Abstract: A rotary fluid pressure device is disclosed comprising a housing having fluid inlet and outlet means and enclosing a gerotor having an internally toothed member and a coacting externally toothed member having a less number of teeth than the internally toothed member and having its axis positioned eccentrically relative to the axis of the internally toothed member. A wobble stick in the housing has a first end connected to the axial drive shaft and a second end connected to the gerotor member having the orbital movement. The housing has one set of passageways communicating at all times with the expanding and contracting gerotor cells. The gerotor member having orbital movement is, in addition to its usual function, a valve with two travel passageways, one travel passageway coaxially surrounding the other passageway.

Abstract: A central body connects a driving motor and a pump driven by the driving motor through a shaft and a coupling. The hollow central body surrounds the coupling, connected on one side to the driving motor and connected on the other side to the pump. A fan is arranged in the central body and is connected with an inlet and an outlet. The central body has a heat exchanger through which the outlet from the fan is conducted. To further develop and improve this apparatus, a pressure medium tank is mounted in the central body and surrounds the driving shaft at some distance. The pump is connected with the pressure medium tank through its suction connector. The inlet to the fan is provided on the side of the driving motor.

Abstract: A discharge pump for expelling fluid from a container comprising a pump chamber, aligned plungers disposed in said pump chamber movable in reciprocation therein and in unison and relative to each other to alternately trap a charge of fluid therebetween, isolate the trapped charge from the container and discharge the trapped charge from the container.

Abstract: Self-venting balloon dilatation catheter having a flexible tubular member with first and second lumens extending therethrough. An inflatable balloon is carried by the distal extremity of the tubular member in such a manner so that the first lumen extends through the balloon and is out of communication with the interior of the balloon and the second lumen is in communication with the interior of the balloon. A venting device is disposed between the balloon and the tubular member for venting air from the interior of the balloon but inhibiting the escape of liquid from the balloon.

Abstract: In a booster type high-pressure container including an outer cylinder associated with upper and lower lids and an inner cylinder fitted in the outer cylinder with a gap clearance retained therebetween, a booster chamber is provided between a piston disposed within the inner cylinder at its bottom portion and the lower lid of the outer cylinder, a boosting liquid medium is injected into the booster chamber for pushing up the inner cylinder jointly with the piston to boost the pressure within the inner cylinder, and the gap clearance communicates with the booster chamber.

Abstract: A pump for heating high viscosity oil and elevating it to a ground level from a subterranean level. The pump, which is preferrably of the type which produces and is operated by sonic pressure waves of special character, includes a ground level generator for producing pump operating forces that are transmitted to the subterranean level for reciprocally operating a subterranean heating and oil elevating unit which has a special magnetic piston reciprocal in a non-permanently magnetizable housing for generating heat and further has a reciprocal operating mechanism for intaking the heated oil and elevating it to the ground level.

Abstract: A dual pump is disclosed in which a single valve controls flow of power fluid to the pump piston. Cams on the pistons and push rods on the valve interact to control the valve timing.

Abstract: A slinger for a submersible electric pump protects a motor shaft bearing as well as a shaft seal. The slinger is provided with four, inclined, curved projections or vanes which are operable to propel sand or other potentially abrasive, grit-like contaminants away from an area adjacent the shaft seal. A pair of outlet slots disposed horizontally adjacent a lowermost portion of the slinger cooperates with the vanes to enable passage of the contaminants to an area external of the pump, such that the contaminants do not accumulate within the pump itself and the likelihood that the contaminants will enter the first pump stage is significantly reduced. Each of the vanes has a face inclined slightly relative to the frustoconical outer surface of the slinger, and each face terminates in a curved leading edge and a curved trailing edge. The vanes direct the contaminants toward the lowermost portion of the slinger where maximum outward thrust is developed.

Abstract: A rate meter for use with an IV fluid administration system having a vertical transparent drip chamber, the rate meter having an elongated housing having a notch therein for receiving the drip chamber, and a spring bias moveable portion which engages the drip chamber so that the housing is held to the drip chamber in a horizontal manner, the housing having two light emitters positioned on one side of the drip chamber and a photodetector on the other side, the light path between the light emitters and the photodetector being affected by passages of drops of fluid through the drip chamber, circuitry for computing a volumetric flow rate based on the frequency of detected drops, an indicator for displaying the detected flow rate and a self-contained battery. The two light emitters are arranged to provide equal light intensity on the photodetector.

Abstract: A sealed rotary compressor is provided which includes separate pump and gear chambers. Disposed within the pump chamber is a set of rotors operatively associated with a set of gears rotatably mounted within the gear chamber. A substantially pressure differential exists between the two chambers. Rotational power is applied directly to the rotors through a static seal rather than through the gears which are utilized primarily to transmit the dynamic load. The pump chamber is defined by two end plates with a surrounding thin-walled housing. Within the pump chamber are interior thin wall members with the rotary members disposed therebetween and defining inlet and outlet pockets operatively associated with a pump housing inlet and outlet means.

Abstract: A vehicle, in particular an agricultural one, for instance a combine harvester, has two axles (1, 2) drivable from two hydraulic motors (3, 4) switched in parallel, of which the one, non-steerable axle (1) is constantly drivable and the drive of the second steerable axle (2) may be connected or disconnected by means of clutch (11). In order to achieve a compact, stable and vibration-free auxiliary drive of the second steerable axle (2), the clutch (11), a planetary transmission (12) and a bevel drive pinion of an angle transmission (13) are arranged coaxially one behind the other between the associated hydraulic motor (4) and the axle (2). Due to this arrangement the hydraulic motor (4) of the second steerable axle (2) may be approximately half the size of the hydraulic motor (3) of the constantly driven axle (1). The clutch (11) and the planetary transmission (12) are combined to form a compact constructional unit (26) which is flange-connected to the axle housing ( 27) of the second, steerable axle (2).

Abstract: Disclosed are method and fluid lift pump for raising liquids through a bundle of substantially vertical lift tubes adapted to raise liquids even while submerged less than 50% of total lift height, the tubes having about the same length extending side by side, each tube having an inside diameter of less than about one inch. The lift tubes communicate at the lower end with a housing defining a chamber capable of being filled with liquid to be raised, and the lower portion of the housing includes means for injecting a lifting fluid into the liquid in the chamber. The injecting means comprise an injecting orifice, having an inside diameter no larger than about the largest lift tube inside diameter, positioned below the lower ends of the lift tubes by a specified distance depending on the cross-sectional area of the bundle and the number of injecting orifices. Bubbles of lifting fluid rise through the liquid in the chamber, enter the lift tubes, and form rising slugs of liquid separated by slugs of lifting fluid.

Abstract: A universal disk drive system (30) incorporates multiple read/write heads (204) supported on a rotatable carousel assembly (180) for selective positioning and alignment relative to a flexible magnetic disk on a drive spindle (120). A disk is received and fed along an input path to the drive spindle (120) by feed rollers (36,38) driven in unison. A clamp cone assembly (90) is mounted for movement relative to the drive spindle (120) for clamping either one of two predetermined sizes of disks against the drive spindle with coaxial inner and outer clamp cones (102, 104). The carousel assembly (180) includes a spider (186) supported for rotation about an angled spindle support (158). A read/write head (204) is supported on each angled arm of the spider (186) for precise radial and pivotal alignment relative to the disk by means of a slidable carriage (220) and azimuth adjustment module (246). Rotation of the carousel assembly (180) is controlled by an index and locking assembly (320).

Abstract: Pump system, method and apparatus for detecting a well pump off condition and for operating a well with cycles of alternate short pumping operation and outgassing operation to substantially reduce well pump off.

Abstract: A wet motor gerotor fuel pump for pumping fuel from a fuel source to an internal combustion engine. The fuel pump includes a pump case having an inlet chamber, a motor chamber, and a pump chamber therebetween. An inlet housing provides appropriate fuel inlet to a gerotor pump in the pump chamber. An outlet housing receives the pressurized fuel and delivers the fuel to the internal combustion engine. An electric motor mounted in the motor chamber is adapted to pass the fuel therethrough such that the fuel is pumped substantially through the gerotor pump along a flow axis through the complete pump assembly to the internal combustion engine.

Abstract: A fan is disclosed that contains cut-outs that reduce the noise levels. The fan is used to cool circuit boards.

Abstract: The invention provides a pump regulation device. It is characterized in that the device (21) comprises: means for recording the real pressure (24) and a reference pressure, means, on the one hand for comparing the real pressure (24) in the organ and the reference pressure and, on the other hand, for emitting a signal proportional to the error, ports controlling the threshold of this error signal, an alarm controlled by the signal passing through at least one of said ports.

Abstract: 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 shifting of the plug, and a reciprocatory piston in the pump chamber, there being fluid communication between opposite ends of the pump chamber and the valve chamber on opposite sides of the valve plug, so that piston reciprocation in both directions moves fluid in the inlet connection and out the outlet connection upon shifting of the valve plug.

Abstract: Apparatus for removing manure from a manure pit or lagoon comprises an elongate screw-type auger having an inlet end which is inserted into the manure, and a suction hose from a vacuum wagon connected to the auger outlet. The combined action of the mechanical auger screw with the applied suction is effective in removing manure of widely varying liquid content from the pit or lagoon.

Abstract: An electromagnetic pump includes a coil bobbin with an excitation coil, a pair of magnetic cylinders, a printed circuit board with a transistor, and a pump housing. The coil bobbin is disposed around a sleeve member having a plunger therein. The pair of magnetic cylinders are axially inserted from two ends of the bobbin between the inner surface of the coil bobbin and the outer surface of the sleeve member. The pump housing consists of a cup-like housing body and a lid. The plunger, the magnetic cylinders and the pump housing are made of a magnetic material to form a magnetic flux path from the excitation coil.