drilling International Limited · 2016
- Drive mechanism for boring machine22US 7,134,513 B1Astec Industries, Inc. · 2006
- Mobile boring rig21US 5,269,107 AIng. Guenter Klemm Bohrtechnik GmbH · 1993