Patents
Sitemap › F04 - Positive-displacement machines for liquids; Pumps for liquids or elastic fluids › F04B - Positive-displacement machines for liquids; Pumps › F04B 9 - Piston machines or pumps characterised by the driving or driven means to or from their working members
Patents for F04B 9 - Piston machines or pumps characterised by the driving or driven means to or from their working members (9,236)
04/1982
04/28/1982EP0050296A1 A pulsation-free volumetric pump
04/27/1982US4326837 Pumping apparatus using a stepping motor
04/07/1982EP0048737A1 Apparatus for displacing fluid in tubing.
03/1982
03/30/1982US4322201 IV Pump with back pressure control
03/24/1982EP0048139A1 Pumping arrangements
03/23/1982US4321016 Apparatus for continuous slurry displacement transfer
03/16/1982US4319570 Tracheal suction pump designed primarily for aspiration purposes
03/02/1982US4317531 Accumulator type manual atomizer
02/1982
02/18/1982WO1982000503A1 Double acting hydro-pneumatic pump
02/18/1982WO1982000502A1 A hydro-pneumatic pumping installation
02/18/1982WO1982000501A1 Hydro-pneumatic pumping installation
02/17/1982EP0046046A1 A power conversion unit
02/16/1982US4315582 Universal sequential dispensing pump system free of external check valves and having venting capability
02/16/1982CA1118365A1 Reverse osmosis method and apparatus
02/09/1982US4314447 Refrigerant motor
01/1982
01/26/1982CA1117080A1 Liquid spraying device
01/20/1982EP0043947A1 Power steering pump
01/19/1982US4311437 Radial piston pump
01/05/1982US4309156 Fluid activated pump having variable discharge
12/1981
12/15/1981CA1114338A1 Metering apparatus
12/09/1981EP0041062A1 Apparatus generating a reciprocating motion
12/08/1981US4304531 High pressure piston pumps
12/08/1981US4304527 System for pumping an abrasive or corrosive fluid
12/08/1981US4304173 Thermal barrel motor
12/01/1981CA1113305A1 Adjustable metering pump
11/1981
11/26/1981WO1981003361A1 Apparatus for controlling the flow of a fluid
11/24/1981US4301688 Pump operating mechanisms
11/18/1981EP0040098A1 A district hot water supply system
10/1981
10/27/1981US4297087 Apparatus for pumping fluid from a well through a tubing string
10/20/1981US4295801 Fluid-powered submersible sampling pump
10/06/1981CA1110137A1 Intravenous liquid pumping system and method
10/01/1981WO1981002769A1 Pneumohydropumping installation
10/01/1981WO1981002678A1 Method and apparatus for displacing fluid in tubing
09/1981
09/29/1981US4291588 Transmission
09/29/1981CA1109837A1 Apparatus and method for dispensing corrosive liquids
09/21/1981EP0024431A4 Nonpulsating intravenous pump and disposable pump chamber.
09/15/1981US4289458 Foot pumps
09/03/1981WO1981002448A1 Hydro-pneumatic installation
09/01/1981US4286929 Dual pressure gas motor, and method of operation
09/01/1981US4286927 Hydraulic power transfer unit
09/01/1981US4286736 Liquid Dispenser
09/01/1981CA1108007A1 Pumps
08/1981
08/25/1981CA1107698A1 Hand operated sprayer with automatic contaner vent
08/19/1981EP0034029A2 A pump for hydraulic fluid
08/19/1981EP0034028A2 Improvements in hydraulically-operated anti-skid braking systems for vehicles
08/19/1981EP0033746A1 Drive mechanism for pump
08/11/1981CA1106729A1 Apparatus for producing mechanical kinetic energy from falling water
08/05/1981EP0033157A2 Method and apparatus for making and dispensing carbonated water
07/1981
07/28/1981US4280326 Generators of impulses
07/15/1981EP0031930A1 Accumulative pressure pump
07/14/1981US4278189 Accumulative pressure pump
07/07/1981US4277228 Radial piston pump
07/07/1981US4277226 IV Pump with empty supply reservoir and occlusion detector
07/07/1981US4277001 Invertible miniature atomizer of manual type
06/1981
06/30/1981US4276003 Reciprocating piston pump system with screw drive
06/30/1981US4276001 Fluid pump assembly
06/30/1981CA1103865A1 Detachable pump handle for liquid fuel appliances
06/30/1981CA1103854A1 Metering pump
06/23/1981US4274561 Dispenser preferably driven by compressed-air for continuously dispensing a substance from a container, and in particular a viscous or paste-like material
06/23/1981US4274560 Atomizing pump dispenser
06/23/1981CA1103627A1 Dispenser preferably driven by compressed-air for continuously dispensing a substance from a container, and in particular a viscous or paste-like material
06/16/1981US4273516 Pumps for fluids
06/16/1981US4273261 Metering apparatus
06/16/1981CA1103094A1 Foot pumps
06/09/1981CA1102760A1 Filling machine to handle liquid products
05/1981
05/28/1981WO1981001447A1 Apparatus generating a reciprocating motion
05/12/1981CA1100813A1 Positive displacement constant flow pump
05/05/1981US4265375 Safety dispensing apparatus for flammable liquids
05/05/1981CA1100451A1 Universal body variable shroud dispenser
04/1981
04/30/1981WO1981001176A1 Single acting piston pump
04/29/1981EP0027717A1 Single acting piston pump
04/29/1981EP0027654A1 Concrete pump with hydraulically relieved slide valve
04/21/1981US4262823 Atomizing pump
04/21/1981CA1099674A1 Manually operated liquid dispensing device
04/14/1981US4261688 Hydraulic pressure converters
04/07/1981US4260342 Dual-piston reciprocating pump assembly
04/07/1981US4260338 Multicylinder pump for viscous liquids
04/07/1981CA1098765A1 Dual-piston reciprocating pump assembly
03/1981
03/31/1981CA1098373A1 Foot pumps
03/25/1981EP0025562A1 Piston-displacement pump, in particular metering pump
03/11/1981EP0024431A1 Nonpulsating intravenous pump and disposable pump chamber.
03/03/1981US4253804 Double action hand pump structure
03/03/1981CA1096824A1 Dispensing device
02/1981
02/25/1981EP0024084A1 Apparatus and method for dispensing corrosive liquids
02/05/1981WO1981000288A1 Drive mechanism for pump
01/1981
01/27/1981US4247264 Air driven diaphragm pump
01/07/1981EP0021315A1 Piston machine, particularly piston pump
01/07/1981EP0020436A1 Pumping apparatus for pumping liquids such as slurrys
12/1980
12/30/1980US4242060 Foot pumps
12/30/1980US4242057 Tandem long stroke reciprocating mud pump assembly
12/24/1980WO1980002869A1 Circulation pump for liquid and/or gas medium
12/23/1980US4240326 Hydraulic vibration exciter and method of cooling thereof
12/10/1980EP0020309A1 Liquid additive metering device
12/02/1980US4236880 Nonpulsating IV pump and disposable pump chamber
11/1980
11/25/1980US4235130 Adjustable stroke piston and crankshaft assembly
11/18/1980US4234295 Subsurface hydraulic pump using high pressure accumulator
11/18/1980US4234294 Deep well hydraulic pump system using high pressure accumulator
11/12/1980EP0018855A1 Variable pressure and displacement reciprocating pump
11/12/1980EP0018648A1 A fluid pump for location within a liquid reservoir
11/04/1980US4231716 Mechanical lubricating pump
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