F04C 15/0073
Couplings between rotors and input or output shafts acting by interengaging or
Official title: {Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft}
F04C15/0073 (Couplings between rotors and input or output shafts acting by interengaging or) appears on 135 US grants and 169 published applications in this corpus.
Search patents in F04C- Granted patents
- 135
- Published applications
- 169
- Assignees
- 122
- Inventors
- 375
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 0 |
| 2002 | 2 | 3 |
| 2003 | 1 | 2 |
| 2004 | 2 | 5 |
| 2005 | 2 | 8 |
| 2006 | 4 | 6 |
| 2007 | 6 | 1 |
| 2008 | 0 | 5 |
| 2009 | 1 | 10 |
| 2010 | 7 | 4 |
| 2011 | 3 | 1 |
| 2012 | 4 | 12 |
| 2013 | 1 | 5 |
| 2014 | 9 | 9 |
| 2015 | 7 | 8 |
| 2016 | 2 | 11 |
| 2017 | 11 | 11 |
| 2018 | 3 | 9 |
| 2019 | 7 | 7 |
| 2020 | 5 | 10 |
| 2021 | 6 | 8 |
| 2022 | 6 | 11 |
| 2023 | 12 | 5 |
| 2024 | 10 | 6 |
| 2025 | 5 | 9 |
| 2026 | 4 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Screw pump and its components4 Aug 2026US 12,698,769 B2Illinois Tool Works Inc.
- Screw pump and its components28 Jul 2026US 12,692,863 B2Illinois Tool Works Inc.
- Seal assembly for progressive cavity pump14 Jul 2026US 12,680,544 B2National Oilwell Varco, L. P.
- Gear pump parallel load path24 Mar 2026US 12,584,482 B1Pratt & Whitney Canada Corp.
- Apparatus and method for mechanically coupling a motor to a rotor of a progressive cavity pump18 Nov 2025US 12,473,915 B2Johnson & Johnson Surgical Vision, Inc.
- Gear pump parallel load path30 Jul 2026US 2026/0218702 A1Pratt & Whitney Canada Corp.
- Pump assembly25 Jun 2026US 2026/0177203 A1Pratt & Whitney Canada Corp.
- Apparatus and method for mechanically coupling a motor to a rotor of a progressive cavity pump21 May 2026US 2026/0139671 A1Johnson & Johnson Surgical Vision, Inc.
- Progressive cavity pump rotor4 Dec 2025US 2025/0369439 A1National Oilwell Varco, L. P.
- Seal assembly for progressive cavity pump4 Dec 2025US 2025/0369442 A1National Oilwell Varco, L. P.
Most cited
By later US patents
- Universal joint coupling in particular arranged on a universal joint shaft of an eccentric worm machine54US 6,196,922 B1Netzsch-Mohnopumpen GmbH · 2001
- Multi-groove and spline connection between gear shaft of a rotary piston machine with internal axis and method of making such a multigroove spline connection22US 4,827,800 ADanfoss A/S · 1989
- Isolated engine oil pump drive19US 6,183,230 B2General Motors Corporation · 2001
- Mud motor coupling system17US 10,288,065 B1National Oilwell DHT, L.P. · 2019
- Arrangement for mounting a gear on a shaft17US 4,171,939 ASundstrand Corporation · 1979