B21H 7/007
Taper rolling
Official title: {Taper rolling, e.g. leaf springs}
B21H7/007 (Taper rolling) appears on 16 US grants and 7 published applications in this corpus.
Search patents in B21H- Granted patents
- 16
- Published applications
- 7
- Assignees
- 16
- Inventors
- 36
- Latest grant
- 2 Jan 2018
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 7 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 2 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Multi-tapered suspension component2 Jan 2018US 9,855,810 B2Hendrickson USA, L L C
- Multi-tapered suspension component30 May 2017US 9,662,950 B2Hendrickson USA, L L C
- Metalworking method wherein formed configuration locates blank6 Jul 1999US 5,918,497 AExedy Corporation
- Taper rolling - direct length measurement21 Sep 1993US 5,245,853 ADavy McKee (Sheffield) Limited
- Method and apparatus for making blanks of a profile varying lengthwise26 Mar 1991US 5,001,918 A
- Method for Producing a Leaf Spring, and Leaf Spring4 Jul 2019US 2019/0202254 A1Sogefi HD Suspensions Germany GmbH
- Multi-Tapered Suspension Component7 Sep 2017US 2017/0253100 A1Hendrickson USA, L.L.C.
- Multi-Tapered Suspension Component9 Apr 2015US 2015/0097322 A1Hendrickson USA, L L C
- Press forming machine, press forming method using press forming machine and rotor core of ac generator for automobiles manufactured by press forming method13 Nov 2014US 2014/0333157 A1Sigma & Hearts Co., Ltd.
- Multi-tapered suspension component10 Jul 2014US 2014/0191486 A1Hendrickson USA, L L C
Most cited
By later US patents
- Method of and apparatus for producing plate material having uniform width and lengthwise thickness variation29US 4,248,072 AAichi Steel Works, Ltd. · 1981
- Forming leveller11US 4,286,451 AThe Yoder Company · 1981
- Process of manufacturing a taper leaf spring and its device10US 4,215,558 ANHK Spring Co., Ltd. · 1980
- Metalworking method wherein formed configuration locates blank9US 5,918,497 AExedy Corporation · 1999
- Method of and apparatus for shaping metal billets6US 3,983,734 AEisenwerk-Gesellschaft Maximilianshutte mbH · 1976