| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 074061000 | Unbalanced weights | 21 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 20090151485 | METHOD AND SYSTEM FOR RETRACTING AN UNBALANCED MASS IN A VIBRATOR - A vibrator assembly ( | 06-18-2009 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
