H01H 35/38
Actuated by piston and cylinder
Official title: actuated by piston and cylinder
H01H35/38 (Actuated by piston and cylinder) appears on 108 US grants and 37 published applications in this corpus.
Search patents in H01H- Granted patents
- 108
- Published applications
- 37
- Assignees
- 82
- Inventors
- 182
- Latest grant
- 15 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 6 | 0 |
| 1988 | 6 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 5 | 0 |
| 1994 | 8 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 2 | 1 |
| 2007 | 1 | 2 |
| 2008 | 1 | 0 |
| 2009 | 1 | 4 |
| 2010 | 1 | 2 |
| 2011 | 3 | 5 |
| 2012 | 3 | 4 |
| 2013 | 3 | 2 |
| 2014 | 2 | 1 |
| 2015 | 2 | 1 |
| 2016 | 3 | 0 |
| 2017 | 2 | 2 |
| 2018 | 1 | 2 |
| 2019 | 4 | 4 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
| 2022 | 2 | 0 |
| 2023 | 0 | 3 |
| 2024 | 3 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Gas density relay with online self-checking function and checking method therefor15 Apr 2025US 12,276,699 B2Shanghai Roye Electric Co., Ltd.
- Gas density relay having simulation check function and simulation check method thereof1 Oct 2024US 12,105,148 B2Shanghai Roye Electric Co., Ltd.
- Differential pressure detection device2 Jul 2024US 12,025,526 B2Yamashin-Filter Corp.
- Pressure switch piston27 Feb 2024US 11,915,896 B2Eaton Intelligent Power Limited
- Hydraulic switch and hydraulic brake system24 May 2022US 11,338,787 B2Tektro Technology Corporation
- Pressure Threshold Detector for Medical Injector6 Feb 2025US 2025/0041517 A1Becton, Dickinson and Company
- Gas density relay having simulation check function and simulation check method thereof13 Jul 2023US 2023/0221370 A1Shanghai Roye Electric Co., Ltd.
- Gas density relay with online self-checking function and checking method therefor1 Jun 2023US 2023/0168302 A1Shanghai Roye Electric Co., Ltd.
- Pressure switch piston26 Jan 2023US 2023/0026683 A1Eaton Intelligent Power Limited
- Differential pressure detection device12 Aug 2021US 2021/0246991 A1Yamashin-Filter Corp.
Most cited
By later US patents
- Hydrostatic pressure responsive bypass safety switch52US 5,237,136 A1993
- Device for indicating abnormal pressure conditions in a tire on a motor vehicle in motion30US 4,694,273 A1987
- Pressure responsive circuit control unit having adjustable, interchangeable actuator components and cam-operated switch23US 3,937,912 AMartin Industries, Inc. · 1976
- Apparatus for detecting pressure22US 7,360,432 B2WäRtsilä Finland Oy · 2008
- Differential pressure switch21US 4,480,160 ADonaldson Company, Inc. · 1984