F01C 1/16
With helical teeth
Official title: with helical teeth, e.g. chevron-shaped, screw type {(for non-parallel axes of movement F01C3/00)}
F01C1/16 (With helical teeth) appears on 92 US grants and 104 published applications in this corpus.
Search patents in F01C- Granted patents
- 92
- Published applications
- 104
- Assignees
- 56
- Inventors
- 176
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 0 |
| 2003 | 2 | 7 |
| 2004 | 2 | 4 |
| 2005 | 2 | 2 |
| 2006 | 6 | 2 |
| 2007 | 1 | 3 |
| 2008 | 0 | 1 |
| 2009 | 1 | 1 |
| 2010 | 0 | 3 |
| 2011 | 1 | 0 |
| 2012 | 2 | 5 |
| 2013 | 1 | 5 |
| 2014 | 3 | 3 |
| 2015 | 1 | 9 |
| 2016 | 2 | 4 |
| 2017 | 5 | 14 |
| 2018 | 6 | 10 |
| 2019 | 4 | 3 |
| 2020 | 5 | 6 |
| 2021 | 5 | 7 |
| 2022 | 5 | 3 |
| 2023 | 3 | 3 |
| 2024 | 5 | 2 |
| 2025 | 3 | 4 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Complex screw rotors with a central circular cross section connecting right-hand and left-hand sections of the rotors4 Nov 2025US 12,460,640 B2Industrial Technologies and Services, LLC
- Piston compressor and method in which such a piston compressor is used30 Sep 2025US 12,429,039 B2Atlas Copco Airpower, Naamloze Vennootschap
- Rotor pair for a compression block of a screw machine8 Jul 2025US 12,352,266 B2Kaeser Kompressoren SE
- Additively manufactured rotors for superchargers and expanders10 Dec 2024US 12,163,460 B2Eaton Intelligent Power Limited
- Methods and systems for sealing rotating equipment such as expanders or compressors22 Oct 2024US 12,123,499 B2
- Planetary rotor machine with double sheer synchronizing mechanism18 Jun 2026US 2026/0168381 A1Radius 1, LLC
- Complex screw rotors28 May 2026US 2026/0146608 A1
- Screw pump and its components9 Oct 2025US 2025/0314248 A1Illinois Tool Works Inc.
- Machine for expanding or compressing compressible media2 Oct 2025US 2025/0305497 A1BITZER Kuehlmaschinenbau GmbH
- Internal combustion engine21 Aug 2025US 2025/0264023 A1
Most cited
By later US patents
- Rotary machine with motor embedded in the rotor22US 4,758,132 AInstitut Cerac S. A. · 1988
- Screw-type compressor/expander with valves at each axial end of rotors19US 5,195,881 A1993
- Multi-step regenerated organic fluid helical screw expander hermetic induction generator system16US 4,185,465 ADunham-Bush, Inc. · 1980
- Screw rotor machine with spring and fluid biased balancing pistons15US 3,932,073 ASvenska Rotor Maskiner Aktiebolag · 1976
- Rotary screw machine with rotor thrust load balancing15US 3,947,078 ASullair Corporation · 1976