G21C 7/14
Mechanical drive arrangements
G21C7/14 (Mechanical drive arrangements) appears on 95 US grants and 87 published applications in this corpus.
Search patents in G21C- Granted patents
- 95
- Published applications
- 87
- Assignees
- 54
- Inventors
- 231
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 5 |
| 2011 | 0 | 2 |
| 2012 | 0 | 0 |
| 2013 | 2 | 6 |
| 2014 | 4 | 6 |
| 2015 | 1 | 8 |
| 2016 | 4 | 4 |
| 2017 | 5 | 2 |
| 2018 | 5 | 8 |
| 2019 | 7 | 4 |
| 2020 | 10 | 9 |
| 2021 | 5 | 6 |
| 2022 | 10 | 6 |
| 2023 | 5 | 6 |
| 2024 | 2 | 3 |
| 2025 | 5 | 5 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Nuclear reactor and method of opening a nuclear reactor16 Jun 2026US 12,658,331 B2Rolls-Royce Smr Limited
- Control rod remote disconnect mechanism7 Oct 2025US 12,437,886 B2BWXT Advanced Technologies LLC
- Control drum controller for nuclear reactor system7 Oct 2025US 12,437,887 B2Standard Nuclear, Inc.
- Digital systems and methods for high precision control in nuclear reactors16 Sep 2025US 12,417,855 B2GE-Hitachi Nuclear Energy Americas LLC
- Control rod remote holdout mechanism13 May 2025US 12,300,396 B2BWXT Advanced Technologies LLC
- Control rod remote disconnect mechanism11 Jun 2026US 2026/0162838 A1BWXT Advanced Technologies LLC
- Control rod apparatus for small modular reactor, and small modular reactor comprising same19 Mar 2026US 2026/0081044 A1Dunedin Energy Systems Limited
- Abnormality detection device, abnormality detection method, and program for control rod drive device5 Mar 2026US 2026/0066143 A1Hitachi GE Vernova Nuclear Energy, Ltd.
- Control rod drive mechanism with drive shaft hold out mechanism12 Feb 2026US 2026/0045378 A1NuScale Power, LLC
- Drive mechanism, control rod drive mechanism, and nuclear reactor17 Jul 2025US 2025/0232887 A1Mitsubishi Heavy Industries, Ltd.
Most cited
By later US patents
- Method and apparatus for preventing relative rotation of tube members in a control rod drive mechanism96US 6,275,556 B1Westinghouse Electric Corp. · 2001
- Mechanical design of a light water breeder reactor33US 3,957,575 AThe United States of America as represented by the United States Energy Research and Development Administration · 1976
- Device for the automatic disconnection of a control rod and a nuclear reactor absorber cluster26US 5,606,582 ACommissariat a l'Engergie Atomique · 1997
- Regulating rod drive of nuclear reactor20US 4,124,442 A1978
- Reactivity control assembly for nuclear reactor20US 4,481,164 AThe United States of America as represented by the United States Department of Energy · 1984