B21H 5/025
Internally geared wheels
Official title: {Internally geared wheels}
B21H5/025 (Internally geared wheels) appears on 38 US grants and 23 published applications in this corpus.
Search patents in B21H- Granted patents
- 38
- Published applications
- 23
- Assignees
- 24
- Inventors
- 65
- Latest grant
- 22 Nov 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 1 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 2 |
| 2007 | 1 | 2 |
| 2008 | 1 | 2 |
| 2009 | 2 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 0 | 1 |
| 2013 | 3 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 2 |
| 2016 | 1 | 3 |
| 2017 | 0 | 1 |
| 2018 | 2 | 0 |
| 2019 | 3 | 1 |
| 2020 | 1 | 1 |
| 2021 | 1 | 1 |
| 2022 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method and forming system for producing a drum-shaped gear part22 Nov 2022US 11,504,762 B2Leifeld Metal Spinning AG
- Thin-walled hollow wheels with internal and external toothing, and apparatus and method for manufacturing the same15 Nov 2022US 11,498,114 B2Ernst Grob AG
- Method for producing a gas or liquid tank15 Jun 2021US 11,033,950 B2Leifeld Metal Spinning AG
- Method for roll-forming disk carriers or the like and the associated profile roller set31 Mar 2020US 10,603,705 B2TransForm Automotive LLC
- R-θ table apparatus and processing apparatus of internal thread30 Jul 2019US 10,363,597 B2M. H. Center, Ltd.
- Thin-walled hollow wheels with internal and external toothing, and apparatus and method for manufacturing the same25 Feb 2021US 2021/0054917 A1Ernst Grob AG
- Method and forming system for producing a drum-shaped gear part25 Jun 2020US 2020/0197999 A1Leifeld Metal Spinning AG
- Method for producing a gas or liquid tank24 Jan 2019US 2019/0022735 A1Leifeld Metal Spinning AG
- Method for roll-forming disk carriers or the like and the associated profile roller set2 Feb 2017US 2017/0028454 A1TransForm Automotive LLC
- R-theta table apparatus and processing apparatus of internal thread8 Sep 2016US 2016/0256915 A1M. H. Center, Ltd.
Most cited
By later US patents
- Toothed wheel for use in automobiles and its manufacturing method42US 5,310,432 AKubota Iron Works Co., Ltd. · 1994
- Torque transmitting structure and method of manufacture34US 5,384,949 AGeneral Motors Corporation · 1995
- Method for fabricating a dished hollow body possessing a linear or helical inner toothing18US 4,872,250 AErnst Grob AG · 1989
- Method for manufacturing internally geared parts18US 6,026,666 ADynamit Nobel Aktiengesellschaft · 2000
- Method and apparatus for manufacturing internal gear, internal gear structure and reduction mechanism unit having internal gear structure17US 5,584,202 AHitachi, Ltd. · 1996