H01H 1/50
Means for increasing contact pressure, preventing vibration of contacts, holding contacts together
Official title: Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
H01H1/50 (Means for increasing contact pressure, preventing vibration of contacts, holding contacts together) appears on 629 US grants and 516 published applications in this corpus.
Search patents in H01H- Granted patents
- 629
- Published applications
- 516
- Assignees
- 304
- Inventors
- 1,262
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 11 | 0 |
| 1978 | 11 | 0 |
| 1979 | 6 | 0 |
| 1980 | 4 | 0 |
| 1981 | 4 | 0 |
| 1982 | 5 | 0 |
| 1983 | 3 | 0 |
| 1984 | 9 | 0 |
| 1985 | 5 | 0 |
| 1986 | 11 | 0 |
| 1987 | 10 | 0 |
| 1988 | 2 | 0 |
| 1989 | 15 | 0 |
| 1990 | 8 | 0 |
| 1991 | 13 | 0 |
| 1992 | 2 | 0 |
| 1993 | 6 | 0 |
| 1994 | 13 | 0 |
| 1995 | 6 | 0 |
| 1996 | 6 | 0 |
| 1997 | 10 | 0 |
| 1998 | 14 | 0 |
| 1999 | 12 | 0 |
| 2000 | 14 | 0 |
| 2001 | 13 | 0 |
| 2002 | 10 | 6 |
| 2003 | 8 | 8 |
| 2004 | 5 | 11 |
| 2005 | 6 | 5 |
| 2006 | 9 | 6 |
| 2007 | 3 | 6 |
| 2008 | 6 | 12 |
| 2009 | 4 | 8 |
| 2010 | 6 | 14 |
| 2011 | 6 | 8 |
| 2012 | 18 | 12 |
| 2013 | 12 | 30 |
| 2014 | 12 | 17 |
| 2015 | 30 | 41 |
| 2016 | 23 | 26 |
| 2017 | 31 | 25 |
| 2018 | 26 | 22 |
| 2019 | 21 | 28 |
| 2020 | 29 | 43 |
| 2021 | 23 | 34 |
| 2022 | 32 | 31 |
| 2023 | 31 | 33 |
| 2024 | 21 | 42 |
| 2025 | 22 | 26 |
| 2026 | 16 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H01H 1/54By magnetic force237
- H01H 1/504By thermal means77
- H01H 1/52Contacts adapted to act as latches35
- H01H 1/502The action of the contact pressure spring becoming active only after engagement23
- H01H 2001/506Fail safe contacts, i.e. the contacts being kept in a safe positionIndexing code23
- H01H 2001/508With mechanical means to prevent return/reverse movement of movable contact once openingIndexing code13
Recent patents
- Relay8 Sep 2026US 12,731,745 B2Xiamen Hongfa Electric Power Controls Co., Ltd.
- Relay8 Sep 2026US 12,731,747 B2Xiamen Hongfa Electric Power Controls Co., Ltd.
- Relay1 Sep 2026US 12,725,747 B2Xiamen Hongfa Electric Power Controls Co., Ltd.
- Switching device and method for operating a switching device11 Aug 2026US 12,706,255 B2Eaton Intelligent Power Limited
- Elastic member and relay11 Aug 2026US 12,706,265 B2Tyco Electronics (Shanghai) Co., Ltd.
- Vacuum circuit breaker6 Aug 2026US 2026/0229430 A1Hd Hyundai Electric Co., Ltd.
- Switching device30 Jul 2026US 2026/0221352 A1Ellenberger & Poensgen GmbH
- Switching device30 Jul 2026US 2026/0221367 A1Ellenberger & Poensgen GmbH
- Insulation rod and switch23 Jul 2026US 2026/0213086 A1Mitsubishi Electric Corporation
- Contact bridge arrangement and switching device with fixed contacts arranged between two contact bridges16 Jul 2026US 2026/0204491 A1TE Connectivity Solutions GmbH
Most cited
By later US patents
- Design and fabrication of broadband surface-micromachined micro-electro-mechanical switches for microwave and millimeter-wave applications270US 6,046,659 AHughes Electronics Corporation · 2000
- Electrical connector135US 4,867,713 AKabushiki Kaisha Toshiba · 1989
- MEMS device having contact and standoff bumps and related methods113US 6,876,482 B2Turnstone Systems, Inc. · 2005
- Molded case circuit breaker contact109US 5,313,180 AMerlin Gerin · 1994
- Molded case circuit breaker with contact bridge slowed down at the end of repulsion travel106US 5,310,971 AMerlin Gerin · 1994