F04C 28/125
With sliding valves controlled by the use of fluid other than the
Official title: {with sliding valves controlled by the use of fluid other than the working fluid}
F04C28/125 (With sliding valves controlled by the use of fluid other than the) appears on 114 US grants and 36 published applications in this corpus.
Search patents in F04C- Granted patents
- 114
- Published applications
- 36
- Assignees
- 49
- Inventors
- 179
- Latest grant
- 30 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 5 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 5 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 10 | 0 |
| 1986 | 11 | 0 |
| 1987 | 4 | 0 |
| 1988 | 5 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 5 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 0 |
| 2003 | 1 | 2 |
| 2004 | 1 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 3 |
| 2007 | 0 | 1 |
| 2008 | 1 | 2 |
| 2009 | 1 | 3 |
| 2010 | 1 | 1 |
| 2011 | 3 | 0 |
| 2012 | 1 | 2 |
| 2013 | 0 | 1 |
| 2014 | 1 | 1 |
| 2015 | 1 | 1 |
| 2016 | 1 | 3 |
| 2017 | 1 | 2 |
| 2018 | 3 | 3 |
| 2019 | 1 | 3 |
| 2020 | 2 | 1 |
| 2021 | 2 | 2 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 2 | 0 |
| 2025 | 2 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Screw compressor30 Dec 2025US 12,510,075 B2Palladio Compressors S.R.L.
- Compressor for heat exchange system, heat exchange system and method for controlling operation of compressor20 May 2025US 12,305,635 B2Carrier Corporation
- Self-positioning volume slide valve for screw compressor6 Aug 2024US 12,055,145 B2Copeland Industrial LP
- Compressor stop valve and associated system5 Mar 2024US 11,920,593 B2Ingersoll-Rand Industrial U.S., Inc.
- Rotary displacement compressor having a check valve and a backflow control valve arranged in series through a discharge pipe2 Aug 2022US 11,401,934 B2Hitachi Industrial Equipment Systems Co., Ltd.
- Screw Compressor23 Oct 2025US 2025/0327448 A1Palladio Compressors S.R.L.
- Compressor and controlling method of volume ratio thereof16 Oct 2025US 2025/0320871 A1Fu Sheng Industrial Co., Ltd.
- Self-Positioning Volume Slide Valve for Screw Compressor26 Jan 2023US 2023/0027313 A1Vilter Manufacturing Corporation
- Compressor for heat exchange system, heat exchange system and method for controlling operation of compressor16 Sep 2021US 2021/0285707 A1Carrier Corporation
- Compressor stop valve and associated system24 Jun 2021US 2021/0190071 A1Ingersoll-Rand Industrial U.S., Inc.
Most cited
By later US patents
- Micro-processor control of a movable slide stop and a movable slide valve in a helical screw rotary compressor with an enconomizer inlet port77US 4,609,329 AFrick Company · 1986
- Scroll-type variable-capacity compressor with bypass valve73US 5,451,146 ANippondenso Co., Ltd. · 1995
- Gas injection system for screw compressor72US 4,727,725 AHitachi, Ltd. · 1988
- Scroll-type variable-capacity compressor having two control valves68US 5,577,897 ANippon Soken, Inc. · 1996
- Constant evaporator pressure slide valve modulator for screw compressor refrigeration system65US 4,583,373 ADunham-Bush, Inc. · 1986