B23B 51/0002
Drills with connected cutting heads
Official title: {Drills with connected cutting heads, e.g. with non-exchangeable cutting heads; Drills with a single insert extending across the rotational axis and having at least two radially extending cutting edges in the working position}
B23B51/0002 (Drills with connected cutting heads) appears on 361 US grants and 315 published applications in this corpus.
Search patents in B23B- Granted patents
- 361
- Published applications
- 315
- Assignees
- 155
- Inventors
- 602
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 6 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 6 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 6 | 0 |
| 1987 | 5 | 0 |
| 1988 | 5 | 0 |
| 1989 | 6 | 0 |
| 1990 | 3 | 0 |
| 1991 | 9 | 0 |
| 1992 | 10 | 0 |
| 1993 | 8 | 0 |
| 1994 | 6 | 0 |
| 1995 | 7 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 6 | 0 |
| 1999 | 18 | 0 |
| 2000 | 7 | 0 |
| 2001 | 11 | 10 |
| 2002 | 7 | 13 |
| 2003 | 17 | 18 |
| 2004 | 9 | 8 |
| 2005 | 9 | 12 |
| 2006 | 8 | 7 |
| 2007 | 8 | 5 |
| 2008 | 4 | 8 |
| 2009 | 4 | 6 |
| 2010 | 1 | 9 |
| 2011 | 4 | 4 |
| 2012 | 4 | 2 |
| 2013 | 8 | 2 |
| 2014 | 6 | 1 |
| 2015 | 2 | 3 |
| 2016 | 0 | 1 |
| 2017 | 3 | 8 |
| 2018 | 6 | 14 |
| 2019 | 9 | 33 |
| 2020 | 19 | 22 |
| 2021 | 14 | 28 |
| 2022 | 18 | 21 |
| 2023 | 15 | 29 |
| 2024 | 15 | 31 |
| 2025 | 11 | 11 |
| 2026 | 16 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Cutting insert, rotary tool, and method for manufacturing machined product8 Sep 2026US 12,728,464 B2KYOCERA Corporation
- Cutting plate and method and compression mold for producing a green body of the cutting plate1 Sep 2026US 12,722,217 B2Walter AG
- Hole-saw with brazed or welded endcap25 Aug 2026US 12,715,053 B2Milwaukee Electric Tool Corporation
- Modular drill with double sided cam4 Aug 2026US 12,697,665 B2Kennametal Inc.
- Drill body and manufacturing method of drill body28 Jul 2026US 12,691,507 B2Tungaloy Corporation
- Drilling tool including a step drill bit17 Sep 2026US 2026/0273632 A1Milwaukee Electric Tool Corporation
- Precision guide for a bowling ball drill bit6 Aug 2026US 2026/0225164 A1
- Masonry drill having five blades2 Jul 2026US 2026/0183848 A1Hilti Aktiengesellschaft
- Two-flute deep-hole drill for stainless steels and other high-alloy steel materials2 Jul 2026US 2026/0183850 A1botek Präzisionsbohrtechnik GmbH
- Cutting insert with cooling channels, a nozzle, a base plate, and a tool holder therefor11 Jun 2026US 2026/0158564 A1No Screw Ltd.
Most cited
By later US patents
- Non-metallic body cutting tools111US 5,865,571 ANorton Company · 1999
- Damaged bolt and screw removing devices97US 7,171,871 B2Eazypower Corporation · 2007
- Cutting tool assembly and a replaceable cutting head for use therein96US 5,957,631 AIscar, Ltd. · 1999
- Two-piece rotary metal-cutting tool and method for interconnecting the pieces96US 5,988,953 ASeco Tools AB · 1999
- Method for improving wear resistance of abrasive tools93US 6,227,188 B1Norton Company · 2001