Abstract: A flushing system for a catheter, in particular for a catheter of a catheter pump, comprising a supply line having a pump section, a discharge line having a pump section and a pump, wherein the diameter of the pump section of the discharge line is smaller than the diameter of the pump section of the supply conduit, the pump interacts with the pump section of the supply line for supplying flushing fluid to the catheter, and the pump interacts with the pump section of the discharge line for discharging flushing fluid from the catheter.

Abstract: Elliptical or oval shaped gears of a positive displacement gear pump are disclosed. The gears have specially designed teeth at the ends of the gears' major and minor diameter axes. For example the teeth at the ends regions of the major diameter axes include radially extending wipers or vanes that extend and run against the circular gear case bore walls to seal liquid slip paths at radial running clearance areas between the tips of the gear teeth and the case bores. The pump may also have moveable wearplates on one or both sides of the gears that may be loaded laterally to seal liquid slip paths at lateral running clearance areas between the side faces of the gears and the pump faceplate and backplate.

Abstract: A single flight screw, a single flight high pressure screw pump and the use of the pump in a compactor for compacting and dewatering debris commonly found in waste water. The bore, screw diameter and the flight spacing are constant and the compression force is mostly axial. The work is done at the very end of the screw.

Abstract: Elliptical or oval shaped gears of a positive displacement gear pump are disclosed. The gears have specially designed teeth at the ends of the gears' major and minor diameter axes. For example the teeth at the ends regions of the major diameter axes include radially extending wipers or vanes that extend and run against the circular gear case bore walls to seal liquid slip paths at radial running clearance areas between the tips of the gear teeth and the case bores. The pump may also have moveable wearplates on one or both sides of the gears that may be loaded laterally to seal liquid slip paths at lateral running clearance areas between the side faces of the gears and the pump faceplate and backplate.

Abstract: To provide an internal gear pump capable of preventing small vibrations due to pressure differences at the outlet port side of a crescent disposed between the outer rotor and the inner rotor, so that fatigue failure does not occur in the crescent over a long time period, whereby the durability can be increased. The internal gear pump includes a rotor unit, in which an inner rotor is disposed within an outer rotor on the inner peripheral side and a crescent is disposed in the gap between the inner rotor and the outer rotor, the rotor unit being housed in a pump casing. Outer cells are formed by the crescent and the outer rotor. Inner cells are formed by the crescent and the inner rotor. Linking of the outer cells and the outlet port, and linking of the inner cells 6 and the outlet port, start substantially simultaneously.

Abstract: The present invention provides an improved swash plate type variable capacity fluid machine which is fluid-tight, simple in structure, quiet in operation, and highly durable, yet without increasing its size, weight, and the amount of power loss. The swash plate type variable capacity fluid machine includes: a cone; a disk; an enclosure wall whose inner shpherical surface surrounds the outer circumference of the disk; and a partition plate movably fitted in a groove of the cone. The cone and the disk are arranged to confront each other on an abutment line, thereby defining a plurality of variable capacity compartments. Supplying/discharging holes are provided to communicate with the variable capacity compartments, supplying and discharging a fluid there from. A synchronous mechanism causes the cone and the disk to rotate about their center axis in synchronization.

Abstract: The rotary machine, for example an air pump, has two rotors and vanes carried by the rotors within a housing, to pump fluid between an inlet and an outlet on opposite sides of the housing. The vanes are guided by tracks, so that the vanes are withdrawn flush with the rotor surfaces at a contact line between the rotors. In one embodiment, ends of the vanes are carried in carriers by means of bearing blocks. The carriers rotate at an average speed equal to that of the rotors, to reduce the movement of the ends of the vanes. The mechanism can be employed in a single rotor machine.

Abstract: An apparatus for producing a homogeneous flexible layer of material such as butter or margarine, comprising an input portion for guiding blocks of said material into a central portion, in which two rotors 11, 12 are arranged in a horizontal plane, a central region 33 between said rotors 11, 12 lying beneath said input portion and are driven in opposite directions, each rotor being provided with a number of axial blades 22, 23 radially displaceable in slots and guided by guiding means at the ends thereof.

Abstract: A pair of counter-rotating rotors operate in communicating rotor chambers of a common rotor housing. The rotors are pocketed in their peripheries and alternating pockets of each rotor receive vane-piston rollers of the opposing rotor with the vane-piston rollers intermeshing during rotor rotation. The peripheral rotor pockets form secondary relatively high compression combustion chambers having a secondary fuel supply independent of the supply to a primary combustion space between the two rotors and adjacent eccentric wall portions of the rotor chambers. During engine operation, the vane-piston rollers constantly engage the chamber walls due to centrifugal force and are radially guided by central fixed cams. Four cycle piston engine operation is closely simulated and major virtues of rotary and reciprocating piston engine types are retained while major disadvantages of each engine type are eliminated in a hybrid engine.