F04B 29/00
Positive-displacement machines for liquids: other pumps with movable
Official title: {Other pumps with movable, e.g. rotatable cylinders}
F04B29/00 (Positive-displacement machines for liquids: other pumps with movable) appears on 19 US grants and 11 published applications in this corpus.
Search patents in F04B- Granted patents
- 19
- Published applications
- 11
- Assignees
- 14
- Inventors
- 39
- Latest grant
- 7 May 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 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 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 1 |
| 2019 | 1 | 1 |
| 2020 | 2 | 3 |
| 2021 | 1 | 2 |
| 2022 | 0 | 0 |
| 2023 | 2 | 0 |
| 2024 | 1 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
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- Machine having a liquid lubrication system and a shaft4 Jul 2023US 11,692,466 B2Pratt & Whitney Canada Corp.
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- Rotary Cylinder Piston Compressor Pump and Compressor with Rotary Cylinder Piston Compressor Pump18 Nov 2021US 2021/0355943 A1Gree Green Refrigeration Technology Center Co., Ltd. of Zhuhai
- Piston limiting structure, compressor, and heat exchange apparatus4 Nov 2021US 2021/0340980 A1Gree Electric Appliances, Inc. of Zhuhai
- Machine having a liquid lubrication system and a shaft3 Dec 2020US 2020/0378281 A1Pratt & Whitney Canada Corp.
- Inflator24 Sep 2020US 2020/0300232 A1Beto Engineering & Marketing Co., Ltd.
Most cited
By later US patents
- Aerosol dispenser for fluid products comprising a piston pump assembly for generating compressed air36US 3,933,279 ACiba-Geigy Corporation · 1976
- Positive displacement pumps18US 5,228,840 AImpact MST Incorporated · 1993
- Compressor unit, particularly for refrigerators9US 4,184,810 ADanfoss A/S · 1980
- Aerosol container8US 3,995,779 ALawrence Peska Associates, Inc. · 1976
- Positive displacement centrifugal pump7US 5,484,268 AImpact MST Incorporated · 1996