F04D 15/0033
By-passing by increasing clearance between impeller and its casing
Official title: {By-passing by increasing clearance between impeller and its casing}
F04D15/0033 (By-passing by increasing clearance between impeller and its casing) appears on 29 US grants and 26 published applications in this corpus.
Search patents in F04D- Granted patents
- 29
- Published applications
- 26
- Assignees
- 29
- Inventors
- 59
- Latest grant
- 11 Apr 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 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 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 2 |
| 2010 | 1 | 3 |
| 2011 | 0 | 0 |
| 2012 | 3 | 1 |
| 2013 | 1 | 2 |
| 2014 | 1 | 1 |
| 2015 | 1 | 2 |
| 2016 | 0 | 2 |
| 2017 | 2 | 0 |
| 2018 | 2 | 0 |
| 2019 | 0 | 4 |
| 2020 | 1 | 4 |
| 2021 | 2 | 1 |
| 2022 | 3 | 1 |
| 2023 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Centrifugal pump and method of adjusting the distance of the wear plate from the impeller of a centrifugal pump11 Apr 2023US 11,624,367 B2
- Multistage pump with axial thrust optimization10 Jan 2023US 11,549,512 B2KSB SE & Co. KGaA
- Rotodynamic pump having a body defining a body cavity with a first and second housing portion defining a portion of an impeller cavity and disposed within the body cavity wherein the body cavity extends at least in part around the second housing portion and the housing portions defining an impeller clearance4 Oct 2022US 11,459,958 B2Pratt & Whitney Canada Corp.
- Hydraulically powered rotary actuator8 Mar 2022US 11,268,547 B2Weir Minerals Australia Ltd.
- Pump for pumping liquid as well as impeller assembly1 Feb 2022US 11,236,757 B2Xylem Europe GmbH
- A Multistage Pump With Axial Thrust Optimization10 Feb 2022US 2022/0042513 A1KSB SE & Co. KGaA
- Gas turbine engine operating point11 Mar 2021US 2021/0071672 A1ROLLS-ROYCE plc
- Rotodynamic pump and method24 Sep 2020US 2020/0300179 A1Pratt & Whitney Canada Corp.
- Hydrodynamic heater pump28 May 2020US 2020/0166044 A1Ventech, LLC
- Centrifugal pump and method of adjusting the distance of the wear plate from the impeller of a centrifugal pump16 Jan 2020US 2020/0018315 A1
Most cited
By later US patents
- Variable delivery pump for molten metal121US 5,509,791 A1996
- Two-stage rotodynamic blood pump with axially movable rotor assembly for adjusting hydraulic performance characteristics43US 8,210,829 B2The Cleveland Clinic Foundation · 2012
- Two-stage rotodynamic blood pump32US 9,162,019 B2The Cleveland Clinic Foundation · 2015
- Fluid discharge device and fluid discharge method24US 6,558,127 B2Matsushita Electric Industrial Co., Ltd. · 2003
- Variable capacity water pump via electromagnetic control17US 7,789,049 B2Honda Motor Co., Ltd. · 2010