Class / Patent application number | Description | Number of patent applications / Date published |
074061000 | Unbalanced weights | 29 |
20080257079 | INERTIAL PROPULSION DEVICE - The present invention relates to a propulsion device including a housing, a rotation drive unit provided with an unbalanced weight, a control reverse unit for controlling reverse of the unbalanced weight, and at least one gyroscope made as a high speed rotating cylindrical body. | 10-23-2008 |
20090151485 | METHOD AND SYSTEM FOR RETRACTING AN UNBALANCED MASS IN A VIBRATOR - A vibrator assembly ( | 06-18-2009 |
20090241704 | Vibration generator - A vibration generator has two groups of shafts, on which at least two groups of imbalances are disposed, and which are connected with at least one drive, by means of which they are put into rotation. The shaft groups are connected with the at least one drive in such a manner that the speed of rotation of one shaft group amounts to half the speed of rotation of the other shaft group, and the ratio of the static moments of the shaft groups provided with the imbalance groups amounts to between six to one and ten to one. | 10-01-2009 |
20100000351 | Vibration generator - A vibration generator has a piston guided in linear manner, which is connected with a crankshaft by way of a connecting rod. The piston is connected with the connecting rod by way of a piston pin bearing, and the crankshaft is connected with the connecting rod by way of a crank journal. The crank journal bearing is disposed within the piston pin bearing. | 01-07-2010 |
20100024578 | VIBRATOR WITH A VARIABLE MOMENT USING A PHASE SHIFTER WITH REDUCED CLEARANCES - A vibrator with a variable moment uses a phase shifter ( | 02-04-2010 |
20100107788 | Rotation drive - A tubular drive has a hollow shaft and at least one drive wheel mounted on the hollow shaft so as to rotate. The hollow shaft is rotatably mounted in a flange. An electric motor with an integrated generator is supplied for relative rotational adjustment of the drive wheel on the hollow shaft. A vibration exciter, particularly for a vibration pile driver, has at least two axles disposed parallel to one another, as well as at least two imbalance masses, which are attached on one or more of the axles. There is at least one such tubular drive for adjusting the relative rotation position of the imbalance masses with regard to one another. | 05-06-2010 |
20100139424 | VIBRATOR FOR A GROUND COMPACTING APPARATUS - A vibrator for a ground compaction apparatus includes two parallel shafts which are coupled to one another be rotatable in opposite directions and on each of which is at least one unbalanced mass is disposed. A phase adjusting mechanism is used for modifying the phase angle of the two unbalanced masses relative to each other. In order to do so, the actual phase angle of the two unbalanced masses is detected with the help of proximity sensors or the like. A regulating device compares the actual phase angle with a desired phase angle that is predefined by the operator and controls the phase adjusting mechanism in such a way that the difference between the actual phase angle and the desired phase angle is minimal. | 06-10-2010 |
20100147090 | Device for Generating a Circular Oscillation or a Directional Oscillation Having Continuously Adjustable Oscillation Amplitude and/or Exciter Force - A device for generating a circular oscillation or a directional oscillation is provided. The device provides a circular oscillation, or, if two parallel main shafts rotating synchronously in opposite directions are coupled, a directional oscillation, each main shaft having unbalance weights and a coupling between the unbalance weights and the oscillation amplitude of the exciter force per main shaft being continuously adjustable between a minimum value and a maximum value using an adjustment unit via the relative rotation of the unbalance weights toward or away from one another. The device includes unbalance weights that are mounted on the main shaft so they are rotatable thereon, and the coupling comprises a transmission medium connected rotationally fixed to the main shaft, which is composed so that it acts as a driver on the unbalance weights and also causes a pivoting of the unbalance weights in opposite directions upon the adjustment of the oscillation amplitude of the exciter force. | 06-17-2010 |
20100224016 | Device for a Vibration Generator - A device for a vibrator, including at least one resilient element, with a force/travel curve having a first region, at least approximately given by an equation of formula K=a+b*W, where K is the spring force of the at least one resilient element, W is the spring travel and a and b are number greater than zero and a vibrator including such a device. | 09-09-2010 |
20100242640 | Vibrator Assembly having a Cylindrical Unbalanced Counterweight - Disclosed is a vibrator assembly having a cylindrical counterweight with an unbalanced core. A conductive shield the length of the unbalanced rotatable counterweight is positioned about the length of the unbalanced rotatable counterweight, the conductive shield having a shield axis along the rotatable axis. The shield is a cylinder, a portion of a cylinder, or another form of a hollow structure. The shield can be, for example, welded, tightly fitted, or glued to the rotary vibrator assembly. In another embodiment, the conductive shield and unbalanced rotatable counterweight are a single component. In another embodiment, the assembly can include an end cap at a distal end of the shield. In still another embodiment, a circuit element can be electrically connected to the conductive shield. | 09-30-2010 |
20100326222 | Vibration exciter - A vibration exciter, particularly for a vibration pile driver, has an exciter transmission having at least two imbalance masses, which are attached on one or on multiple shafts, and a pivot motor for adjusting the relative rotational position of the imbalance masses relative to one another. A pump for supplying the pivot motor is provided, which pump is operated by way of a shaft of the exciter transmission. | 12-30-2010 |
20110041630 | PROPULSION MECHANISM EMPLOYING CONVERSION OF ROTARY MOTION INTO A UNIDIRECTIONAL LINEAR FORCE - A mechanism for converting rotary motion into a linear force employs a motor acting through a drive mechanism to rotate a pair of radial arms in counter-rotating directions, synchronously, about a central axis. A gear is rotatably supported about an axis normal to the plane of rotation of the arms, at the outer end of each arm. These two gears are weighted at points on their peripheries and the two gears are in mesh with identical, nonweighted fixed gears supported about the central axis, so that the weighted gears undergo one full rotation for each rotation of the arms. During each rotation of the arms, they experience two alignments, at two radially opposed positions. In one of the positions, the weighted segments are aligned so as to be positioned away from the central axis. At the other alignment position of the arms, the weighted segments are positioned close to the central axis. The unbalanced rotation of the arms and their weighted gears causes a centrifugal pulse in the direction of the most outward position of the rotating gears, moving the entire mechanism along a slide into abutment with a stop at one end of the mechanism to produce a net propulsive force. Rotation of the fixed gears 180 degrees reverses the thrust. | 02-24-2011 |
20110067509 | Compensation of Rotational Shaft Inclination - Bearing arrangement for a rotatable shaft comprising an inner bearing part for coupling to an end of the shaft, an outer bearing part for coupling to a mounting structure, and an axis of rotation, wherein at least one of the inner bearing part and the outer bearing part, at least in certain areas, possesses elastic deformability, at least in part, perpendicular to the axis of rotation, and an arrangement comprising the bearing arrangement and a shaft, as well as an oscillator comprising the latter. | 03-24-2011 |
20110214519 | FORCE CONVERTER - This invention relates to a new device that converts rotary motion to a unidirectional force by varying the speed of rotation of a plurality of masses that rotate in apposing directions around a common axes of rotation and are perpendicular to that axes. This invention also provides a means of support for said device. It also provides for a means of controlling the relative speed of the masses as they rotate in opposite directions. | 09-08-2011 |
20110290047 | Oscillating Device For Generating Seismic Loads And Compacting Soil - A mobile oscillator device that employs two counter-rotating masses that generate a large impact force at multiple frequencies without generating forces in other undesired directions. | 12-01-2011 |
20110290048 | Vibration Exciter For A Ground Compactor And Ground Compactor - A vibration exciter for a ground compactor comprises an exciter shaft having at least one exciter weight disposed thereon and having at least one turnover weight which is disposed so that it can rotate relative to this exciter shaft. The present invention further relates to a ground compactor having such a vibration exciter. | 12-01-2011 |
20110308337 | Centrifugal energy generator - Two machines, one linear type and one rotative type, rotate some eccentric masses to generate the centrifugal forces, then guide these centrifugal forces into a direction, linear or circular, to extract energy. | 12-22-2011 |
20120055276 | Infinitely Variable Vibration Exciter - A vibration exciter is provided. The vibration exciter includes a shaft and at least two unbalanced weights arranged on the shaft, in which the radial distance of the common center of gravity of the unbalanced weights from the rotational axis of the shaft is adjustable in an infinitely variable way by means of a gear. The vibration exciter comprises a gear which is a spatial coupling gear, e.g. a spatial vibration slider gear. A simple and compact configuration of the vibration exciter is thus proposed, in which the required adjusting forces for changing the imbalance are very low. | 03-08-2012 |
20120152043 | EASILY SWITCHABLE AUTOMATIC TRANSMISSION ECCENTRIC SHAFT - An easily switchable automatic transmission eccentric shaft includes an input shaft over which a movable centrifugal saddle is fit. An elastic body is arranged between the centrifugal saddle and the input shaft. The centrifugal saddle is provided at one side thereof with an openable weight assembly, which selectively moves the centrifugal saddle with respect to the input shaft. A balance weight is coupled to one side of the weight assembly. The balance weight forms a limiting structure that includes two retention members and an elastic element between the retention members. The limiting structure helps controlling preciseness of variable transmission, helps increasing available transmission positions, facilitates the weight assemblies returning back to home positions, and is suitable for high horsepower applications. | 06-21-2012 |
20130000429 | System and Method to Prevent Premature Wear on Key Shaft - A system and method for lubricating a key shaft in a compaction machine is disclosed. The compaction machine may include a spline oil cavity and a key shaft in fluid communication with the spline oil cavity. The key shaft may include an axial splined portion and a helical splined portion on an outer surface thereof, a longitudinal lubricating passage extending through a substantial length of the key shaft and a plurality of additional lubricating passages intersecting the longitudinal lubricating passage. The system and method may additionally include lubricating the axial splined portion and the helical splined portion of the key shaft with the lubricating oil drawn from the spline oil cavity. | 01-03-2013 |
20130025385 | VIBRATORY DRIVE - A vibratory drive of a vibrating roller includes an unbalanced-mass vibration generator configured to be used in at least one drum of the vibrating roller. The vibrating roller is operated by an external drive device or advancing device such that the unbalanced-mass vibration generator can be rotated relative to the drum in at least one direction. The unbalanced-mass vibration generator is mechanically coupled to a hydraulic motor, which is configured to be supplied with a pressure medium by a hydraulic pump to rotate the unbalanced-mass vibration generator. At least one high-pressure accumulator is provided to accommodate pressure medium pumped by the hydraulic motor in a pushing operation. The high-pressure accumulator feeds stored pressure medium to the hydraulic motor in a driving operation of the hydraulic motor. | 01-31-2013 |
20130047754 | MECHANICAL ADVANTAGE MACHINE - A mechanical advantage machine is provided. The mechanical advantage machine may comprise an elliptical track, a mobile weight, and a fulcrum point disposed at a vertex of the elliptical track. The mechanical advantage machine may further include at least one actuation rod coupled to at least one cam, wherein the traversal of the mobile weight about the circumference of the elliptical track causes the track to move causing the actuation rod to move which in turn causes the cam to rotate. A method for generating power may also be provided. The method may include mobilizing a weight about a circumference of an elliptical track comprising a fulcrum point disposed at a vertex of the circumference of the elliptical track, the mobilization pivoting the elliptical track in response to the weight traversing the elliptical track while at least one actuation rod causes the rotation of at least one cam. | 02-28-2013 |
20140245845 | BEARING COOLING SYSTEM FOR VIBRATORY DEVICES - An bearing cooling system is connected to and actuated by the vibration of a vibratory device to pump lubricant to lubricate internal components of the vibratory device. The bearing cooling system has a bottom end cap with an inlet in fluid communication with the vibratory device, a top end cap with an outlet for delivering the lubricant to lubricate components of the vibratory device, a tube disposed between and sealingly engaging the bottom end cap and the top end cap, and a piston having a lubricant passageway. The piston is slidably disposed within the tube downstream of the bottom end cap and upstream of the top end cap. Vibration of the vibration device causes the piston to oscillate within the tube to draw lubricant from the vibration device which passes through the lubricant passageway in the piston, and delivers lubricant to lubricate internal components of the vibration device. Upstream of the top end cap a heat exchanger and/or a filter can be used to cool and/or remove debris from the lubricant before lubricating the internal components. | 09-04-2014 |
20140305234 | VIBRATION EXCITER - A vibration exciter, particularly for a vibration pile driver, includes at least two shafts disposed parallel to one another, as well as at least two imbalance masses, which are attached on one or more of the shafts. A pivot motor provided for adjustment of the relative rotational position of the imbalance masses with regard to one another, includes a pivot motor shaft and a pivot motor housing. The pivot motor shaft is an integral part of one of the shafts, and the rotational position of the pivot motor housing relative to the pivot motor shaft can be changed. The pivot motor is disposed axially offset, in such a manner that it is disposed outside of the regions through which the imbalance masses move. | 10-16-2014 |
20140305235 | VIBRATION EXCITER FOR CONSTRUCTION MACHINES - A pivot motor, particularly for a vibration exciter for construction machines, has a pivot motor housing that is mounted so as to rotate on a pivot motor shaft. At least two pressure chambers to which a hydraulic oil is to be supplied are provided, by way of which oil the pivot motor can be driven. The pivot motor shaft is provided with an axial bore, into which a lance disposed in torque-proof manner projects, through which lance axially at least two channels for supplying oil to the pivot motor are passed, which end in ring grooves introduced on the outside of the lance, at least in certain regions, at a distance from one another. Radial bores for connecting the at least two ring grooves of the lance with the at least two pressure chambers are introduced into the pivot motor shaft. | 10-16-2014 |
20140305236 | VIBRATION EXCITER FOR CONSTRUCTION MACHINES - A vibration exciter for construction machines, particularly for vibration pile drivers, includes at least one axle having at least two imbalance masses. At least one rotary piston pivot motor is provided, by way of which the rotational position of at least one imbalance mass, relative to the at least one other imbalance mass, can be changed. The rotary piston pivot motor has a pivot motor housing that is mounted on a pivot motor shaft so as to rotate relative to it. At least one rotary vane is disposed on the pivot motor shaft, the angle of rotation of which vane is limited by at least one stop disposed on the pivot motor housing. The maximal angle of rotation of the at least one rotary vane amounts to less than 160 degrees, preferably 150 degrees or less. | 10-16-2014 |
20150352595 | Vibration Exciter for Steerable Soil Campacting Devices - A vibration exciter for a soil compacting device, comprising a first unbalanced shaft, a second unbalanced shaft, which is arranged axially parallel to the first unbalanced shaft and which is contra-directionally rotatably coupled to the first unbalanced shaft in a form-locked manner, and a drive device for rotatably driving one of the two unbalanced shafts. The second unbalanced shaft has a first unbalanced shaft half and a second unbalanced shaft half, which is arranged coaxially to the first unbalanced shaft half and which can rotate relative to the first unbalanced shaft half. At least one respective unbalanced mass is arranged on the first unbalanced shaft, on the first unbalanced shaft half, and on the second unbalanced shaft. | 12-10-2015 |
20150376845 | VIBRATION EXCITER FOR SOIL COMPACTING DEVICES - A vibration exciter for a soil compacting device includes a first unbalanced shaft on which at least one first unbalanced mass is arranged, a second unbalanced shaft which is arranged axially parallel to the first unbalanced shaft, which is contra-directionally rotatably coupled to the first unbalanced shaft in form-locked manner, and on which at least one second unbalanced mass is arranged, and a drive device for rotatably driving one of the unbalanced shafts and a rotation device. The drive device can be actuated by an actuation device in order to rotate the second unbalanced mass relative to the first unbalanced mass. The second unbalanced shaft has a cavity, and the actuation device is at least partially arranged inside the cavity. | 12-31-2015 |
20160067638 | VIBRATING DEVICE COMPRISING TWO CONCENTRIC ROTATING SHAFTS WITH RESPECTIVE ECCENTRIC MASSES, WHICH ROTATE IN OPPOSITE DIRECTIONS, AND A SUPPORTING STRUCTURE INCLUDING A BASE AND TWO INDEPENDENT LUBRICATED CAVITIES - The invention relates to a vibrating device ( | 03-10-2016 |