B23B 31/204
Using fluid-pressure means to actuate the gripping means
Official title: {using fluid-pressure means to actuate the gripping means (B23B31/207 take precedence)}
B23B31/204 (Using fluid-pressure means to actuate the gripping means) appears on 60 US grants and 34 published applications in this corpus.
Search patents in B23B- Granted patents
- 60
- Published applications
- 34
- Assignees
- 44
- Inventors
- 101
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 2 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 5 |
| 2006 | 1 | 2 |
| 2007 | 1 | 3 |
| 2008 | 1 | 2 |
| 2009 | 2 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 2 |
| 2014 | 2 | 4 |
| 2015 | 2 | 0 |
| 2016 | 1 | 2 |
| 2017 | 3 | 0 |
| 2018 | 0 | 0 |
| 2019 | 2 | 4 |
| 2020 | 0 | 1 |
| 2021 | 3 | 3 |
| 2022 | 2 | 1 |
| 2023 | 1 | 0 |
| 2024 | 1 | 1 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Modular hydraulic chucks4 Aug 2026US 12,697,662 B2Kennametal Inc.
- Clamping device3 Dec 2024US 12,158,169 B2Dmg Mori Co., Ltd.
- Rotational force transmission mechanism, turret tool rest, and lathe21 Feb 2023US 11,583,932 B2Yamazaki Mazak Corporation
- Handling unit and handling device13 Sep 2022US 11,440,204 B2Daiya Seiki Co., Ltd.
- Tool for removing collars5 Apr 2022US 11,292,108 B2Raytheon Technologies Corporation
- Modular hydraulic chucks30 Jan 2025US 2025/0033123 A1Kennametal Inc.
- Clamping device16 May 2024US 2024/0159259 A1Dmg Mori Co., Ltd.
- Ultrasonic spindle device with automatic tool changer17 Mar 2022US 2022/0080547 A1RPS Corporation
- Handling unit and handling device22 Jul 2021US 2021/0221010 A1Daiya Seiki Co., Ltd.
- Rotational force transmission mechanism, turret tool rest, and lathe13 May 2021US 2021/0138555 A1Yamazaki Mazak Corporation
Most cited
By later US patents
- Hydraulic chuck111US 5,156,043 AAir-Mo Hydraulics, Inc. · 1992
- Project plate system30US 4,662,043 ASheffer Collet Company · 1987
- Hydraulic chuck having ring collet21US 4,432,559 A1984
- Brake apparatus to retard relative movement between two members19US 4,577,732 AWABCO Westinghouse Steuerungstechnik GmbH & Co. · 1986
- Tool or workpiece chucking device18US 4,387,906 AEminentverktyg A.B. · 1983