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| Number | Title | Issue Date |
| 8123504 | Piston pump for thick materials In a multi cylinder thick materials pump for feeding concrete in particular, whose at least two feeding cylinders feed the thick material from a pre filling container into a feed line, and a shift valve for alternatively connecting the feeding cylinders, having a fe... | 02/28/2012 |
| 7614857 | Medical pump device The invention relates to a medical pump device comprising a rotary valve (13) having preferably only one rectilinear channel (20) which respectively connects the inlet (4) and the outlet (7) of the pump device, or connects the inlet to a ... | 11/10/2009 |
| 7217105 | Integrated pump and wash pump A pump apparatus is provided which comprises a first displacement pump and a ceramic valve construction formed of a ceramic rotor, a ceramic stator having flat surfaces which are positioned in sealing relationship and a second displacement pump having check valves. ... | 05/15/2007 |
| 7080975 | Integrated pump and ceramic valve A pump apparatus is provided which comprises a displacement pump and a ceramic valve construction formed of a ceramic rotor and a ceramic stator having flat surfaces which are positioned in sealing relationship. The displacement pump comprises a reciprocating piston... | 07/25/2006 |
| 7004407 | Uniform metering system for spray applications A metering system includes a pumping device having one or more cylinders, each cylinder having a piston therein that is moved by an automated drive system to produce uniform or proportional flow to a single spray nozzle or a plurality of nozzles. The cylinders are m... | 02/28/2006 |
| 6857861 | Ring for concrete pump A pivot pipe for a two-cylinder thick material sludge pump is designed to reduce the rate of wear of the sealing surfaces and flow bores of the pivot pipe and cooperating outlets on the two pump cylinders. As the pivot pipe oscillates from one pump cylinder to the o... | 02/22/2005 |
| 6776558 | Method and arrangement for concreting vertical shafts A method and an arrangement for concretizing vertical shafts having a depth of e.g. 500 m or more. The concrete is conveyed to a low-lying application site (20) in the shaft by a concrete column that is situated in a downpipe (30). Delivery of concrete... | 08/17/2004 |
| 6514569 | Variable volume positive displacement dispensing system and method Aspects of the present invention are directed to methods and apparatus for dispensing material onto substrates. A dispensing system is provided for dispensing a metered quantity of dispensing material onto a substrate. The dispensing system includes a dis... | 02/04/2003 |
| 6488477 | Material feed container, especially for thick material pumps A material feed container (20), especially for thick material pumps, comprising a lower container component (38) that is upwardly open and a motor-driven agitator (44) that extends through the lower container component (38) in-between two side walls (50).... | 12/03/2002 |
| 6450779 | Two-cylinder thick matter pump A two-cylinder thick-matter pump for continuous delivery of thick matter is characterized in that a reversing valve (5) has a diverter housing (8, 8') with at least four openings (a-b), the diverter (6, 6') disposed in the diverter housing (8, 8') is swiv... | 09/17/2002 |
| 6322337 | Liquid dispensing systems and methods The present invention provides systems and methods of dispensing liquids. In one embodiment, the system includes a pump with a removable pump module with at least one displacement piston and at least one piston valve. A motor and base assembly provide the... | 11/27/2001 |
| 6302662 | Liquid dispensing systems and methods The present invention provides systems and methods of dispensing liquids. In one embodiment, the system includes a pump with a removable pump module with at least one displacement piston and at least one piston valve. A motor and base assembly provides th... | 10/16/2001 |
| 5993181 | Process and device for feeding concrete or other thick materials A apparatus for feeding concrete and other thick materials from a container into a feeding pipe by two feeding cylinders which are alternately connectable by a switching device to the container or the feeding pipe. The feeding pistons of the feeding cylin... | 11/30/1999 |
| 5957675 | Thick matter pump with a cleaning cartridge and blocking slide A thick matter pump, especially a concrete pump, including a material feed container, two conveyor cylinders opening at the front into the inside of the material feed container, a swivelling pipe, one end of which alternately in pulses communicates with t... | 09/28/1999 |
| 5769615 | Single-piston fluid displacement pump A single-piston, multimode fluid displacement pump comprising an elongated chamber, a piston reciprocally mounted within the chamber, a driving mechanism axially aligned with the chamber and piston for accurately positioning the piston within the chamber ... | 06/23/1998 |
| 5718570 | Rotary control valve for a piston pump A reciprocating piston pump provides pulsation free delivery of liquid. It is suitable for use in compact environments or for the delivery of small amounts of liquid, as in chromatographic analysis devices. The pump includes two pistons with pumping chamb... | 02/17/1998 |
| 5478217 | Reciprocating pump for pumping viscous materials A positive displacement pump is disclosed having a pump body, a cylinder member rotatably accommodated within the pump body and a piston member within the cylinder member. At least a portion of the cylinder member is rotatable about the cylinder axis in s... | 12/26/1995 |
| 5466132 | Pump having a rotary distributor A rotary plug 1 has recesses 5 debouching on its side face 12 which are in communication with the inlet 6 and recesses 5 debouching on its side face 13 which are in communication with the outlet 7. These recesses 5 pass across a port 4 which permits passa... | 11/14/1995 |
| 5431549 | Bidirectional aspetic volume filler The invention provides a series of bi-directional aseptic volume filler cylinders, that are able to provide measured volume fillers as the piston is driven in both directions by providing an aseptic disk value which is able to direct material in the desir... | 07/11/1995 |
| 5429482 | Reciprocatory piston type compressor A reciprocatory piston type compressor having a compressor body in which a low pressure suction chamber for the refrigerant before compression, a discharge chamber for the refrigerant after compression, and a plurality of axial cylinder bores receiving a ... | 07/04/1995 |
| 5380174 | Pump for thick matter having delivery cylinders, in particular a two-cylinder concrete pump In a pump for thick matter with delivery cylinders (1, 2), in particular a two-cylinder concrete pump, which in order to control the flow of thick matter, incorporates a distributing regulator (11) that is connected permanently at an outlet opening (8) wi... | 01/10/1995 |
| 5330331 | Metering pump for highly viscous fillings A metering pump for highly viscous fillings has a crankshaft-type drive for a back-and-forth movement of a piston (1) in a cylinder (2) and a drive for a forward-and-backward rotational movement of a rotary slide valve (4) derived from this. The rotary sl... | 07/19/1994 |
| 5316453 | Slurry pump with discharge cylinders, especially two-cylinder concrete pump A slurry pump for mixing concrete includes a charge funnel, a pair of discharge cylinders, and a discharge line operable with each other to form a slurry flow control. A control valve has an exit port connected with the discharge line and an entrance port... | 05/31/1994 |
| 5304046 | Fluid transport device A fluid transport device for compressing or pumping a work fluid comprises a rotating coupling having an off-center first gear, a fixed internal second gear of twice the pitch diameter of the first gear, and a housing having a diametrical channel with a s... | 04/19/1994 |
| 5302094 | Tube switch for a double-cylinder sludge pump A tube switch for a double-cylinder sludge pump is provided including a swing pipe, a wearing ring and an elastic member. The swing pipe is adapted to swivel in front of a center plate and includes an extension portion having an inner surface. The wearing... | 04/12/1994 |
| 5281113 | Thick materials pump with paired, preferably parallel feed cylinders which alternatingly deliver and intake In a thick materials pump with paired, preferably parallel, feed cylinders, which alternatingly deliver and intake, and with a slide, which pivots on the axis of a central channel and, for each pair of feed cylinders, connects, by way of a branch channel,... | 01/25/1994 |
| 5277558 | Constant output pressure pump A conveyance pump having a substantially constant output pressure. The pump includes a chamber having a circular periphery. A vane is mounted within the pump chamber for oscillation through an arc and a valve chamber includes opening to each boundary of t... | 01/11/1994 |
| 5190449 | Material feed tank for sludge pumps A material-feeding container is disclosed for two-cylinder thick-matter pumps having feeding cylinders that open into the container. Inside the container is arranged a switchable guide-tube linked to the feeding line and alternatively movable between the ... | 03/02/1993 |
| 5141414 | Piston pump for easily damaged products An improved pumping device for delicate or easily damaged products is provided with a hopper, or other system for holding the products, and at least one, and preferably two, synchronized piston pumps positioned proximate to the bottom of the hopper. The p... | 08/25/1992 |
| 5069366 | Aseptic volumetric packaging apparatus A packaging apparatus for aseptic volumetric packaging has a fixed means for forming a flow of sterile air to the apparatus, a feed member, at least one pumping member which is movable relative to the flow of sterile air, at least one filler spout and at ... | 12/03/1991 |
| 5064360 | Surge chamber for swing valve grout pumps Improved apparatus (10) for pumping of a viscous, flowable material which minimizes the problem of large pressure fluctuations in downstream conduits (16). The apparatus (10) preferably includes a twin piston cement pump (12) and a flexible material deliv... | 11/12/1991 |
| 5061158 | Multi-cylinder piston pump 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 piston (48, 49) and their cylinders (44, 45) with which it pivots. The feeder ... | 10/29/1991 |
| 5037275 | Pipe junction switch for two-cylinder thick-material pump A pipe switch for two-cylinder thick-material sludge pumps comprises a pivot pipe (1) pivotable in front of a wear plate (8). A wear ring (22) is disposed axially slidable to a limited amount against the spring force of a rubber-elastic sealing ring (3) o... | 08/06/1991 |
| 4863317 | Particulate material transportation Method and apparatus for transporting particulate material through a pipeline. The particles have a size distribution which provides a solids density of at least 85%. The particular have a maximum size of 20% of the bore.... | 09/05/1989 |
| 4759695 | Pumping unit for the filling of container in packaging machines A pumping unit for the filling of containers in packaging machines, in particular of foodstuffs with fluid behavior with the presence of suspended particles, which allows reliable operation under aseptic conditions, and which is easily cleanable. The coni... | 07/26/1988 |
| 4730545 | Axial piston machine having a plurality of mechanically actuated rotary valves An axial piston device with a plurality of mechanically actuated, rotory valves having their front faces sealing for the control of flows of fluid is suggested for the connection of ports of its housing to ingoing and outgoing passages of a combustion eng... | 03/15/1988 |
| 4661049 | Metering pump A metering pump including adjacent valve and pump chambers, the valve chamber having inlet and outlet connections and a valve plug angularly shiftable in the valve chamber to communicate said connections with opposite sides of the plug upon angular shifti... | 04/28/1987 |
| 4653990 | Positive double-piston displacement pump conveying pasteous material In positive displacement pumps using double pistons for the alternating supply of pasteous material from two supply cylinders through a pivotable feed tube arranged in a feed chamber spaced at a radial distance from a controllably positionable shaft, the ... | 03/31/1987 |
| 4632648 | Grease pumps A high pressure low volume grease pump is provided having a pump and a surrounding distributor adapted for sequentially distributing grease to a plurality of outlets and a reservoir delivering grease to the pump and receiving grease from any outlet not co... | 12/30/1986 |
| 4614483 | Device for sealing a concrete pump The invention relates to a device for sealing in the zone of contact between the mouths of alternately charging and discharging delivery cylinders of a concrete pump and a swinging pipe that is alternately movable to alignment in front of the cylinder tha... | 09/30/1986 |
