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| Number | Title | Issue Date |
| 7281644 | Valve mechanism A valve mechanism for a pressure chamber, particularly a pumping device, includes a tappet and a valve disk, in which the valve disk is attached to the tappet. The valve disk is provided on the tappet so as to be movable in relative manner between a starting and an ... | 10/16/2007 |
| 7048006 | Material feeding container for two-cylinder thick matter pumps The invention relates to a material feeding container for two-cylinder thick matter pumps. The material feeding container (24) has a material supply opening (30) oriented upward, two feed cylinder openings (34) arranged in the front wall (36 | 05/23/2006 |
| 6821097 | Concrete pump with S-tube valve assembly with wear ring-spring-retainer ring construction A concrete pump includes a hopper having a plate with a pair of openings and an S-tube valve assembly which is movable between the two openings. The valve assembly includes an S-tube which is connected to a mounting plate which is pivotally mounted on the hopper. A ... | 11/23/2004 |
| 6494687 | Metering device for viscous liquids with a plurality of selectively engaged metering pumps, metering channels, supply channels, and bypass channels for flush cleaning A metering device for liquids, especially for viscous liquids, preferably liquids which are to be metered under sterile conditions, with a plurality of metering pumps which can be simultaneously actuated. To achieve an optimized mode of operation, it is p... | 12/17/2002 |
| 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 |
| 6443718 | Shuttle valve for concrete pump A shuttle valve for use in a pumping apparatus for pumping concrete or the like. The valve uses belleville springs to hold a wear ring against the concrete hopper, thereby creating a seal.... | 09/03/2002 |
| 6350112 | Dual-direction pump for a bike An air pump has a positioning seat provided to have two mouths each with an inner thread formed on an inner face thereof and an outer thread formed on an outer face thereof and a nozzle formed to adjust to an inlet of a tire; and two pump barrels each cor... | 02/26/2002 |
| 5993172 | Method and apparatus for pressure processing a pumpable substance An improved method and apparatus for pressure processing a pumpable substance are shown and described. In a preferred embodiment, a valve is coupled to a source of a pumpable substance and a pressure vessel, the valve being movable to a first, second and ... | 11/30/1999 |
| 5571002 | Plunger pump system with shuttle valve A plunger pump system including a plunger pump, and a shuttle valve connected to the plunger pump having a valve body reciprocally fitted in a hollow portion formed in a valve casing to divide the hollow portion into a liquid supply side chamber and a liq... | 11/05/1996 |
| 5454698 | Plunger pump system with shuttle valve A plunger pump system including a plunger pump, and a shuttle valve connected to the plunger pump having a valve body reciprocally fitted in a hollow portion formed in a valve casing to divide the hollow portion into a liquid supply side chamber and a liq... | 10/03/1995 |
| 4974754 | Metering apparatus for metering and delivering fluid or pasty substances and use of said metering apparatus A metering apparatus has a metering chamber which has at least one boundary surface in the form of a flexible diaphragm. The diaphragm is operatively connected to an actuating device so that the volume of the chamber for metering and deliveirng the substa... | 12/04/1990 |
| 4907950 | Variable positive fluid displacement system A fluid pump has two pairs of rectangular oppositely-disposed pistons. The pistons of each pair travel simultaneously in opposite directions at the same speed and over the same distance. Valving is provided by a reciprocating port plate, in face-to-face r... | 03/13/1990 |
| 4854838 | Hydraulic pump gate apparatus An improved, hydraulically controlled pump for coarse, viscous material such as, but not limited to, concrete, and a gate mechanism for the pump.... | 08/08/1989 |
| 4755113 | Sleeve pump A compact sleeve pump is provided that is particularly adaptable to fluid dispensing systems having multiple pump groupings. The sleeve pump includes a generally cylindrical valving spool and generally cylindrical dispensing piston, shiftably received wit... | 07/05/1988 |
| 4605360 | Reversible expansible chamber hydraulic pump A reversible, positive displacement, expansible chamber hydraulic pump with only three moving parts. Intended for manual operation where the creation of high fluid pressures is desired, the pump consists of a rotating input shaft with a single eccentric c... | 08/12/1986 |
| 4482301 | Valve controlled pump driven by a motor When a valve-controlled pump is to produce either vacuum or pressure at a pump outlet 9 as a function of its direction of rotation it is necessary that a 3/2-way valve be switched as a function of the direction of rotation of the motor of the pump. In acc... | 11/13/1984 |
| 4479758 | Piston filler A piston filler for metering two fluids intermittently comprising a cylinder having a first and a second inlet conduit and an outlet conduit, means for closing the communication between the cylinder and the first inlet conduit and between the cylinder and... | 10/30/1984 |
| 4462768 | Air compressor The described air compressor has an annular piston received within a cylinder for reciprocal movement to drive pressurized air on both piston strokes to an outlet which is arranged in line with the air inlet and driving power source. A shuttle valve alter... | 07/31/1984 |
| 4424012 | In-line fluid pump and shuttle valve therefor An annular piston is received within a suitably dimensioned cylinder and reciprocally driven to pump fluid on both piston strokes to a fluid carrying line with which the pump is arranged in an in-line relationship. A centrally located shuttle-valve altern... | 01/03/1984 |
| 4411601 | Pump for metering two distinct fluids A pump for metering two fluids comprising a cylinder having a first and second inlet conduit and an outlet conduit, means for closing the communication between the cylinder and the first inlet conduit and between the cylinder and the outlet conduit altern... | 10/25/1983 |
| 4360323 | Proportioning pumping system for dialysis machines A compact and highly reliable proportioning pumping system for supplying a precise and controllable mixture of concentrate and water in a kidney dialysis machine comprises a central body and a pair of oppositely mounted pivotable linkages coupled to the b... | 11/23/1982 |
| 4341329 | Dispensing apparatus for aseptic measurement and filling of a fluid product A dispensing apparatus for aseptic measurement and filling of a fluid product is proposed, which, particularly as a result of the simple embodiment of a control slide valve, is especially suitable for the development of a multiple dispensing apparatus. A ... | 07/27/1982 |
| 4303376 | Flow metering cassette and controller A cassette and controller for accurately controlling fluid flow through an administration set while maintaining a closed fluid system. Inlet and outlet conduits are defined in a body of the cassette and inlet and outlet valves control fluid flow through t... | 12/01/1981 |
| 4192361 | Apparatus for filling capsules and the like An apparatus for dispensing liquid or pasty substances to gelatin capsules and the like, in particular for dispensing pharmaceutical products thereto. In order to maintain the substance to be dispensed in relative motion to prevent deleterious thickening,... | 03/11/1980 |
| 4058240 | Automatic drain for compressed air systems An automatic drain system for compressed air systems, air dryers, aftercoolers, separators and the like, which eliminates the loss of compressed air and is not clogged by sediment in the accumulated liquid or slurry.... | 11/15/1977 |
| 4042152 | Diluting apparatus A diluting apparatus or pump having first and second chambers coaxially formed in a single pivotally mounted block. A first piston is reciprocally disposed in the first chamber and a second piston is coaxially mounted on the first piston and reciprocally ... | 08/16/1977 |
| 4037996 | Volumetric pump Volumetric pump with a cylinder and a piston reciprocably driven therein, comprising an inlet at one end of the cylinder, ports at each end of the cylinder connected by a passage and a valve controlling the flow in said passage, and a closable outlet conn... | 07/26/1977 |
