H01H 2235/012
Euler spring
H01H2235/012 (Euler spring) appears on 17 US grants and 8 published applications in this corpus.
Search patents in H01H- Granted patents
- 17
- Published applications
- 8
- Assignees
- 11
- Inventors
- 31
- Latest grant
- 17 Nov 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 2 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 1 |
| 2019 | 0 | 1 |
| 2020 | 2 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Keyswitch mechanism with horizontal motion return mechanism17 Nov 2020US 10,840,038 B2
- Press sound producing keyboard switch12 May 2020US 10,650,987 B2
- Framework of relay and relay4 Sep 2018US 10,068,731 B2Xiamen Hongfa Electric Power Controls Co., Ltd.
- Frame-supported circuit breaker having automatic locking function9 Aug 2016US 9,412,539 B2Hubei Shengjia Wiring Co., Ltd.
- Circuit breaker5 Jul 2016US 9,384,912 B2ABB AB
- Switch device29 Jan 2026US 2026/0031289 A1
- Input key assembly and input device28 Nov 2024US 2024/0393889 A1Razer (Asia-Pacific) Pte. Ltd.
- Press sound producing keyboard switch28 Mar 2019US 2019/0096606 A1Dongguan City Kaihua Electronics Co., Ltd
- Thin keyboard, keyboard overlay and keyswitch20 Dec 2018US 2018/0366284 A1
- Framework of relay and relay12 May 2016US 2016/0133404 A1Xiamen Hongfa Electric Power Controls Co., Ltd.
Most cited
By later US patents
- Low profile tactile keyswitch43US 5,268,545 ALexmark International, Inc. · 1993
- Buckling spring torsional snap actuator31US 4,118,611 AInternational Business Machines Corporation · 1978
- Membrane keyboard switch mounting19US 4,605,828 AInternational Business Machines Corporation · 1986
- Rocking switch actuator for a low force membrane contact switch17US 4,528,431 AInternational Business Machines Corporation · 1985
- Quiet key switch12US 4,859,820 AAT&T Information Systems Inc. · 1989