H01H 33/40
Using spring motor
Official title: using spring motor
H01H33/40 (Using spring motor) appears on 66 US grants and 74 published applications in this corpus.
Search patents in H01H- Granted patents
- 66
- Published applications
- 74
- Assignees
- 39
- Inventors
- 172
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 2 |
| 2008 | 1 | 2 |
| 2009 | 1 | 1 |
| 2010 | 1 | 2 |
| 2011 | 1 | 2 |
| 2012 | 4 | 6 |
| 2013 | 2 | 3 |
| 2014 | 4 | 7 |
| 2015 | 5 | 5 |
| 2016 | 6 | 1 |
| 2017 | 2 | 3 |
| 2018 | 1 | 5 |
| 2019 | 5 | 5 |
| 2020 | 5 | 11 |
| 2021 | 10 | 5 |
| 2022 | 5 | 1 |
| 2023 | 0 | 5 |
| 2024 | 2 | 3 |
| 2025 | 3 | 1 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Switch system28 Apr 2026US 12,614,684 B2ABB Schweiz AG
- Motor assembly and circuit breaker comprising same3 Mar 2026US 12,567,545 B2Ls Electric Co., Ltd.
- Operating mechanism for circuit breakers16 Dec 2025US 12,500,052 B2Hitachi Energy Ltd
- Actuating mechanism for operating a circuit breaker23 Sep 2025US 12,424,400 B2GE Vernova Infrastructure Technology LLC
- Switch system27 May 2025US 12,315,689 B2ABB Schweiz AG
- Vacuum circuit breaker6 Aug 2026US 2026/0229431 A1Hd Hyundai Electric Co., Ltd.
- Reverse force mechanism30 Apr 2026US 2026/0117835 A1Meidensha Corporation
- Operating mechanism and isolating switch19 Jun 2025US 2025/0201495 A1Chint Low Voltage Electrical Technology Co., Ltd.
- Actuation unit for a switching apparatus8 Aug 2024US 2024/0266123 A1ABB Schweiz AG
- Operating mechanism for circuit breakers2 May 2024US 2024/0145192 A1Hitachi Energy Ltd
Most cited
By later US patents
- Motorized loadbreak switch control system and method24US 7,432,787 B2Cooper Technologies Company · 2008
- Switchgear and switchgear operating mechanism10US 7,772,513 B2Kabushiki Kaisha Toshiba · 2010
- Circuit breaker8US 9,431,184 B2Lsis Co., Ltd. · 2016
- Circuit breaker control apparatus7US 5,151,567 AGEC Alsthom SA · 1992
- Stored-energy mechanism for a high-voltage circuit-breaker pole filled with an insulating gas7US 5,932,858 ASiemens Aktiengesellschaft · 1999