E21D 15/24
With axial screw-and-nut, rack-and-worm, or like mechanism
Official title: with axial screw-and-nut, rack-and-worm, or like mechanism
E21D15/24 (With axial screw-and-nut, rack-and-worm, or like mechanism) appears on 11 US grants and 7 published applications in this corpus.
Search patents in E21D- Granted patents
- 11
- Published applications
- 7
- Assignees
- 9
- Inventors
- 23
- Latest grant
- 3 May 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 2 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Telescoping formwork support with twist-proof region3 May 2022US 11,319,714 B2Doka GmbH
- Temporary support and raising device13 Nov 2018US 10,125,608 B2Mmc Innovations LLP
- Shoring apparatus with roller bearing12 May 2015US 9,027,898 B1
- Mine support having a linearly moveable and/or pivoting end plate8 Nov 2011US 8,052,352 B2FCI Holdings Delaware, Inc.
- Method for joining the functional parts of hydraulic or pneumatic working devices, and joining connection12 Jun 2007US 7,228,787 B2DBT GmbH
- Improved prop assemblies25 Jul 2024US 2024/0247506 A1R.J. Goldspink Pty Limited
- Formwork support29 Apr 2021US 2021/0123250 A1Doka GmbH
- Temporary Support and Raising Device28 Sep 2017US 2017/0275994 A1Mmc Innovations LLP
- Mine Support Having a Linearly Moveable and/or Pivoting End Plate2 Feb 2012US 2012/0027529 A1FCI Holdings Delaware, Inc.
- Mine support having a linearly moveable and/or pivoting end plate2 Oct 2008US 2008/0240868 A1FCI Holdings Delaware, Inc.
Most cited
By later US patents
- Shoring apparatus with roller bearing13US 9,027,898 B12015
- Improvement in or relating to a shoring leg: a shoring leg with a latch12US 5,318,388 ASGB Holdings Limited · 1994
- Quick-release pit prop8US 5,967,702 A1999
- Mine support having a linearly moveable and/or pivoting end plate8US 8,052,352 B2FCI Holdings Delaware, Inc. · 2011
- Mine prop7US 5,314,161 ABochumer Eisenhutte Heintzmann GmbH & Co. KG · 1994