E05B 81/52
Pneumatic or hydraulic circuits
Official title: Pneumatic or hydraulic circuits (for locking several wings simultaneously E05B77/50)
E05B81/52 (Pneumatic or hydraulic circuits) appears on 15 US grants and 11 published applications in this corpus.
Search patents in E05B- Granted patents
- 15
- Published applications
- 11
- Assignees
- 13
- Inventors
- 27
- Latest grant
- 22 Nov 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 2 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 1 | 2 |
| 2013 | 0 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 2 |
| 2018 | 1 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Automatic hatch cover for a container and methods of operation thereof22 Nov 2022US 11,505,220 B1
- Door latch activator for trailers or truck bodies26 Feb 2019US 10,214,941 B2Hyundai Translead
- Closing device for a motor-vehicle hood, and method9 Oct 2018US 10,094,148 B2Kiekert AG
- Door latch activator for trailers or truck bodies23 May 2017US 9,657,502 B2Hyundai Translead
- Emergency opening system for vehicle door or window3 Jun 2014US 8,739,466 B2Durban AB
- Automatic hatch cover for a container and methods of operation thereof10 Nov 2022US 2022/0355834 A1
- Door latch activator for trailers or truck bodies7 Sep 2017US 2017/0254117 A1Hyundai Translead
- Closing device for a motor-vehicle hood, and method6 Apr 2017US 2017/0096845 A1Kiekert AG
- Door latch activator for trailers or truck bodies13 Aug 2015US 2015/0225984 A1Hyundai Translead
- Internal locking apparatus and methods for making and using same14 Mar 2013US 2013/0063248 A1InnerLoc, Inc
Most cited
By later US patents
- Security system for loading doors48US 4,866,963 A1989
- Method and apparatus for a locking device19US 6,050,116 ALoad Defender Incorporated · 2000
- Locking-aid device for a lock17US 5,409,273 AMercedes-Benz AG · 1995
- Locking mechanism for a trailer door12US 5,685,578 AVersa Technologies, Inc. · 1997
- Internal locking apparatus and methods for making and using same8US 8,284,023 B2Inner Loc, LLC · 2012