E05F 3/221
Mechanical power-locks
Official title: {Mechanical power-locks, e.g. for holding the wing open or for free-moving zones}
E05F3/221 (Mechanical power-locks) appears on 152 US grants and 70 published applications in this corpus.
Search patents in E05F- Granted patents
- 152
- Published applications
- 70
- Assignees
- 66
- Inventors
- 221
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 1 | 0 |
| 1987 | 5 | 0 |
| 1988 | 4 | 0 |
| 1989 | 7 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 6 | 0 |
| 2000 | 6 | 0 |
| 2001 | 4 | 1 |
| 2002 | 4 | 1 |
| 2003 | 5 | 2 |
| 2004 | 0 | 2 |
| 2005 | 3 | 4 |
| 2006 | 3 | 4 |
| 2007 | 2 | 4 |
| 2008 | 1 | 2 |
| 2009 | 1 | 3 |
| 2010 | 2 | 0 |
| 2011 | 1 | 3 |
| 2012 | 3 | 3 |
| 2013 | 2 | 2 |
| 2014 | 5 | 1 |
| 2015 | 4 | 0 |
| 2016 | 1 | 1 |
| 2017 | 2 | 4 |
| 2018 | 4 | 9 |
| 2019 | 2 | 2 |
| 2020 | 7 | 4 |
| 2021 | 5 | 7 |
| 2022 | 4 | 6 |
| 2023 | 7 | 1 |
| 2024 | 3 | 1 |
| 2025 | 2 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hold-open device for door closers26 May 2026US 12,637,889 B2Schlage Lock Company LLC
- Door closer with power close9 Sep 2025US 12,411,506 B2ASSA ABLOY Accessories and Door Controls Group, Inc.
- Damped door closer system and method17 Jun 2025US 12,331,580 B1Andersen Corporation
- Stopper device of door closer31 Dec 2024US 12,180,775 B1Worldcross Co., Ltd.
- Modular hold-open device for door closers27 Aug 2024US 12,071,806 B2Schlage Lock Company LLC
- Hold-open device for door closers24 Sep 2026US 2026/0286758 A1Schlage Lock Company LLC
- Modular hold-open device for door closers19 Jun 2025US 2025/0198211 A1Schlage Lock Company LLC
- Power doors for motor vehicles having hold open control systems and methods6 Mar 2025US 2025/0075553 A1Magna Closures Inc.
- Door closer with power close4 Apr 2024US 2024/0111315 A1ASSA ABLOY Accessories and Door Controls Group, Inc.
- Modular hold-open device for door closers5 Oct 2023US 2023/0313585 A1Schlage Lock Company LLC
Most cited
By later US patents
- Intelligent door restraint99US 8,225,458 B12012
- Automatic door operator for swing doors81US 4,501,090 AChikura Kogyo Kabushiki Kaisha · 1985
- Releasable hold-open device for a door closer78US 4,506,407 ASchlage Lock Company LLC · 1985
- Intelligent door restraint75US 9,121,217 B12015
- Door closure device68US 3,934,306 AFederal Sign and Signal Corporation · 1976