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F04B7/0258
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Parent Industries
F
MECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS
F04
Liquid pumps
F04B
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS
F04B7/00
Piston machines or pumps characterised by having positively-driven valving
Current Industry
F04B7/0258
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Patents Grants
last 30 patents
Information
Patent Grant
Thick matter pump with a cleaning cartridge and blocking slide
Patent number
5,957,675
Issue date
Sep 28, 1999
Putzmeister Aktiengesellschaft
Klaus Buehrer
B08 - CLEANING
Information
Patent Grant
Slide valve for a twin-cylinder pump for viscous fluids
Patent number
5,746,247
Issue date
May 5, 1998
Putzmeister-Werk Maschinenfabrik GmbH
Karl Schlecht
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Method and device for controlling a double-cylinder thick matter pump
Patent number
5,344,290
Issue date
Sep 6, 1994
Putzmeister-Werk Maschinenfabrik GmbH
Hartmut Benckert
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Transfer tube material flow management
Patent number
5,330,327
Issue date
Jul 19, 1994
Schwing America, Inc.
Thomas M. Anderson
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Slurry pump with discharge cylinders, especially two-cylinder concr...
Patent number
5,316,453
Issue date
May 31, 1994
Friedrich Wilh. Schwing GmbH
Friedrich Schwing
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Method of recovering energy from reverse osmosis waste streams
Patent number
5,306,428
Issue date
Apr 26, 1994
John B. Tonner
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Two-cylinder viscous liquid pump with pipe switch
Patent number
4,681,022
Issue date
Jul 21, 1987
Friedrich Wilh. Schwing GmbH
Friedrich Schwing
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Valve unit for use in concrete pumps
Patent number
4,466,782
Issue date
Aug 21, 1984
Niigata Engineering Co., Ltd.
Shigeaki Hirashima
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Pivotable pipe slide for use in a two cylinder concrete pump
Patent number
4,173,436
Issue date
Nov 6, 1979
Maschinenfabrik Walter Scheele KG
Heinz Bille
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
3552440
Patent number
3,552,440
Issue date
Jan 5, 1971
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
3465685
Patent number
3,465,685
Issue date
Sep 9, 1969
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Patents Applications
last 30 patents