F01C 1/18
With similar tooth forms
Official title: with similar tooth forms (F01C1/16 takes precedence)
F01C1/18 (With similar tooth forms) appears on 30 US grants and 30 published applications in this corpus.
Search patents in F01C- Granted patents
- 30
- Published applications
- 30
- Assignees
- 25
- Inventors
- 51
- Latest grant
- 19 Dec 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 3 |
| 2011 | 1 | 1 |
| 2012 | 0 | 2 |
| 2013 | 0 | 1 |
| 2014 | 1 | 2 |
| 2015 | 2 | 4 |
| 2016 | 1 | 2 |
| 2017 | 3 | 1 |
| 2018 | 3 | 5 |
| 2019 | 6 | 2 |
| 2020 | 1 | 1 |
| 2021 | 2 | 3 |
| 2022 | 1 | 0 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- System to pump fluid and control thereof19 Dec 2023US 11,846,283 B2Project Phoenix, LLC
- Internal combustion engine having adjustable linking of its engine units22 Feb 2022US 11,255,258 B2Fuelsave GmbH
- Bi-helical toothed wheel with variable helix angle and non-encapsulated profile for a hydraulic gear apparatus30 Nov 2021US 11,187,227 B2Settima Meccanica S.r.l.
- Heat machine configured for realizing heat cycles and method for realizing heat cycles by means of such heat machine12 Oct 2021US 11,143,057 B2I.V.A.R. S.P.A.
- System to pump fluid and control thereof15 Dec 2020US 10,865,788 B2Project Phoenix, LLC
- Internal combustion engine having adjustable linking of its engine units14 Oct 2021US 2021/0317779 A1Fuelsave GmbH
- System to Pump Fluid and Control Thereof9 Sep 2021US 2021/0277893 A1Project Phoenix, LLC
- External gear machine6 May 2021US 2021/0131285 A1Robert Bosch GmbH
- Heat machine configured for realizing heat cycles and method for realizing heat cycles by means of such heat machine30 Apr 2020US 2020/0131942 A1I.V.A.R. S.P.A.
- Magnetically engaged pump12 Sep 2019US 2019/0277283 A1Wilden Pump & Engineering Co.
Most cited
By later US patents
- Fluid pump with axially adjustable gears13US 5,306,127 A1994
- Wave tooth gears using identical non-circular conjugating pitch curves11US 6,644,947 B2Tuthill Corporation · 2003
- Rotary piston engine10US 4,003,349 A1977
- Rotary fluid-driven motor with sealing elements9US 7,614,861 B2Hydro-Industries Tynat Ltd. · 2009
- Rotary internal combustion engine8US 4,633,829 A1987