H01H 27/002
Wherein one single insertion movement of a key comprises an unlocking stroke
Official title: {wherein one single insertion movement of a key comprises an unlocking stroke and a switch actuating stroke, e.g. security switch for safety guards}
H01H27/002 (Wherein one single insertion movement of a key comprises an unlocking stroke) appears on 138 US grants and 93 published applications in this corpus.
Search patents in H01H- Granted patents
- 138
- Published applications
- 93
- Assignees
- 48
- Inventors
- 185
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 6 | 0 |
| 1998 | 4 | 0 |
| 1999 | 10 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 1 |
| 2002 | 3 | 2 |
| 2003 | 1 | 2 |
| 2004 | 3 | 3 |
| 2005 | 4 | 6 |
| 2006 | 4 | 2 |
| 2007 | 4 | 7 |
| 2008 | 8 | 12 |
| 2009 | 4 | 7 |
| 2010 | 5 | 2 |
| 2011 | 7 | 3 |
| 2012 | 3 | 4 |
| 2013 | 0 | 2 |
| 2014 | 5 | 1 |
| 2015 | 4 | 2 |
| 2016 | 0 | 3 |
| 2017 | 3 | 4 |
| 2018 | 2 | 1 |
| 2019 | 5 | 9 |
| 2020 | 2 | 8 |
| 2021 | 9 | 0 |
| 2022 | 4 | 0 |
| 2023 | 2 | 1 |
| 2024 | 1 | 8 |
| 2025 | 1 | 2 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Safety switch for guarding accesses19 May 2026US 12,633,477 B2Pizzato Elettrica S.R. L.
- Protective safety glove31 Mar 2026US 12,592,349 B1
- Electronically operated actuator device for safety assemblies and relative safety assembly17 Feb 2026US 12,553,570 B2Pizzato Elettrica S.R. L.
- Safety switch4 Mar 2025US 12,243,705 B2Keyence Corporation
- Safety switch20 Feb 2024US 11,908,654 B2Keyence Corporation
- Door lock device and electrical appliance5 Mar 2026US 2026/0060507 A1Illinois Tool Works Inc.
- Safety switch for access control13 Nov 2025US 2025/0349475 A1Pizzato Elettrica S.R. L.
- Handle safety assembly for industrial machines or plants6 Mar 2025US 2025/0075853 A1Pizzato Elettrica S.R. L.
- Electronically operated actuator device for safety assemblies and relative safety assembly12 Dec 2024US 2024/0410524 A1Pizzato Elettrica S.R. L.
- Safety apparatus, system and process28 Nov 2024US 2024/0395483 A1Pizzato Elettrica S.R. L.
Most cited
By later US patents
- Console switch105US 5,034,576 AProform Fitness Products, Inc. · 1991
- Safety switch assembly48US 5,464,954 AIdec Izumi Corporation · 1995
- Key switch46US 6,307,167 B1OMRON Corporation · 2001
- Safety switch38US 5,760,353 AEuchner GmbH + Co. KG · 1998
- Actuator-controlled keylock switch37US 4,904,829 ALa Telemecanique Electrique · 1990