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Patent Searching and Data


Matches 401 - 450 out of 1,704

Document Document Title
WO/1995/030087A1
An improved, rapid clean-out valve assembly (36) is provided which is especially adapted for use on a food pump (10) or similar device. The assembly (36) includes a stationary valve body (38) presenting a pair of inlets (44, 46) as well ...  
WO/1995/018304A1
The invention concerns a slide valve for a two-cylinder pump, in particular a truck-mounted concrete pump. The slide valve (20) has an essentially C-shaped swing pipe (16) which is connected at the upper end by a rotating joint to a disc...  
WO/1995/017603A1
A cassette (22A/B/C) serves in association with one or more peristaltic pumps to centralize pumping, valving, and pressure sensing functions. The cassette includes a housing (110) having first and second pump ports. A flexible tubing loo...  
WO/1995/014862A1
A reciprocating pump has a pump housing (1) in which there is formed a cylinder (3) having an inlet (9) and an outlet (10) and in which a piston (6) is mounted for revolving rotational movement about an axis (7). The piston (6) is arrang...  
WO/1995/012758A1
A central impeller (77) is sandwiched between fixed walls (19, 23) and is driven through a circular path of small radius, but is prevented from rotating by a ring-shaped shutter or slider (59) which surrounds and guides it. The shape of ...  
WO/1995/008860A1
An electrical powered linear actuator is provided. An elongated cylinder (55) formed of a magnetic material and having an internally threaded bore is rotatably supported relative to the housing assembly (50). Magnets (60) are mounted abo...  
WO/1995/003198A1
A hydraulic braking system has a skid control that works according to the feedback principle and a self-priming pump that sucks hydraulic fluid out of a hydraulic fluid container for controlling the drive slip. In order to improve the ca...  
WO/1995/003491A1
A process is disclosed for continuously conveying shear-sensitive fluids, in particular polymer lattices or plastic dispersions when sampling, processing and measuring samples. Also disclosed is a device for carrying out the process, as ...  
WO/1995/003490A1
A hydraulic actuator (10) which controls the operation of a cylinder valve having a valve seat (11), and a valve element (12) which is linearly reciprocable between open and closed positions with respect to valve seat (11), a valve seal ...  
WO/1995/002764A1
A pump system for producing high and exactly controllable pressure levels includes a piston pump which has a piston (32) connecting to a spindle shaft (22), a spindle nut (44) on said spindle shaft, a cylinder block (34) having a bore (3...  
WO/1994/022409A1
The invention relates to a bidirectional piston pump (2) controlling a working cylinder (1) or the like. Each end of the pump has two pipe fittings (7a, 7b; 8a, 8b) for the medium, and each pipe fitting has a unidirectional valve (10, 11...  
WO/1994/020157A1
Systems for performing peritoneal dialysis having an improved user interface functions and monitoring capabilities. In one respect, the systems discriminate between alarm conditions that require user intervention to correct and alarm con...  
WO/1994/018501A1
In order to convey thick matter and solids together and substantially continuously, the invention proposes that the thick matter be forced by a conveyor piston (4) of a piston pump (2) from a feed container (6) into a conveyor cylinder (...  
WO/1994/013488A1
The invention provides an ink jet printer provided with a maintenance station which is simple in construction and small-sized. A cap holder is provided with a suction port (28) communicating with a cap through a communication hole, a dis...  
WO/1994/005910A1
A cylinder and sleeve combination, such as those found in fluid control systems, having closely positioned moving elements that leach one or more substances upon sustained contact with the subject, reactive fluid. One embodiment comprise...  
WO/1994/004821A1
A tube switch for a double-cylinder sludge pump is provided including a swing pipe (202), a wearing ring (204) and an elastic member (206). The swing pipe (202) is adapted to swivel in front of a center plate (5) and includes an extensio...  
WO/1993/020864A1
An infusion pump for repetitive delivery of well defined amounts of medication, comprising a cylinder having a cylinder wall and an open and a closed end, a plunger (1) inserted through the open end of the cylinder, this plunger being ro...  
WO/1993/015316A1
A valveless metering pump includes a simultaneously reciprocating and rotating piston (46). The pump head (10) includes radially spaced coplanar ports (92, 94, 96) for drawing and dispensing fluids as the piston (46) rotates sequentially...  
WO/1993/004282A1
In a hydraulic control device for a viscous fluid pump with at least one feed cylinder (11) drivable by a hydraulic cylinder (12), the feed chamber (17) of which can be alternately connected via a hydraulically operable inlet valve (18) ...  
WO/1993/000574A1
A method and apparatus for calibrating a multiple port metering pump includes a graduated scale (152) mounted on the head (10) of the pump and an indicator (200) mounted on the body (12) of the pump, whereby the angular orientation of a ...  
WO/1992/016747A1
The dosage pump according to the invention comprises a cylinder (2), a piston (4) moving back and forth in it and openable and closable inlet (5) and outlet (6) opening in the piston-swept space (3). The opening and closing of the openin...  
WO/1992/014531A1
A method and an apparatus for distillation of a liquid near or above the critical point of the liquid, wherein the liquid is fed to a separation zone (32) in which a temperature profile rising from a liquid inlet to a vapour outlet is pr...  
WO/1992/012794A1
A piston burette is disclosed for dosing and measuring a dosed volume of liquid with precision. For the actual pumping process, a piston pump with rotary piston (6) is used, which opens the inlet (3) and closes the outlet (2) with its po...  
WO/1992/012345A1
A solution pumping system includes a compressible pump cassette (14) having front (16) and rear (18) body members, and an elastomeric diaphragm (20) positioned therebetween. The front and rear body members are joined to each other for li...  
WO/1992/007190A1
Apparatus (20) for successively supplying substantially equal portions of a flowable comminuted product such as sausage from a source thereof to a delivery zone is disclosed wherein dual product portioning chambers (80, 88, 82, 90) are p...  
WO/1992/002730A1
A free-piston engine has one or more pistons (1) which are preferably rigidly connected to hydraulic pistons (2) and which move freely in cylinders along the longitudinal axis. The rear face of the piston (1) is used to convey the combus...  
WO/1992/001159A1
A feeding reservoir for thick matter, two-cylinder pumps has a switching pipe designed as a swing pipe (34). The front wall (12) of the feeding reservoir (10) has two pump-side openings (22) that lead to the feeding cylinders (26), where...  
WO/1991/005163A1
Displacement control of a multi-piston fluid-working machine (10) is achieved by real time control of electrically selectable poppet valves (13, 15) in one or more of the cylinders (11). Microprocessor control (20) permits desired variab...  
WO/1991/004414A1
The invention concerns a radial piston pump with a multiplicity of radially disposed cylinder/pump assemblies with foot and head valves, the pistons being controlled by a cam plate which rotates eccentrically with respect to a housing ho...  
WO/1991/000219A2
A pump specially designed for the accurate repeatable dispensing of small to medium quantities of liquid. The liquid dispensing pump includes a pump body having an axially oriented, valve spool receiving internal chamber, a generally cyl...  
WO1991000219A1
A pump specially designed for the accurate repeatable dispensing of small to medium quantities of liquid. The liquid dispensing pump includes a pump body having an axially oriented, valve spool receiving internal chamber, a generally cyl...  
WO/1990/014578A1
Fluidic material is fed into a product portioning chamber (66) forcing a piston (62) from a first position to a second position. The piston is then driven by a pneumatic fluid back to the first position so as to deliver the portioned flu...  
WO/1990/006444A1
The invention concerns a sequence-control unit for a twin-cylinder thick matter pump with two delivery cylinders (1, 1') discharging through front-located openings (2, 2') into a hopper, and a hydraulically operated pipe switch (3) which...  
WO/1990/003519A1
Displacement control of a multi-piston fluid pump (30) is achieved by real time control of electrically selectable inlet poppet valves (36) in one or more of the cylinders (30). Microprocessor (40) control permits desired variable output...  
WO/1990/001117A1
A pipe shunt for a two-cylinder pump for viscous fluids contains a swivelling pipe (2) with a turned groove (6, 8) in the form of a right-angled step at its front end which receives an elastic rubber ring (3). The radial outer surface of...  
WO/1989/009339A1
A multi-cylinder piston pump of rotary slide valve design for conveying free flowing materials, in particular concrete, comprises a rotary slide valve (33, 36) connected to the pistons (48, 49) and their cylinders (44, 45) with which it ...  
WO/1989/003479A1
A compact twin piston pump (20) is provided which includes quick detach yoke and clevis assemblies (108, 124, 110, 126) connecting the reciprocable pistons (100, 102) with their associated hydraulic cylinders (116, 118), thereby permitti...  
WO/1988/008084A1
An axial control valve for the pumped concentrate of a reverse-osmosis separating plant has a rotary disk valve (4, 5) driven by the pump shaft (16) which is supported on the side nearest the drive on bearings (17) (bearing space) and wh...  
WO/1987/004497A1
A submersible positive displacement piston pump (10) includes a cylinder (12) for insertion within a body of liquid, the cylinder including a working end (14) and an opposite end (15), an inlet port (18), an outlet port (20) and a workin...  
WO/1987/000248A1
A positive displacement piston pump (110) includes a cylinder (112) having a working end (114), an inlet port (118), an outlet port (120) and a working chamber bounded by the outlet port and the working end; a piston (128) rotatably and ...  
WO/1986/007117A1
A dosing device comprising a dosing chamber having a plunge (19) arranged therein for reciprocating movement and an inlet (22) and an outlet (20) for the product to be volume dosed. The plunge is provided with an axial extension (21) whi...  
WO/1986/006794A1
The piston (4) of the pump comprises at its free end a flattening (7) of which the length corresponds to at least the piston stroke and of which the depth extends down to one third of its cross-section. The piston effects, during the str...  
WO/1986/002702A1
In order to achieve the simplest possible operation and construction of a piston pump (15), the fluid is fed to the suction side (6) of the pump by means of a generally-known flow-pump (2) in an amount which at least corresponds to the m...  
WO/1984/002557A1
An object of this invention is to provide a fluid intensifier which is self priming and which can operate from erratic fluid sources such that it can be operated reliably and without supervision for long period of times. The fluid intens...  
WO/1983/001816A1
A positive displacement machine, particularly an internal combustion engine, comprises an oscillating piston connected to a piston pump. The cylinder of the pump is connected through valves to a pressure accumulator and to a substantiall...  
WO/1983/001819A1
Hydraulic control system (12) comprising: a housing (14), a cam shaft (32) mounted in the housing for both linear translational and rotational movement, a plurality of pumping units (30) operated by rotational motion of the cam shaft, a ...  
WO/1983/001088A1
A piston machine, most particularly an internal-combustion machine, in which the cylinder wall performs a rotating motion round its own axis. Apertures on the cylinder wall allow it to act as a rotating slide valve, so that no valve syst...  
WO/1980/001934A1
A small, accurate, reliable and economical pump which is particularly useful in intravenous (IV) feeding includes a disposable pump chamber (10) and a pump housing (12). The disposable pump chamber (10) has an inlet (14), an outlet (16),...  
WO/1980/001594A1
The thick liquid pumps, in particular concrete pump comprise two cylinders leading to a chamber (1) and which suck alternately the product to be pumped from the chamber (1) and discharge the product into a discharge conduit through an S-...  
JP2019065757A
To further enhance a configuration for preventing pump stop caused by deposition or fixture even under every use condition.A plunger pump comprises: a cylinder including a cylinder chamber insides; a plunger which is disposed so as to fr...  

Matches 401 - 450 out of 1,704