B23B 3/00
General-purpose turning-machines or devices
Official title: General-purpose turning-machines or devices, e.g. centre lathes with feed rod and lead screw; Sets of turning-machines
B23B3/00 (General-purpose turning-machines or devices) appears on 676 US grants and 546 published applications in this corpus.
Search patents in B23B- Granted patents
- 676
- Published applications
- 546
- Assignees
- 326
- Inventors
- 1,125
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 17 | 0 |
| 1978 | 10 | 0 |
| 1979 | 6 | 0 |
| 1980 | 9 | 0 |
| 1981 | 7 | 0 |
| 1982 | 14 | 0 |
| 1983 | 6 | 0 |
| 1984 | 6 | 0 |
| 1985 | 8 | 0 |
| 1986 | 12 | 0 |
| 1987 | 14 | 0 |
| 1988 | 12 | 0 |
| 1989 | 16 | 0 |
| 1990 | 7 | 0 |
| 1991 | 11 | 0 |
| 1992 | 10 | 0 |
| 1993 | 7 | 0 |
| 1994 | 6 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 12 | 0 |
| 1999 | 5 | 0 |
| 2000 | 11 | 0 |
| 2001 | 10 | 1 |
| 2002 | 4 | 10 |
| 2003 | 15 | 8 |
| 2004 | 8 | 7 |
| 2005 | 7 | 17 |
| 2006 | 15 | 13 |
| 2007 | 7 | 8 |
| 2008 | 9 | 17 |
| 2009 | 5 | 18 |
| 2010 | 8 | 15 |
| 2011 | 6 | 24 |
| 2012 | 13 | 14 |
| 2013 | 13 | 38 |
| 2014 | 23 | 40 |
| 2015 | 44 | 32 |
| 2016 | 34 | 31 |
| 2017 | 24 | 34 |
| 2018 | 31 | 30 |
| 2019 | 34 | 36 |
| 2020 | 27 | 39 |
| 2021 | 29 | 24 |
| 2022 | 26 | 23 |
| 2023 | 15 | 35 |
| 2024 | 18 | 20 |
| 2025 | 16 | 6 |
| 2026 | 14 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B23B 3/16Turret lathes for turning individually-chucked workpieces193
- B23B 3/06Turning-machines or devices characterised only by the special arrangement of constructional units188
- B23B 3/22Turning-machines or devices with rotary tool heads173
- B23B 3/30Turning-machines with two or more working-spindles135
- B23B 3/08Turning-machines characterised by the use of faceplates45
- B23B 3/02Small lathes7
- B23B 3/36Associations of only turning-machines directed to a particular metal-working result5
- B23B 3/04Turning-machines in which the workpiece is rotated by means at a distance3
All 9 subgroupsShow fewer
Recent patents
- Tool rest and machine tool25 Aug 2026US 12,715,048 B2Dmg Mori Co., Ltd.
- Machine tool18 Aug 2026US 12,708,974 B2Etxe-Tar, S.A.
- Machine tool having tool rest, control unit, tool storage unit, tool changing unit, and tool management unit4 Aug 2026US 12,697,693 B2Dmg Mori Co., Ltd.
- Machine tool with removable workpiece support28 Jul 2026US 12,691,501 B2Mazak Corporation
- Cutting tool mounting assembly with split, modular and wireless wear detection system16 Jun 2026US 12,654,230 B2Kennametal Inc.
- Machine tool8 Oct 2026US 2026/0307196 A1Etxe-Tar, S.A.
- Rotary tool device and machine tool27 Aug 2026US 2026/0249412 A1Citizen Machinery Co., Ltd.
- Tool holder for precision holes on the spindle centerline in a lathe9 Jul 2026US 2026/0192368 A1
- Chuck soft jaw, chuck soft jaw making method, workpiece machining method, and hybrid machine tool11 Jun 2026US 2026/0158562 A1Yamazaki Mazak Corporation
- Yoke clamping system, grinding machine with a yoke clamping system and method for using a yoke clamping system28 May 2026US 2026/0145297 A1Adelbert Haas GmbH
Most cited
By later US patents
- Tool changer for vertical boring machine1,027US 4,321,746 AWhite Consolidated Industries, Inc. · 1982
- Split frame portable machining lathe81US 4,739,685 A1988
- Segmented sliding bearing arrangement for portable lathe77US 4,829,860 ATri Tool Inc. · 1989
- Clamshell pipe lathe having improved bearing arrangement74US 5,549,024 A1996
- Machine-tool comprising two opposed coaxial spindles61US 4,457,193 ATarex Machines S.A. · 1984