Abstract: A work machine includes a compactor drum, a controller, and an output device. The compactor drum includes a vibratory system, which includes at least one bearing that supports rotation of the vibratory system within the compactor drum, and lubricant received by the at least one bearing. The controller is configured to monitor at least one physical property of the vibratory system over a specified time and project a remaining useful life of the lubricant based on the at least one physical property. The output device is configured to generate an output indicative of the remaining useful life.

Abstract: A reversing mechanism for a pneumatically or hydraulically powered tool having a rotor adapted to rotate in either of first and second rotational directions. The reversing mechanism allows a user to actuate a button and rotate a valve to direct air flow through the tool. By pressing the button, the button will move a base laterally, and in doing so, rotates the valve. Rotating the valve then aligns a barrier of the valve in a direction tangential to the selected rotational direction of the tool, better directing forced air or fluid and more efficiently distributing the air or fluid in the selected rotational direction.

Abstract: A compaction machine includes a frame and a compactor drum. The compactor drum includes a vibratory system and a support structure. The vibratory system includes a vibratory mechanism coupled to the support structure. The vibratory mechanism includes a cavity having a radial outer wall. The radial outer wall is curved and is eccentric with respect to an axis of rotation of the vibratory system. Further, the radial outer wall extends around the axis of rotation. The vibratory mechanism also includes a non-fixed weight provided within the cavity. The non-fixed weight is adapted to move within the cavity. A movement of the non-fixed weight within the cavity generates multiple vibration amplitudes as the vibratory system rotates in a first direction and a second direction. The first direction is opposite to the second direction.

Abstract: A drive system, in particular for a self-propelled construction machine, especially a soil compactor, comprising a drive unit, at least one hydraulic circuit with a hydraulic pump drivable by the drive unit, as well as a hydraulic drive support unit with a hydraulic pump/motor assembly and at least one compressed fluid reservoir, wherein the hydraulic pump/motor assembly is, or can be, drivingly coupled to the drive unit and/or to at least one hydraulic circuit, wherein the hydraulic pump/motor assembly can be operated in a charging operating mode as a pump by means of the drive unit and/or by means of at least one hydraulic circuit for charging at least one compressed fluid reservoir, and which is drivable in a drive support state as a motor to provide a drive support torque for the hydraulic pump of at least one hydraulic circuit, is characterized in that a maximum drive torque provided by the drive unit is smaller than a maximum request torque to be applied for operating at least one hydraulic circuit.

Abstract: A system and method for controlling a mixing system at a peak energy efficiency point, maximum response point or reduced sound generation point based on displacement, velocity, acceleration or jerk operating conditions.

Abstract: An apparatus and method for mixing by producing shear and/or cavitation, and components for the apparatus are disclosed. In one embodiment, the apparatus includes a mixing and/or cavitation chamber with an element such as an orifice component that is located adjacent the entrance of the cavitation chamber. The apparatus may further include a blade, such as a knife-like blade, disposed inside the mixing and/or cavitation chamber opposite the orifice component. In one version of such an embodiment, at least some of the portions of the orifice component surrounding the orifice and/or the blade are made of a material or materials that have a Vickers hardness of greater than or equal to about 20 GPa. A process for mixing by producing shear and/or cavitation in a fluid is also contemplated herein.

Abstract: The invention provides an improved mixer section for a screw for a molding machine. The improved mixer section includes at least one conveying flight and at least one spill flight intersecting with the conveying flight. At least one notch is formed in the conveying flight to enable mixing between adjacent flow channels. The spill flight terminates near the output of the mixer to create a trap zone for any unmelts that reach that area of the mixer.

Abstract: An extrusion molding apparatus comprises a shaping die for producing a ceramic molded product, and a screw extruder having built therein an extruding screw (40) for mixing while leading a ceramic material forward. The extruding screw (40) includes a pressing screw portion (410) having a first lead (411) and a dispersing screw portion (420) having a second lead (421) adjacent to a forward end (412) of the pressing screw portion (410). The second lead (421) is formed in such a manner that the rear ends of all the second lead surfaces (426) at the rear end (422) of the dispersing screw portion (420) and the forward end of the first lead surface (416) at the forward end (412) of the pressing screw portion (410) are displaced from each other.

Abstract: The extruding apparatus has the molding die to form the ceramic molding, the screw extruder containing the extrusion screw to knead and guide the ceramic material toward the molding die. The extrusion screw is comprised of the pressure screw part and the diffusion screw part. The diffusion screw part provided at the front end of the extrusion screw has a diameter greater than the screw diameter of the pressure screw part.

Abstract: An apparatus for processing particulates comprises a vibratory bed including a motor with a vertically disposed shaft, separate remotely adjustable vibratory generating apparatus mounted on each end portion of the shaft and at least three contact structures between the vibratory bed and a flask or vessel containing the particulates. The uppermost vibratory generating apparatus being remotely adjustable to vary the horizontal vibratory force component and the lowermost vibratory generating apparatus being remotely adjustable to vary the vertical conical force component. The contact structures have conically shaped mating surfaces on pins and in recesses in sockets such that when at least one of the conically shaped surfaces are in contact the vessel is restrained to the same horizontal movement as the bed plate.

Abstract: A vibratory drum soil or asphalt compactor has a variable vibratory mechanism selectively operable to vary the vibrations imparted to the drum from a balanced mode to a maximum amplitude vibratory mode independently of the vibratory mechanism shaft rotation. A shaft having a shaft chamber for accommodating fluid is rotatably mounted on the drum. The shaft is equipped with a cylinder having a cylinder chamber connected with a passage to the shaft chamber. A piston closing the cylinder chamber and slidably mounted on the cylinder supports an eccentric weight. A control piston located with the shaft chamber operated by an external linear actuator is operable to move the piston away from the cylinder thereby move the weight into engagement with the shaft to balance the shaft and allow the weight to move away from the shaft to produce maximum vibration upon rotation of the shaft.

Abstract: A rotary air roller vibrator is depicted in which a housing has a cylindrical bore closed by two inner end plates which form a chamber. An axial shaft is fixed between these end plates and has a longitudinally disposed slot within which is slideably mounted a vane having a plurality of formed side-opening slots that are opened when the vane is lifted under the influence of pressurized air. A cylindrical rotor having an inner diameter greater than the diameter of the shaft is also sized so that the outer diameter is carried on two races pressed into place at the ends of the housing. These races are sized to prevent the rotor from striking the shaft. Each of these end plates has outer exhaust apertures arrayed in a three-quarter circle pattern and in secured position these apertures are aligned.

Abstract: An oscillator or vibration exciter for soil or road tampers or compacting devices. Unbalanced shafts are journalled parallel to each other in a common housing, and are driven in opposite directions by gears which mesh with each other and are installed on the unbalanced shafts. Each shaft supports a centrifugal weight rigidly coupled therewith. One gear is rigidly connected with its unbalanced shaft, while the other gear is rotatably arranged on its unbalanced shaft and is coupled therewith in such a way that it can be shifted in the direction of rotation by shift pins, which are anchored in a slide piece which can be axially shifted in this unbalanced shaft. The shift pins project outwardly through a longitudinal slot in the unbalanced shaft. This other rotatable gear, on both sides, has stop faces which extend nearly radially as well as axially, and point in the same rotational direction. A shift pin is provided on each side of this gear, one end of each shift pin projecting from the unbalanced shaft.

Abstract: A streaming vibrator with an uninterrupted rolling area and an unloaded blade. The vibrator has a housing with a cylindrical cavity defined therein. End plates laterally limit the cavity and support a central pipe having a periphery coaxial with a rolling area defined by the wall of the cylindrical cavity. A bore of the pipe is connectable to a source of pressurized fluid, and the pipe has an opening positioned between the end plates to provide communication between the bore and the cylindrical cavity. A freely rotatable scutching member formed as a hollow cylinder is positioned in the space between the central pipe and the rolling area. A blade extends through the opening in the pipe into contact with an interior wall of the scutching member to divide the cavity into two components. A plurality of channels are formed in the blade and oriented away from outlet openings formed in the end plates.

Abstract: Vibrator devices, of the type which produce a vibratory effect as a result of rotation of an out-of-balance mass, comprise a casing and a rotor which has a fluid-containing cavity with the contained body of fluid contacting a swept annular surface of the casing. A piston movable radially in the rotor and/or the body of fluid provides the out-of-balance mass and the vibratory force is transmitted to the casing directly by the fluid pressure on the swept annular surface thereof. The rotor structure is mechanically balanced so that substantially no vibratory force is transmitted through the rotor shaft and bearings.

Abstract: In a preferred embodiment of the invention, a dental scaler for the cleaning of teeth in which the scraper is an air-driven vibrator having a scraper mounted on a distal end of a rigid tubular device, with the rigid tubular device being mounted within a resilient support permissive of vibrations of the rigid tubular device and the vibrations of the tubular device being brought about by the exiting of air onto an air-cushioned rotary wheel mounted around the tubular device rotatably, the rotation thereof resulting from the force of the air from preferably a plurality of ports permitting the air to exit from the ports against the inner surface of the air rotary wheel, and the rotation of the rotary wheel bringing about the vibrations which are imparted to the rigid shaft, while the firmly supported tubular shaft within the resilient support structure thereof itself amplifies the magnitude of the vibrations by itself vibrating and transmitting its vibrations back to the rotary wheel, the outlet ports from the tu