H01H 27/00
Switches operated by a removable member
Official title: Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings (combined with plug-and-socket connectors H01R13/70; with current-carrying plug H01R31/08)
H01H27/00 (Switches operated by a removable member) appears on 471 US grants and 250 published applications in this corpus.
Search patents in H01H- Granted patents
- 471
- Published applications
- 250
- Assignees
- 244
- Inventors
- 755
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 9 | 0 |
| 1978 | 10 | 0 |
| 1979 | 9 | 0 |
| 1980 | 8 | 0 |
| 1981 | 12 | 0 |
| 1982 | 12 | 0 |
| 1983 | 9 | 0 |
| 1984 | 13 | 0 |
| 1985 | 6 | 0 |
| 1986 | 10 | 0 |
| 1987 | 18 | 0 |
| 1988 | 8 | 0 |
| 1989 | 4 | 0 |
| 1990 | 12 | 0 |
| 1991 | 10 | 0 |
| 1992 | 6 | 0 |
| 1993 | 10 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 9 | 0 |
| 1997 | 11 | 0 |
| 1998 | 14 | 0 |
| 1999 | 16 | 0 |
| 2000 | 8 | 0 |
| 2001 | 7 | 4 |
| 2002 | 10 | 7 |
| 2003 | 6 | 7 |
| 2004 | 7 | 12 |
| 2005 | 9 | 13 |
| 2006 | 11 | 11 |
| 2007 | 10 | 13 |
| 2008 | 11 | 19 |
| 2009 | 9 | 16 |
| 2010 | 10 | 11 |
| 2011 | 15 | 8 |
| 2012 | 6 | 8 |
| 2013 | 3 | 8 |
| 2014 | 9 | 6 |
| 2015 | 11 | 13 |
| 2016 | 7 | 12 |
| 2017 | 18 | 15 |
| 2018 | 15 | 6 |
| 2019 | 11 | 16 |
| 2020 | 10 | 12 |
| 2021 | 11 | 5 |
| 2022 | 10 | 1 |
| 2023 | 3 | 4 |
| 2024 | 5 | 11 |
| 2025 | 2 | 5 |
| 2026 | 4 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H01H 27/06Key inserted and then turned to effect operation of the switch168
- H01H 27/002Wherein one single insertion movement of a key comprises an unlocking stroke138
- H01H 27/04Insulating plug or plate inserted between normally closed contacts30
- H01H 27/10Switch operated by setting members according to a single predetermined combination out19
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
- Disconnection assembly for tethered electric vehicle24 Feb 2026US 12,558,974 B2Caterpillar SARL
- 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
- Lanyard safety device30 Jul 2026US 2026/0217345 A1AB Volvo Penta
- Lanyard safety device30 Jul 2026US 2026/0217355 A1AB Volvo Penta
- Contact switch, safety door and elevator system2 Jul 2026US 2026/0188599 A1Otis Elevator Company
- Ignition switch21 May 2026US 2026/0139652 A1Honeywell International Inc.
- Dc socket and power supply device23 Apr 2026US 2026/0112850 A1Schneider Electric Industries SAS
Most cited
By later US patents
- Conscious effort safety switch150US 4,947,009 AMcGill Manufacturing Company, Inc. · 1990
- Electrical and pneumatic lock-out device142US 6,268,574 B12001
- Reverse wiring indicator for GFCI receptacles114US 5,541,800 AHubbell Incorporated · 1996
- Safety system for power equipment113US 7,055,417 B1Sd3, LLC · 2006
- Console switch105US 5,034,576 AProform Fitness Products, Inc. · 1991